// Purpose: interface of wxWindow
// Author: wxWidgets team
// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/**
- Background styles. See wxWindow::SetBackgroundStyle().
-*/
-enum wxBackgroundStyle
-{
- /// Use the default background, as determined by
- /// the system or the current theme.
- wxBG_STYLE_SYSTEM,
-
- /// Use a solid colour for the background, this style is set automatically if you call
- /// SetBackgroundColour() so you only need to set it explicitly if you had
- /// changed the background style to something else before.
- wxBG_STYLE_COLOUR,
-
- /// Don't draw the background at all, it's supposed that it is drawn by
- /// the user-defined erase background event handler.
- /// This style should be used to avoid flicker when the background is entirely
- /// custom-drawn.
- wxBG_STYLE_CUSTOM,
-
- /// The background is (partially) transparent,this style is automatically set if you call
- /// SetTransparent() which is used to set the transparency level.
- wxBG_STYLE_TRANSPARENT
-};
-
-
/**
Valid values for wxWindow::ShowWithEffect() and wxWindow::HideWithEffect().
*/
enum wxShowEffect
{
+ /**
+ No effect, equivalent to normal wxWindow::Show() or Hide() call.
+
+ @since 2.9.1
+ */
+ wxSHOW_EFFECT_NONE,
+
/// Roll window to the left
wxSHOW_EFFECT_ROLL_TO_LEFT,
wxSHOW_EFFECT_BLEND,
/// Expanding or collapsing effect
- wxSHOW_EFFECT_EXPAND
+ wxSHOW_EFFECT_EXPAND,
+
+ wxSHOW_EFFECT_MAX
+};
+
+
+/**
+ flags for SendSizeEvent()
+*/
+enum
+{
+ wxSEND_EVENT_POST = 1
+};
+
+
+
+
+/**
+ Struct containing all the visual attributes of a control.
+*/
+struct wxVisualAttributes
+{
+ /// The font used for control label/text inside it.
+ wxFont font;
+
+ /// The foreground colour.
+ wxColour colFg;
+
+ /**
+ The background colour.
+
+ May be wxNullColour if the controls background colour is not solid.
+ */
+ wxColour colBg;
};
+
/**
Different window variants, on platforms like eg mac uses different
rendering sizes.
};
-/**
- Flags which can be used in wxWindow::UpdateWindowUI().
-*/
-enum wxUpdateUI
-{
- wxUPDATE_UI_NONE,
- wxUPDATE_UI_RECURSE,
- wxUPDATE_UI_FROMIDLE /**< Invoked from On(Internal)Idle */
-};
-
-
/**
@class wxWindow
wxWindow is the base class for all windows and represents any visible object
- om screen. All controls, top level windows and so on are windows. Sizers and
+ on screen. All controls, top level windows and so on are windows. Sizers and
device contexts are not, however, as they don't appear on screen themselves.
Please note that all children of the window will be deleted automatically by
@beginExtraStyleTable
@style{wxWS_EX_VALIDATE_RECURSIVELY}
- By default, Validate/TransferDataTo/FromWindow() only work on
- direct children of the window (compatible behaviour). Set this flag
- to make them recursively descend into all subwindows.
+ By default, wxWindow::Validate(), wxWindow::TransferDataTo() and
+ wxWindow::TransferDataFromWindow() only work on
+ direct children of the window (compatible behaviour).
+ Set this flag to make them recursively descend into all subwindows.
@style{wxWS_EX_BLOCK_EVENTS}
wxCommandEvents and the objects of the derived classes are
forwarded to the parent window and so on recursively by default.
Using this flag for the given window allows to block this
propagation at this window, i.e. prevent the events from being
propagated further upwards. Dialogs have this flag on by default
- for the reasons explained in the @ref overview_eventhandling "Event Handling Overview".
+ for the reasons explained in the @ref overview_events.
@style{wxWS_EX_TRANSIENT}
Don't use this window as an implicit parent for the other windows:
this must be used with transient windows as otherwise there is the
- risk of creating a dialog/frame with this window as a parent which
- would lead to a crash if the parent is destroyed before the child.
+ risk of creating a dialog/frame with this window as a parent, which
+ would lead to a crash if the parent were destroyed before the child.
@style{wxWS_EX_CONTEXTHELP}
Under Windows, puts a query button on the caption. When pressed,
Windows will go into a context-sensitive help mode and wxWidgets
- will send a wxEVT_HELP event if the user clicked on an application window.
- This style cannot be used together with wxMAXIMIZE_BOX or wxMINIMIZE_BOX, so
- these two styles are automatically turned of if this one is used.
+ will send a @c wxEVT_HELP event if the user clicked on an application window.
+ This style cannot be used (because of the underlying native behaviour)
+ together with @c wxMAXIMIZE_BOX or @c wxMINIMIZE_BOX, so these two styles
+ are automatically turned off if this one is used.
@style{wxWS_EX_PROCESS_IDLE}
This window should always process idle events, even if the mode set
- by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
+ by wxIdleEvent::SetMode is @c wxIDLE_PROCESS_SPECIFIED.
@style{wxWS_EX_PROCESS_UI_UPDATES}
This window should always process UI update events, even if the
- mode set by wxUpdateUIEvent::SetMode is wxUPDATE_UI_PROCESS_SPECIFIED.
+ mode set by wxUpdateUIEvent::SetMode is @c wxUPDATE_UI_PROCESS_SPECIFIED.
@endExtraStyleTable
+ @beginEventEmissionTable
+ @event{EVT_ACTIVATE(id, func)}
+ Process a @c wxEVT_ACTIVATE event. See wxActivateEvent.
+ @event{EVT_CHILD_FOCUS(func)}
+ Process a @c wxEVT_CHILD_FOCUS event. See wxChildFocusEvent.
+ @event{EVT_CONTEXT_MENU(func)}
+ A right click (or other context menu command depending on platform) has been detected.
+ See wxContextMenuEvent.
+ @event{EVT_HELP(id, func)}
+ Process a @c wxEVT_HELP event. See wxHelpEvent.
+ @event{EVT_HELP_RANGE(id1, id2, func)}
+ Process a @c wxEVT_HELP event for a range of ids. See wxHelpEvent.
+ @event{EVT_DROP_FILES(func)}
+ Process a @c wxEVT_DROP_FILES event. See wxDropFilesEvent.
+ @event{EVT_ERASE_BACKGROUND(func)}
+ Process a @c wxEVT_ERASE_BACKGROUND event. See wxEraseEvent.
+ @event{EVT_SET_FOCUS(func)}
+ Process a @c wxEVT_SET_FOCUS event. See wxFocusEvent.
+ @event{EVT_KILL_FOCUS(func)}
+ Process a @c wxEVT_KILL_FOCUS event. See wxFocusEvent.
+ @event{EVT_IDLE(func)}
+ Process a @c wxEVT_IDLE event. See wxIdleEvent.
+ @event{EVT_JOY_*(func)}
+ Processes joystick events. See wxJoystickEvent.
+ @event{EVT_KEY_DOWN(func)}
+ Process a @c wxEVT_KEY_DOWN event (any key has been pressed).
+ See wxKeyEvent.
+ @event{EVT_KEY_UP(func)}
+ Process a @c wxEVT_KEY_UP event (any key has been released).
+ See wxKeyEvent.
+ @event{EVT_CHAR(func)}
+ Process a @c wxEVT_CHAR event.
+ See wxKeyEvent.
+ @event{EVT_CHAR_HOOK(func)}
+ Process a @c wxEVT_CHAR_HOOK event.
+ See wxKeyEvent.
+ @event{EVT_MOUSE_CAPTURE_LOST(func)}
+ Process a @c wxEVT_MOUSE_CAPTURE_LOST event. See wxMouseCaptureLostEvent.
+ @event{EVT_MOUSE_CAPTURE_CHANGED(func)}
+ Process a @c wxEVT_MOUSE_CAPTURE_CHANGED event. See wxMouseCaptureChangedEvent.
+ @event{EVT_MOUSE_*(func)}
+ See wxMouseEvent.
+ @event{EVT_PAINT(func)}
+ Process a @c wxEVT_PAINT event. See wxPaintEvent.
+ @event{EVT_POWER_*(func)}
+ The system power state changed. See wxPowerEvent.
+ @event{EVT_SCROLLWIN_*(func)}
+ Process scroll events. See wxScrollWinEvent.
+ @event{EVT_SET_CURSOR(func)}
+ Process a @c wxEVT_SET_CURSOR event. See wxSetCursorEvent.
+ @event{EVT_SIZE(func)}
+ Process a @c wxEVT_SIZE event. See wxSizeEvent.
+ @event{EVT_SYS_COLOUR_CHANGED(func)}
+ Process a @c wxEVT_SYS_COLOUR_CHANGED event. See wxSysColourChangedEvent.
+ @endEventTable
+
@library{wxcore}
@category{miscwnd}
- @see @ref overview_eventhandling "Event handling overview",
- @ref overview_windowsizing "Window sizing overview"
+ @see @ref overview_events, @ref overview_windowsizing
*/
class wxWindow : public wxEvtHandler
{
@see @ref overview_windowdeletion "Window Deletion Overview",
Destroy(), wxCloseEvent
*/
- ~wxWindow();
+ virtual ~wxWindow();
+
+
+ bool Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos = wxDefaultPosition,
+ const wxSize& size = wxDefaultSize,
+ long style = 0,
+ const wxString& name = wxPanelNameStr);
+
+ /**
+ @name Focus functions
+
+ See also the static function FindFocus().
+ */
+ //@{
/**
This method may be overridden in the derived classes to return @false to
- indicate that this control doesn't accept input at all (i.e. behaves like
- e.g. wxStaticText) and so doesn't need focus.
+ indicate that this control doesn't accept input at all (i.e.\ behaves like
+ e.g.\ wxStaticText) and so doesn't need focus.
@see AcceptsFocusFromKeyboard()
*/
virtual bool AcceptsFocusFromKeyboard() const;
/**
- Overridden to indicate wehter this window or one of its children accepts
+ Overridden to indicate whether this window or one of its children accepts
focus. Usually it's the same as AcceptsFocus() but is overridden for
container windows.
*/
virtual bool AcceptsFocusRecursively() const;
+
+ /**
+ Can this window itself have focus?
+ */
+ bool IsFocusable() const;
/**
- Adds a child window. This is called automatically by window creation
- functions so should not be required by the application programmer.
- Notice that this function is mostly internal to wxWidgets and shouldn't be
- called by the user code.
+ Can this window have focus right now?
+
+ If this method returns true, it means that calling SetFocus() will
+ put focus either to this window or one of its children, if you need
+ to know whether this window accepts focus itself, use IsFocusable()
+ */
+ bool CanAcceptFocus() const;
- @param child
- Child window to add.
+ /**
+ Can this window be assigned focus from keyboard right now?
*/
- virtual void AddChild(wxWindow* child);
+ bool CanAcceptFocusFromKeyboard() const;
+
/**
- Call this function to force one or both scrollbars to be always shown, even if
- the window is big enough to show its entire contents without scrolling.
+ Returns @true if the window (or in case of composite controls, its main
+ child window) has focus.
@since 2.9.0
- @param hflag
- Whether the horizontal scroll bar should always be visible.
- @param vflag
- Whether the vertical scroll bar should always be visible.
-
- @remarks This function is currently only implemented under Mac/Carbon.
+ @see FindFocus()
*/
- void AlwaysShowScrollbars(bool hflag, bool vflag);
+ virtual bool HasFocus() const;
/**
- Sets the cached best size value.
+ This method is only implemented by ports which have support for
+ native TAB traversal (such as GTK+ 2.0).
+
+ It is called by wxWidgets' container control code to give the native
+ system a hint when doing TAB traversal. A call to this does not disable
+ or change the effect of programmatically calling SetFocus().
+
+ @see wxFocusEvent, wxPanel::SetFocus, wxPanel::SetFocusIgnoringChildren
*/
- void CacheBestSize(const wxSize& size) const;
+ virtual void SetCanFocus(bool canFocus);
/**
- Returns @true if the system supports transparent windows and calling
- SetTransparent() may succeed. If this function returns @false, transparent
- windows are definitely not supported by the current system.
+ This sets the window to receive keyboard input.
+
+ @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
+ wxPanel::SetFocusIgnoringChildren
*/
- bool CanSetTransparent();
+ virtual void SetFocus();
/**
- Directs all mouse input to this window.
- Call ReleaseMouse() to release the capture.
+ This function is called by wxWidgets keyboard navigation code when the user
+ gives the focus to this window from keyboard (e.g. using @c TAB key).
- Note that wxWidgets maintains the stack of windows having captured the mouse
- and when the mouse is released the capture returns to the window which had had
- captured it previously and it is only really released if there were no previous
- window. In particular, this means that you must release the mouse as many times
- as you capture it, unless the window receives the wxMouseCaptureLostEvent event.
+ By default this method simply calls SetFocus() but
+ can be overridden to do something in addition to this in the derived classes.
+ */
+ virtual void SetFocusFromKbd();
- Any application which captures the mouse in the beginning of some operation
- must handle wxMouseCaptureLostEvent and cancel this operation when it receives
- the event. The event handler must not recapture mouse.
+ //@}
- @see ReleaseMouse(), wxMouseCaptureLostEvent
- */
- virtual void CaptureMouse();
/**
- A synonym for Centre().
+ @name Child management functions
*/
- void Center(int direction);
+ //@{
/**
- A synonym for CentreOnParent().
+ Adds a child window. This is called automatically by window creation
+ functions so should not be required by the application programmer.
+ Notice that this function is mostly internal to wxWidgets and shouldn't be
+ called by the user code.
+
+ @param child
+ Child window to add.
*/
- void CenterOnParent(int direction);
+ virtual void AddChild(wxWindow* child);
/**
- Centres the window.
-
- @param direction
- Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
- or wxBOTH. It may also include wxCENTRE_ON_SCREEN flag
- if you want to center the window on the entire screen and not on its
- parent window.
-
- @remarks If the window is a top level one (i.e. doesn't have a parent),
- it will be centered relative to the screen anyhow.
-
- @see Center()
+ Destroys all children of a window. Called automatically by the destructor.
*/
- void Centre(int direction = wxBOTH);
+ bool DestroyChildren();
/**
- Centres the window on its parent. This is a more readable synonym for Centre().
-
- @param direction
- Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
- or wxBOTH.
+ Find a child of this window, by @a id.
+ May return @a this if it matches itself.
+ */
+ wxWindow* FindWindow(long id) const;
- @remarks This methods provides for a way to center top level windows over
- their parents instead of the entire screen. If there
- is no parent or if the window is not a top level
- window, then behaviour is the same as Centre().
+ /**
+ Find a child of this window, by name.
+ May return @a this if it matches itself.
+ */
+ wxWindow* FindWindow(const wxString& name) const;
- @see wxTopLevelWindow::CentreOnScreen
+ /**
+ Returns a reference to the list of the window's children. @c wxWindowList
+ is a type-safe wxList-like class whose elements are of type @c wxWindow*.
*/
- void CentreOnParent(int direction = wxBOTH);
+ wxWindowList& GetChildren();
/**
- Clears the window by filling it with the current background colour. Does not
- cause an erase background event to be generated.
+ @overload
*/
- void ClearBackground();
+ const wxWindowList& GetChildren() const;
- //@{
/**
- Converts to screen coordinates from coordinates relative to this window.
+ Removes a child window.
- @param x
- A pointer to a integer value for the x coordinate. Pass the client
- coordinate in, and a screen coordinate will be passed out.
- @param y
- A pointer to a integer value for the y coordinate. Pass the client
- coordinate in, and a screen coordinate will be passed out.
- @param pt
- The client position for the second form of the function.
+ This is called automatically by window deletion functions so should not
+ be required by the application programmer.
+ Notice that this function is mostly internal to wxWidgets and shouldn't be
+ called by the user code.
- @beginWxPythonOnly
- In place of a single overloaded method name, wxPython implements the following methods:
- - ClientToScreen(point): Accepts and returns a wxPoint
- - ClientToScreenXY(x, y): Returns a 2-tuple, (x, y)
- @endWxPythonOnly
+ @param child
+ Child window to remove.
*/
- void ClientToScreen(int* x, int* y) const;
- wxPoint ClientToScreen(const wxPoint& pt) const;
+ virtual void RemoveChild(wxWindow* child);
+
//@}
+
/**
- Converts client area size @a size to corresponding window size.
+ @name Sibling and parent management functions
+ */
+ //@{
- In other words, the returned value is what would GetSize() return if this
- window had client area of given size. Components with wxDefaultCoord
- value are left unchanged. Note that the conversion is not always
- exact, it assumes that non-client area doesn't change and so doesn't
- take into account things like menu bar (un)wrapping or (dis)appearance
- of the scrollbars.
+ /**
+ Returns the grandparent of a window, or @NULL if there isn't one.
+ */
+ wxWindow* GetGrandParent() const;
+
+ /**
+ Returns the next window after this one among the parent's children or @NULL
+ if this window is the last child.
@since 2.8.8
- @see WindowToClientSize()
+ @see GetPrevSibling()
*/
- virtual wxSize ClientToWindowSize(const wxSize& size);
+ wxWindow* GetNextSibling() const;
/**
- Converts window size @a size to corresponding client area size
- In other words, the returned value is what would GetClientSize() return if
- this window had given window size. Components with wxDefaultCoord value
- are left unchanged.
+ Returns the parent of the window, or @NULL if there is no parent.
+ */
+ wxWindow* GetParent() const;
- Note that the conversion is not always exact, it assumes that
- non-client area doesn't change and so doesn't take into account things
- like menu bar (un)wrapping or (dis)appearance of the scrollbars.
+ /**
+ Returns the previous window before this one among the parent's children or @c
+ @NULL if this window is the first child.
@since 2.8.8
- @see ClientToWindowSize()
+ @see GetNextSibling()
*/
- virtual wxSize WindowToClientSize(const wxSize& size);
+ wxWindow* GetPrevSibling() const;
/**
- This function simply generates a wxCloseEvent whose handler usually tries
- to close the window. It doesn't close the window itself, however.
+ Check if the specified window is a descendant of this one.
- @param force
- @false if the window's close handler should be able to veto the destruction
- of this window, @true if it cannot.
+ Returns @true if the window is a descendant (i.e. a child or
+ grand-child or grand-grand-child or ...) of this one.
- @remarks Close calls the close handler for the window, providing an
- opportunity for the window to choose whether to destroy
- the window. Usually it is only used with the top level
- windows (wxFrame and wxDialog classes) as the others
- are not supposed to have any special OnClose() logic.
- The close handler should check whether the window is being deleted
- forcibly, using wxCloseEvent::CanVeto, in which case it should
- destroy the window using wxWindow::Destroy.
- Note that calling Close does not guarantee that the window will
- be destroyed; but it provides a way to simulate a manual close
- of a window, which may or may not be implemented by destroying
- the window. The default implementation of wxDialog::OnCloseWindow
- does not necessarily delete the dialog, since it will simply
- simulate an wxID_CANCEL event which is handled by the appropriate
- button event handler and may do anything at all.
- To guarantee that the window will be destroyed, call
- wxWindow::Destroy instead
+ Notice that a window can never be a descendant of another one if they
+ are in different top level windows, i.e. a child of a wxDialog is not
+ considered to be a descendant of dialogs parent wxFrame.
- @see @ref overview_windowdeletion "Window Deletion Overview",
- Destroy(), wxCloseEvent
- */
- bool Close(bool force = false);
+ @param win Any window, possible @NULL (@false is always returned then).
- //@{
- /**
- Converts a point or size from dialog units to pixels.
+ @since 2.9.4
+ */
+ bool IsDescendant(wxWindowBase* win) const;
- For the x dimension, the dialog units are multiplied by the average character
- width and then divided by 4.
- For the y dimension, the dialog units are multiplied by the average character
- height and then divided by 8.
+ /**
+ Reparents the window, i.e.\ the window will be removed from its
+ current parent window (e.g. a non-standard toolbar in a wxFrame)
+ and then re-inserted into another.
- @remarks Dialog units are used for maintaining a dialog's proportions
- even if the font changes.
- You can also use these functions programmatically.
- A convenience macro is defined:
- @code
- #define wxDLG_UNIT(parent, pt) parent->ConvertDialogToPixels(pt)
- @endcode
+ Notice that currently you need to explicitly call
+ wxNotebook::RemovePage() before reparenting a notebook page.
- @see ConvertPixelsToDialog()
+ @param newParent
+ New parent.
*/
- wxPoint ConvertDialogToPixels(const wxPoint& pt);
- wxSize ConvertDialogToPixels(const wxSize& sz);
+ virtual bool Reparent(wxWindow* newParent);
+
//@}
- //@{
+
/**
- Converts a point or size from pixels to dialog units.
+ @name Scrolling and scrollbars functions
- For the x dimension, the pixels are multiplied by 4 and then divided by the
- average character width.
- For the y dimension, the pixels are multiplied by 8 and then divided by the
- average character height.
+ Note that these methods don't work with native controls which don't use
+ wxWidgets scrolling framework (i.e. don't derive from wxScrolledWindow).
+ */
+ //@{
- @remarks Dialog units are used for maintaining a dialog's proportions
- even if the font changes.
+ /**
+ Call this function to force one or both scrollbars to be always shown, even if
+ the window is big enough to show its entire contents without scrolling.
- @see ConvertDialogToPixels()
+ @since 2.9.0
+
+ @param hflag
+ Whether the horizontal scroll bar should always be visible.
+ @param vflag
+ Whether the vertical scroll bar should always be visible.
+
+ @remarks This function is currently only implemented under Mac/Carbon.
*/
- wxPoint ConvertPixelsToDialog(const wxPoint& pt);
- wxSize ConvertPixelsToDialog(const wxSize& sz);
- //@}
+ virtual void AlwaysShowScrollbars(bool hflag = true, bool vflag = true);
/**
- Destroys the window safely. Use this function instead of the delete operator,
- since different window classes can be destroyed differently. Frames and dialogs
- are not destroyed immediately when this function is called -- they are added
- to a list of windows to be deleted on idle time, when all the window's events
- have been processed. This prevents problems with events being sent to
- non-existent windows.
+ Returns the built-in scrollbar position.
- @return @true if the window has either been successfully deleted, or it
- has been added to the list of windows pending real deletion.
+ @see SetScrollbar()
*/
- virtual bool Destroy();
+ virtual int GetScrollPos(int orientation) const;
/**
- Destroys all children of a window. Called automatically by the destructor.
+ Returns the built-in scrollbar range.
+
+ @see SetScrollbar()
*/
- virtual void DestroyChildren();
+ virtual int GetScrollRange(int orientation) const;
/**
- Returns true if this window is in process of being destroyed.
-
- The top level windows are not deleted immediately but are rather
- scheduled for later destruction to give them time to process any
- pending messages, see Destroy() description.
+ Returns the built-in scrollbar thumb size.
- This function returns @true if this window, or one of its parent
- windows, is scheduled for destruction and can be useful to avoid
- manipulating it as it's usually useless to do something with a window
- which is on the point of disappearing anyhow.
- */
- bool IsBeingDeleted() const;
+ @see SetScrollbar()
+ */
+ virtual int GetScrollThumb(int orientation) const;
/**
- Disables the window. Same as @ref Enable() Enable(@false).
+ Returns @true if this window can have a scroll bar in this orientation.
- @return Returns @true if the window has been disabled, @false if it had
- been already disabled before the call to this function.
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+
+ @since 2.9.1
*/
- bool Disable();
+ bool CanScroll(int orient) const;
/**
- Gets the size which best suits the window: for a control, it would be
- the minimal size which doesn't truncate the control, for a panel - the
- same size as it would have after a call to Fit().
+ Returns @true if this window currently has a scroll bar for this
+ orientation.
- The default implementation of this function is designed for use in container
- windows, such as wxPanel, and works something like this:
- -# If the window has a sizer then it is used to calculate the best size.
- -# Otherwise if the window has layout constraints then those are used to
- calculate the best size.
- -# Otherwise if the window has children then the best size is set to be large
- enough to show all the children.
- -# Otherwise if there are no children then the window's minimal size will be
- used as its best size.
- -# Otherwise if there is no minimal size set, then the current size is used
- for the best size.
+ This method may return @false even when CanScroll() for the same
+ orientation returns @true, but if CanScroll() returns @false, i.e.
+ scrolling in this direction is not enabled at all, HasScrollbar()
+ always returns @false as well.
- @see @ref overview_windowsizing
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
*/
- virtual wxSize DoGetBestSize() const;
+ bool HasScrollbar(int orient) const;
/**
- Does the window-specific updating after processing the update event.
- This function is called by UpdateWindowUI() in order to check return
- values in the wxUpdateUIEvent and act appropriately.
- For example, to allow frame and dialog title updating, wxWidgets
- implements this function as follows:
+ Return whether a scrollbar is always shown.
- @code
- // do the window-specific processing after processing the update event
- void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
- {
- if ( event.GetSetEnabled() )
- Enable(event.GetEnabled());
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
- if ( event.GetSetText() )
- {
- if ( event.GetText() != GetTitle() )
- SetTitle(event.GetText());
- }
- }
- @endcode
+ @see AlwaysShowScrollbars()
*/
- virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
+ virtual bool IsScrollbarAlwaysShown(int orient) const;
/**
- Enables or disables eligibility for drop file events (OnDropFiles).
+ Scrolls the window by the given number of lines down (if @a lines is
+ positive) or up.
- @param accept
- If @true, the window is eligible for drop file events.
- If @false, the window will not accept drop file events.
+ @return Returns @true if the window was scrolled, @false if it was already
+ on top/bottom and nothing was done.
+
+ @remarks This function is currently only implemented under MSW and
+ wxTextCtrl under wxGTK (it also works for wxScrolled classes
+ under all platforms).
- @remarks Windows only.
+ @see ScrollPages()
*/
- virtual void DragAcceptFiles(bool accept);
+ virtual bool ScrollLines(int lines);
/**
- Enable or disable the window for user input. Note that when a parent window is
- disabled, all of its children are disabled as well and they are reenabled again
- when the parent is.
+ Scrolls the window by the given number of pages down (if @a pages is
+ positive) or up.
- @param enable
- If @true, enables the window for input. If @false, disables the window.
+ @return Returns @true if the window was scrolled, @false if it was already
+ on top/bottom and nothing was done.
- @return Returns @true if the window has been enabled or disabled, @false
- if nothing was done, i.e. if the window had already
- been in the specified state.
+ @remarks This function is currently only implemented under MSW and wxGTK.
- @see IsEnabled(), Disable(), wxRadioBox::Enable
+ @see ScrollLines()
*/
- virtual bool Enable(bool enable = true);
+ virtual bool ScrollPages(int pages);
/**
- Finds the window or control which currently has the keyboard focus.
+ Physically scrolls the pixels in the window and move child windows accordingly.
- @remarks Note that this is a static function, so it can be called without
- needing a wxWindow pointer.
+ @param dx
+ Amount to scroll horizontally.
+ @param dy
+ Amount to scroll vertically.
+ @param rect
+ Rectangle to scroll, if it is @NULL, the whole window is
+ scrolled (this is always the case under wxGTK which doesn't support this
+ parameter)
- @see SetFocus(), HasFocus()
+ @remarks Note that you can often use wxScrolled instead of using this
+ function directly.
*/
- static wxWindow* FindFocus();
+ virtual void ScrollWindow(int dx, int dy,
+ const wxRect* rect = NULL);
/**
- Find a child of this window, by @a id.
- May return @a this if it matches itself.
+ Same as #ScrollLines (-1).
*/
- wxWindow* FindWindow(long id) const;
+ bool LineUp();
/**
- Find a child of this window, by name.
- May return @a this if it matches itself.
+ Same as #ScrollLines (1).
*/
- wxWindow* FindWindow(const wxString& name) const;
+ bool LineDown();
/**
- Find the first window with the given @e id.
-
- If @a parent is @NULL, the search will start from all top-level frames
- and dialog boxes; if non-@NULL, the search will be limited to the given
- window hierarchy.
- The search is recursive in both cases.
-
- @see FindWindow()
+ Same as #ScrollPages (-1).
*/
- static wxWindow* FindWindowById(long id, wxWindow* parent = NULL);
+ bool PageUp();
/**
- Find a window by its label.
-
- Depending on the type of window, the label may be a window title
- or panel item label. If @a parent is @NULL, the search will start from all
- top-level frames and dialog boxes; if non-@NULL, the search will be
- limited to the given window hierarchy.
- The search is recursive in both cases.
-
- @see FindWindow()
+ Same as #ScrollPages (1).
*/
- static wxWindow* FindWindowByLabel(const wxString& label,
- wxWindow* parent = NULL);
+ bool PageDown();
/**
- Find a window by its name (as given in a window constructor or @b Create
- function call).
+ Sets the position of one of the built-in scrollbars.
- If @a parent is @NULL, the search will start from all top-level frames
- and dialog boxes; if non-@NULL, the search will be limited to the given
- window hierarchy.
+ @param orientation
+ Determines the scrollbar whose position is to be set.
+ May be wxHORIZONTAL or wxVERTICAL.
+ @param pos
+ Position in scroll units.
+ @param refresh
+ @true to redraw the scrollbar, @false otherwise.
- The search is recursive in both cases. If no window with such name is found,
- FindWindowByLabel() is called.
+ @remarks This function does not directly affect the contents of the
+ window: it is up to the application to take note of
+ scrollbar attributes and redraw contents accordingly.
- @see FindWindow()
+ @see SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
+ wxScrolled
*/
- static wxWindow* FindWindowByName(const wxString& name,
- wxWindow* parent = NULL);
+ virtual void SetScrollPos(int orientation, int pos,
+ bool refresh = true);
/**
- Sizes the window so that it fits around its subwindows.
-
- This function won't do anything if there are no subwindows and will only really
- work correctly if sizers are used for the subwindows layout.
-
- Also, if the window has exactly one subwindow it is better (faster and the result
- is more precise as Fit() adds some margin to account for fuzziness of its calculations)
- to call:
+ Sets the scrollbar properties of a built-in scrollbar.
- @code
- window->SetClientSize(child->GetSize());
- @endcode
+ @param orientation
+ Determines the scrollbar whose page size is to be set.
+ May be wxHORIZONTAL or wxVERTICAL.
+ @param position
+ The position of the scrollbar in scroll units.
+ @param thumbSize
+ The size of the thumb, or visible portion of the scrollbar, in scroll units.
+ @param range
+ The maximum position of the scrollbar. Value of -1 can be used to
+ ask for the scrollbar to be shown but in the disabled state: this
+ can be used to avoid removing the scrollbar even when it is not
+ needed (currently this is only implemented in wxMSW port).
+ @param refresh
+ @true to redraw the scrollbar, @false otherwise.
- instead of calling Fit().
+ @remarks
+ Let's say you wish to display 50 lines of text, using the same font.
+ The window is sized so that you can only see 16 lines at a time.
+ You would use:
+ @code
+ SetScrollbar(wxVERTICAL, 0, 16, 50);
+ @endcode
+ Note that with the window at this size, the thumb position can never
+ go above 50 minus 16, or 34. You can determine how many lines are
+ currently visible by dividing the current view size by the character
+ height in pixels.
+ When defining your own scrollbar behaviour, you will always need
+ to recalculate the scrollbar settings when the window size changes.
+ You could therefore put your scrollbar calculations and SetScrollbar
+ call into a function named AdjustScrollbars, which can be called
+ initially and also from your wxSizeEvent handler function.
- @see @ref overview_windowsizing
+ @see @ref overview_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
*/
- virtual void Fit();
+ virtual void SetScrollbar(int orientation, int position,
+ int thumbSize, int range,
+ bool refresh = true);
+ //@}
+
/**
- Similar to Fit(), but sizes the interior (virtual) size of a window.
+ @name Sizing functions
- Mainly useful with scrolled windows to reset scrollbars after sizing
- changes that do not trigger a size event, and/or scrolled windows without
- an interior sizer. This function similarly won't do anything if there are
- no subwindows.
+ See also the protected functions DoGetBestSize() and
+ DoGetBestClientSize().
*/
- virtual void FitInside();
+ //@{
/**
- Freezes the window or, in other words, prevents any updates from taking
- place on screen, the window is not redrawn at all.
+ Helper for ensuring EndRepositioningChildren() is called correctly.
- Thaw() must be called to reenable window redrawing. Calls to these two
- functions may be nested but to ensure that the window is properly
- repainted again, you must thaw it exactly as many times as you froze it.
+ This class wraps the calls to BeginRepositioningChildren() and
+ EndRepositioningChildren() by performing the former in its constructor
+ and the latter in its destructor if, and only if, the first call
+ returned @true. This is the simplest way to call these methods and if
+ this class is created as a local variable, it also ensures that
+ EndRepositioningChildren() is correctly called (or not) on scope exit,
+ so its use instead of calling these methods manually is highly
+ recommended.
- If the window has any children, they are recursively frozen too.
+ @since 2.9.5
+ */
+ class ChildrenRepositioningGuard
+ {
+ public:
+ /**
+ Constructor calls wxWindow::BeginRepositioningChildren().
+
+ @param win The window to call BeginRepositioningChildren() on. If
+ it is @NULL, nothing is done.
+ */
+ explicit ChildrenRepositioningGuard(wxWindow* win);
+
+ /**
+ Destructor calls wxWindow::EndRepositioningChildren() if necessary.
+
+ EndRepositioningChildren() is called only if a valid window was
+ passed to the constructor and if BeginRepositioningChildren()
+ returned @true.
+ */
+ ~ChildrenRepositioningGuard();
+ };
+
+ /**
+ Prepare for changing positions of multiple child windows.
+
+ This method should be called before changing positions of multiple
+ child windows to reduce flicker and, in MSW case, even avoid display
+ corruption in some cases. It is used internally by wxWidgets and called
+ automatically when the window size changes but it can also be useful to
+ call it from outside of the library if a repositioning involving
+ multiple children is done without changing the window size.
+
+ If this method returns @true, then EndRepositioningChildren() must be
+ called after setting all children positions. Use
+ ChildrenRepositioningGuard class to ensure that this requirement is
+ satisfied.
+
+ @since 2.9.5
+ */
+ bool BeginRepositioningChildren();
- This method is useful for visual appearance optimization (for example,
- it is a good idea to use it before doing many large text insertions in
- a row into a wxTextCtrl under wxGTK) but is not implemented on all
- platforms nor for all controls so it is mostly just a hint to wxWidgets
- and not a mandatory directive.
+ /**
+ Fix child window positions after setting all of them at once.
- @see wxWindowUpdateLocker, Thaw(), IsFrozen()
- */
- virtual void Freeze();
+ This method must be called if and only if the previous call to
+ BeginRepositioningChildren() returned @true.
+
+ @since 2.9.5
+ */
+ void EndRepositioningChildren();
/**
- Gets the accelerator table for this window. See wxAcceleratorTable.
+ Sets the cached best size value.
+
+ @see GetBestSize()
*/
- wxAcceleratorTable* GetAcceleratorTable() const;
+ void CacheBestSize(const wxSize& size) const;
/**
- Returns the accessible object for this window, if any.
- See also wxAccessible.
+ Converts client area size @a size to corresponding window size.
+
+ In other words, the returned value is what would GetSize() return if this
+ window had client area of given size. Components with wxDefaultCoord
+ value are left unchanged. Note that the conversion is not always
+ exact, it assumes that non-client area doesn't change and so doesn't
+ take into account things like menu bar (un)wrapping or (dis)appearance
+ of the scrollbars.
+
+ @since 2.8.8
+
+ @see WindowToClientSize()
*/
- wxAccessible* GetAccessible();
+ virtual wxSize ClientToWindowSize(const wxSize& size) const;
/**
- @deprecated
- This method is deprecated, use GetEffectiveMinSize() instead.
+ Converts window size @a size to corresponding client area size
+ In other words, the returned value is what would GetClientSize() return if
+ this window had given window size. Components with wxDefaultCoord value
+ are left unchanged.
+
+ Note that the conversion is not always exact, it assumes that
+ non-client area doesn't change and so doesn't take into account things
+ like menu bar (un)wrapping or (dis)appearance of the scrollbars.
+
+ @since 2.8.8
+
+ @see ClientToWindowSize()
*/
- wxSize GetAdjustedBestSize() const;
+ virtual wxSize WindowToClientSize(const wxSize& size) const;
/**
- Returns the background colour of the window.
+ Sizes the window so that it fits around its subwindows.
- @see SetBackgroundColour(), SetForegroundColour(), GetForegroundColour()
+ This function won't do anything if there are no subwindows and will only really
+ work correctly if sizers are used for the subwindows layout.
+
+ Also, if the window has exactly one subwindow it is better (faster and the result
+ is more precise as Fit() adds some margin to account for fuzziness of its calculations)
+ to call:
+
+ @code
+ window->SetClientSize(child->GetSize());
+ @endcode
+
+ instead of calling Fit().
+
+ @see @ref overview_windowsizing
*/
- wxColour GetBackgroundColour() const;
+ virtual void Fit();
/**
- Returns the background style of the window.
- The background style can be one of the wxBackgroundStyle.
+ Similar to Fit(), but sizes the interior (virtual) size of a window.
- @see SetBackgroundColour(), GetForegroundColour(),
- SetBackgroundStyle(), SetTransparent()
+ Mainly useful with scrolled windows to reset scrollbars after sizing
+ changes that do not trigger a size event, and/or scrolled windows without
+ an interior sizer. This function similarly won't do anything if there are
+ no subwindows.
*/
- virtual wxBackgroundStyle GetBackgroundStyle() const;
+ virtual void FitInside();
/**
This functions returns the best acceptable minimal size for the window.
control label is not truncated. For windows containing subwindows (typically
wxPanel), the size returned by this function will be the same as the size
the window would have had after calling Fit().
- */
- wxSize GetBestSize() const;
- /**
- Returns the currently captured window.
+ Override virtual DoGetBestSize() or, better, because it's usually more
+ convenient, DoGetBestClientSize() when writing your own custom window
+ class to change the value returned by this public non-virtual method.
- @see HasCapture(), CaptureMouse(), ReleaseMouse(),
- wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
- */
- static wxWindow* GetCapture();
+ Notice that the best size respects the minimal and maximal size
+ explicitly set for the window, if any. So even if some window believes
+ that it needs 200 pixels horizontally, calling SetMaxSize() with a
+ width of 100 would ensure that GetBestSize() returns the width of at
+ most 100 pixels.
- /**
- Returns the caret() associated with the window.
+ @see CacheBestSize(), @ref overview_windowsizing
*/
- wxCaret* GetCaret() const;
+ wxSize GetBestSize() const;
/**
- Returns the character height for this window.
- */
- virtual int GetCharHeight() const;
+ Returns the best height needed by this window if it had the given width.
- /**
- Returns the average character width for this window.
- */
- virtual int GetCharWidth() const;
+ @see DoGetBestClientHeight()
- //@{
- /**
- Returns a reference to the list of the window's children. @c wxWindowList
- is a type-safe wxList-like class whose elements are of type @c wxWindow*.
- */
- wxWindowList& GetChildren();
- const wxWindowList& GetChildren() const;
- //@}
+ @since 2.9.4
+ */
+ int GetBestHeight(int width) const;
/**
- Returns the default font and colours which are used by the control.
-
- This is useful if you want to use the same font or colour in your own control
- as in a standard control -- which is a much better idea than hard coding specific
- colours or fonts which might look completely out of place on the users
- system, especially if it uses themes.
-
- The @a variant parameter is only relevant under Mac currently and is
- ignore under other platforms. Under Mac, it will change the size of the
- returned font. See SetWindowVariant() for more about this.
-
- This static method is "overridden" in many derived classes and so calling,
- for example, wxButton::GetClassDefaultAttributes() will typically
- return the values appropriate for a button which will be normally different
- from those returned by, say, wxListCtrl::GetClassDefaultAttributes().
+ Returns the best width needed by this window if it had the given height.
- The @c wxVisualAttributes structure has at least the fields
- @c font, @c colFg and @c colBg. All of them may be invalid
- if it was not possible to determine the default control appearance or,
- especially for the background colour, if the field doesn't make sense as is
- the case for @c colBg for the controls with themed background.
+ @see DoGetBestClientWidth()
- @see InheritAttributes()
- */
- static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
+ @since 2.9.4
+ */
+ int GetBestWidth(int height) const;
- //@{
/**
Returns the size of the window 'client area' in pixels.
+
The client area is the area which may be drawn on by the programmer,
excluding title bar, border, scrollbars, etc.
Note that if this window is a top-level one and it is currently minimized, the
return size is empty (both width and height are 0).
- @param width
- Receives the client width in pixels.
- @param height
- Receives the client height in pixels.
+ @beginWxPerlOnly
+ In wxPerl this method takes no parameters and returns
+ a 2-element list (width, height).
+ @endWxPerlOnly
@see GetSize(), GetVirtualSize()
*/
void GetClientSize(int* width, int* height) const;
- wxSize GetClientSize() const;
- //@}
-
- /**
- Returns a pointer to the window's layout constraints, or @NULL if there are none.
- */
- wxLayoutConstraints* GetConstraints() const;
-
- /**
- Return the sizer that this window is a member of, if any, otherwise @NULL.
- */
- wxSizer* GetContainingSizer() const;
-
- /**
- Return the cursor associated with this window.
-
- @see SetCursor()
- */
- const wxCursor& GetCursor() const;
-
- /**
- Currently this is the same as calling
- wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
-
- One advantage of using this function compared to the static version is that
- the call is automatically dispatched to the correct class (as usual with
- virtual functions) and you don't have to specify the class name explicitly.
-
- The other one is that in the future this function could return different
- results, for example it might return a different font for an "Ok" button
- than for a generic button if the users GUI is configured to show such buttons
- in bold font. Of course, the down side is that it is impossible to call this
- function without actually having an object to apply it to whereas the static
- version can be used without having to create an object first.
- */
- virtual wxVisualAttributes GetDefaultAttributes() const;
/**
- Returns the associated drop target, which may be @NULL.
-
- @see SetDropTarget(), @ref overview_dnd
+ @overload
*/
- wxDropTarget* GetDropTarget() const;
+ wxSize GetClientSize() const;
/**
Merges the window's best size into the min size and returns the result.
This is the value used by sizers to determine the appropriate
- ammount of space to allocate for the widget.
-
- @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
- */
- wxSize GetEffectiveMinSize() const;
-
- /**
- Returns the event handler for this window.
- By default, the window is its own event handler.
-
- @see SetEventHandler(), PushEventHandler(),
- PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
- */
- wxEvtHandler* GetEventHandler() const;
-
- /**
- Returns the extra style bits for the window.
- */
- long GetExtraStyle() const;
-
- /**
- Returns the font for this window.
-
- @see SetFont()
- */
- wxFont GetFont() const;
-
- /**
- Returns the foreground colour of the window.
-
- @remarks The interpretation of foreground colour is open to
- interpretation according to the window class; it may be
- the text colour or other colour, or it may not be used at all.
-
- @see SetForegroundColour(), SetBackgroundColour(),
- GetBackgroundColour()
- */
- wxColour GetForegroundColour();
-
- /**
- Returns the grandparent of a window, or @NULL if there isn't one.
- */
- wxWindow* GetGrandParent() const;
-
- /**
- Returns the platform-specific handle of the physical window.
- Cast it to an appropriate handle, such as @b HWND for Windows,
- @b Widget for Motif, @b GtkWidget for GTK or @b WinHandle for PalmOS.
- */
- void* GetHandle() const;
-
- /**
- Gets the help text to be used as context-sensitive help for this window.
- Note that the text is actually stored by the current wxHelpProvider
- implementation, and not in the window object itself.
-
- @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
- */
- virtual wxString GetHelpText() const;
-
- /**
- Gets the help text to be used as context-sensitive help for this window.
- This method should be overridden if the help message depends on the position
- inside the window, otherwise GetHelpText() can be used.
-
- @param point
- Coordinates of the mouse at the moment of help event emission.
- @param origin
- Help event origin, see also wxHelpEvent::GetOrigin.
- */
- virtual wxString GetHelpTextAtPoint(const wxPoint point,
- wxHelpEvent::Origin origin) const;
-
- /**
- Returns the identifier of the window.
-
- @remarks Each window has an integer identifier. If the application
- has not provided one (or the default wxID_ANY) an unique
- identifier with a negative value will be generated.
-
- @see SetId(), @ref overview_windowids
- */
- int GetId() const;
+ amount of space to allocate for the widget.
- /**
- Generic way of getting a label from any window, for
- identification purposes.
+ This is the method called by a wxSizer when it queries the size
+ of a window or control.
- @remarks The interpretation of this function differs from class to class.
- For frames and dialogs, the value returned is the
- title. For buttons or static text controls, it is the
- button text. This function can be useful for
- meta-programs (such as testing tools or special-needs
- access programs) which need to identify windows by name.
+ @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
*/
- virtual wxString GetLabel() const;
+ virtual wxSize GetEffectiveMinSize() const;
/**
Returns the maximum size of window's client area.
possible size as well as the upper bound on window's size settable using
SetClientSize().
- @see GetMaxSize()
+ @see GetMaxSize(), @ref overview_windowsizing
*/
- wxSize GetMaxClientSize() const;
+ virtual wxSize GetMaxClientSize() const;
/**
Returns the maximum size of the window.
This is an indication to the sizer layout mechanism that this is the maximum
possible size as well as the upper bound on window's size settable using SetSize().
- @see GetMaxClientSize()
+ @see GetMaxClientSize(), @ref overview_windowsizing
*/
- wxSize GetMaxSize() const;
+ virtual wxSize GetMaxSize() const;
/**
Returns the minimum size of window's client area, an indication to the sizer
It normally just returns the value set by SetMinClientSize(), but it can be
overridden to do the calculation on demand.
- @see GetMinSize()
+ @see GetMinSize(), @ref overview_windowsizing
*/
virtual wxSize GetMinClientSize() const;
This method normally just returns the value set by SetMinSize(), but it
can be overridden to do the calculation on demand.
- @see GetMinClientSize()
+ @see GetMinClientSize(), @ref overview_windowsizing
*/
virtual wxSize GetMinSize() const;
/**
- Returns the window's name.
+ Returns the horizontal component of window minimal size.
- @remarks This name is not guaranteed to be unique; it is up to the
- programmer to supply an appropriate name in the window
- constructor or via SetName().
+ The returned value is wxDefaultCoord if the minimal width was not set.
- @see SetName()
- */
- virtual wxString GetName() const;
+ @see GetMinSize()
+ */
+ int GetMinWidth() const;
/**
- Returns the next window after this one among the parent children or @NULL
- if this window is the last child.
+ Returns the vertical component of window minimal size.
- @since 2.8.8
+ The returned value is wxDefaultCoord if the minimal height was not set.
- @see GetPrevSibling()
- */
- wxWindow* GetNextSibling() const;
+ @see GetMinSize()
+ */
+ int GetMinHeight() const;
/**
- Returns the parent of the window, or @NULL if there is no parent.
- */
- virtual wxWindow* GetParent() const;
+ Returns the horizontal component of window maximal size.
- //@{
- /**
- This function shows a popup menu at the given position in this window and
- returns the selected id. It can be more convenient than the general purpose
- PopupMenu() function for simple menus proposing a choice in a list of
- strings to the user.
-
- @param menu
- The menu to show
- @param pos
- The position at which to show the menu in client coordinates
- @param x
- The horizontal position of the menu
- @param y
- The vertical position of the menu
+ The returned value is wxDefaultCoord if the maximal width was not set.
- @return The selected menu item id or wxID_NONE if none selected or an
- error occurred.
- */
- int GetPopupMenuSelectionFromUser(wxMenu& menu, const wxPoint& pos);
- int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
- //@}
+ @see GetMaxSize()
+ */
+ int GetMaxWidth() const;
- //@{
/**
- This gets the position of the window in pixels, relative to the parent window
- for the child windows or relative to the display origin for the top level windows.
+ Returns the vertical component of window maximal size.
- @param x
- Receives the x position of the window if non-@NULL.
- @param y
- Receives the y position of the window if non-@NULL.
+ The returned value is wxDefaultCoord if the maximal width was not set.
- @see GetScreenPosition()
- */
- void GetPosition(int* x, int* y) const;
- wxPoint GetPosition() const;
- //@}
+ @see GetMaxSize()
+ */
+ int GetMaxHeight() const;
/**
- Returns the previous window before this one among the parent children or @c
- @NULL if this window is the first child.
+ Returns the size of the entire window in pixels, including title bar, border,
+ scrollbars, etc.
- @since 2.8.8
+ Note that if this window is a top-level one and it is currently minimized, the
+ returned size is the restored window size, not the size of the window icon.
- @see GetNextSibling()
- */
- wxWindow* GetPrevSibling() const;
+ @param width
+ Receives the window width.
+ @param height
+ Receives the window height.
- /**
- Returns the position and size of the window as a wxRect object.
+ @beginWxPerlOnly
+ In wxPerl this method is implemented as GetSizeWH() returning
+ a 2-element list (width, height).
+ @endWxPerlOnly
- @see GetScreenRect()
+ @see GetClientSize(), GetVirtualSize(), @ref overview_windowsizing
*/
- wxRect GetRect() const;
+ void GetSize(int* width, int* height) const;
- //@{
/**
- Returns the window position in screen coordinates, whether the window is a
- child window or a top level one.
+ See the GetSize(int*,int*) overload for more info.
+ */
+ wxSize GetSize() const;
- @param x
- Receives the x position of the window on the screen if non-@NULL.
- @param y
- Receives the y position of the window on the screen if non-@NULL.
+ /**
+ This gets the virtual size of the window in pixels.
+ By default it returns the client size of the window, but after a call to
+ SetVirtualSize() it will return the size set with that method.
- @see GetPosition()
+ @see @ref overview_windowsizing
*/
- void GetScreenPosition(int* x, int* y) const;
- wxPoint GetScreenPosition() const;
- //@}
+ wxSize GetVirtualSize() const;
/**
- Returns the position and size of the window on the screen as a wxRect object.
+ Like the other GetVirtualSize() overload but uses pointers instead.
- @see GetRect()
+ @param width
+ Receives the window virtual width.
+ @param height
+ Receives the window virtual height.
*/
- wxRect GetScreenRect() const;
+ void GetVirtualSize(int* width, int* height) const;
/**
- Returns the built-in scrollbar position.
-
- @see See SetScrollbar()
+ Return the largest of ClientSize and BestSize (as determined
+ by a sizer, interior children, or other means)
*/
- virtual int GetScrollPos(int orientation);
+ virtual wxSize GetBestVirtualSize() const;
/**
- Returns the built-in scrollbar range.
+ Returns the magnification of the backing store of this window, eg 2.0
+ for a window on a retina screen.
- @see SetScrollbar()
+ @since 2.9.5
+ */
+ virtual double GetContentScaleFactor() const;
+
+ /**
+ Returns the size of the left/right and top/bottom borders of this window in x
+ and y components of the result respectively.
*/
- virtual int GetScrollRange(int orientation);
+ virtual wxSize GetWindowBorderSize() const;
/**
- Returns the built-in scrollbar thumb size.
+ wxSizer and friends use this to give a chance to a component to recalc
+ its min size once one of the final size components is known. Override
+ this function when that is useful (such as for wxStaticText which can
+ stretch over several lines). Parameter availableOtherDir
+ tells the item how much more space there is available in the opposite
+ direction (-1 if unknown).
+ */
+ virtual bool
+ InformFirstDirection(int direction,
+ int size,
+ int availableOtherDir);
+
+ /**
+ Resets the cached best size value so it will be recalculated the next time it
+ is needed.
- @see SetScrollbar()
+ @see CacheBestSize()
*/
- virtual int GetScrollThumb(int orientation);
+ void InvalidateBestSize();
- //@{
/**
- Returns the size of the entire window in pixels, including title bar, border,
- scrollbars, etc.
+ Posts a size event to the window.
- Note that if this window is a top-level one and it is currently minimized, the
- returned size is the restored window size, not the size of the window icon.
+ This is the same as SendSizeEvent() with @c wxSEND_EVENT_POST argument.
+ */
+ void PostSizeEvent();
- @param width
- Receives the window width.
- @param height
- Receives the window height.
+ /**
+ Posts a size event to the parent of this window.
- @see GetClientSize(), GetVirtualSize()
- */
- void GetSize(int* width, int* height) const;
- wxSize GetSize() const;
- //@}
+ This is the same as SendSizeEventToParent() with @c wxSEND_EVENT_POST
+ argument.
+ */
+ void PostSizeEventToParent();
/**
- Return the sizer associated with the window by a previous call to
- SetSizer() or @NULL.
- */
- wxSizer* GetSizer() const;
+ This function sends a dummy @ref wxSizeEvent "size event" to
+ the window allowing it to re-layout its children positions.
- //@{
- /**
- Gets the dimensions of the string as it would be drawn on the
- window with the currently selected font.
+ It is sometimes useful to call this function after adding or deleting a
+ children after the frame creation or if a child size changes. Note that
+ if the frame is using either sizers or constraints for the children
+ layout, it is enough to call wxWindow::Layout() directly and this
+ function should not be used in this case.
- The text extent is returned in @a w and @a h pointers.
+ If @a flags includes @c wxSEND_EVENT_POST value, this function posts
+ the event, i.e. schedules it for later processing, instead of
+ dispatching it directly. You can also use PostSizeEvent() as a more
+ readable equivalent of calling this function with this flag.
- @param string
- String whose extent is to be measured.
- @param w
- Return value for width.
- @param h
- Return value for height.
- @param descent
- Return value for descent (optional).
- @param externalLeading
- Return value for external leading (optional).
- @param font
- Font to use instead of the current window font (optional).
- @param use16
- If @true, string contains 16-bit characters. The default is @false.
+ @param flags
+ May include @c wxSEND_EVENT_POST. Default value is 0.
*/
- virtual void GetTextExtent(const wxString& string, int* w, int* h,
- int* descent = NULL,
- int* externalLeading = NULL,
- const wxFont* font = NULL,
- bool use16 = false) const;
+ virtual void SendSizeEvent(int flags = 0);
/**
- Gets the dimensions of the string as it would be drawn on the
- window with the currently selected font.
- */
- wxSize GetTextExtent(const wxString& string) const;
- //@}
+ Safe wrapper for GetParent()->SendSizeEvent().
- /**
- Get the associated tooltip or @NULL if none.
- */
- wxToolTip* GetToolTip() const;
+ This function simply checks that the window has a valid parent which is
+ not in process of being deleted and calls SendSizeEvent() on it. It is
+ used internally by windows such as toolbars changes to whose state
+ should result in parent re-layout (e.g. when a toolbar is added to the
+ top of the window, all the other windows must be shifted down).
- /**
- Returns the region specifying which parts of the window have been damaged.
- Should only be called within an wxPaintEvent handler.
+ @see PostSizeEventToParent()
- @see wxRegion, wxRegionIterator
- */
- virtual wxRegion GetUpdateRegion() const;
+ @param flags
+ See description of this parameter in SendSizeEvent() documentation.
+ */
+ void SendSizeEventToParent(int flags = 0);
/**
- Returns a pointer to the current validator for the window, or @NULL if
- there is none.
- */
- wxValidator* GetValidator() const;
+ This sets the size of the window client area in pixels.
- //@{
- /**
- This gets the virtual size of the window in pixels.
- By default it returns the client size of the window, but after a call to
- SetVirtualSize() it will return that size.
+ Using this function to size a window tends to be more device-independent
+ than SetSize(), since the application need not worry about what dimensions
+ the border or title bar have when trying to fit the window around panel
+ items, for example.
- @param width
- Receives the window virtual width.
- @param height
- Receives the window virtual height.
+ @see @ref overview_windowsizing
*/
- void GetVirtualSize(int* width, int* height) const;
- wxSize GetVirtualSize() const;
- //@}
+ void SetClientSize(int width, int height);
/**
- Returns the size of the left/right and top/bottom borders of this window in x
- and y components of the result respectively.
+ @overload
*/
- wxSize GetWindowBorderSize() const;
+ void SetClientSize(const wxSize& size);
/**
- Gets the window style that was passed to the constructor or @b Create
- method. @b GetWindowStyle() is another name for the same function.
+ @overload
*/
- long GetWindowStyleFlag() const;
+ void SetClientSize(const wxRect& rect);
/**
- Returns the value previously passed to SetWindowVariant().
+ This normally does not need to be called by user code.
+ It is called when a window is added to a sizer, and is used so the window
+ can remove itself from the sizer when it is destroyed.
*/
- wxWindowVariant GetWindowVariant() const;
+ void SetContainingSizer(wxSizer* sizer);
/**
- This function will generate the appropriate call to
- Navigate() if the key event is one normally used for
- keyboard navigation and return @true in this case.
+ A @e smart SetSize that will fill in default size components with the
+ window's @e best size values.
- @return Returns @true if the key pressed was for navigation and was
- handled, @false otherwise.
+ Also sets the window's minsize to the value passed in for use with sizers.
+ This means that if a full or partial size is passed to this function then
+ the sizers will use that size instead of the results of GetBestSize() to
+ determine the minimum needs of the window for layout.
- @see Navigate()
+ Most controls will use this to set their initial size, and their min
+ size to the passed in value (if any.)
+
+ @see SetSize(), GetBestSize(), GetEffectiveMinSize(),
+ @ref overview_windowsizing
*/
- bool HandleAsNavigationKey(const wxKeyEvent& event);
+ void SetInitialSize(const wxSize& size = wxDefaultSize);
/**
- Shorthand for:
+ Sets the maximum client size of the window, to indicate to the sizer
+ layout mechanism that this is the maximum possible size of its client area.
+
+ Note that this method is just a shortcut for:
@code
- GetEventHandler()->SafelyProcessEvent(event);
+ SetMaxSize(ClientToWindowSize(size));
@endcode
+
+ @see SetMaxSize(), @ref overview_windowsizing
*/
- bool HandleWindowEvent(wxEvent& event);
+ virtual void SetMaxClientSize(const wxSize& size);
/**
- Returns @true if this window has the current mouse capture.
+ Sets the maximum size of the window, to indicate to the sizer layout mechanism
+ that this is the maximum possible size.
- @see CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
- wxMouseCaptureChangedEvent
+ @see SetMaxClientSize(), @ref overview_windowsizing
*/
- virtual bool HasCapture() const;
+ virtual void SetMaxSize(const wxSize& size);
/**
- Returns @true if the window has the given @a exFlag bit set in its
- extra styles.
+ Sets the minimum client size of the window, to indicate to the sizer
+ layout mechanism that this is the minimum required size of window's client
+ area.
- @see SetExtraStyle()
- */
- bool HasExtraStyle(int exFlag) const;
+ You may need to call this if you change the window size after
+ construction and before adding to its parent sizer.
- /**
- Returns @true if the window has the given @a flag bit set.
- */
- bool HasFlag(int flag) const;
+ Note, that just as with SetMinSize(), calling this method doesn't
+ prevent the program from explicitly making the window smaller than the
+ specified size.
- /**
- Returns @true if the window (or in case of composite controls, its main
- child window) has focus.
+ Note that this method is just a shortcut for:
+ @code
+ SetMinSize(ClientToWindowSize(size));
+ @endcode
- @see FindFocus()
+ @see SetMinSize(), @ref overview_windowsizing
*/
- virtual bool HasFocus() const;
+ virtual void SetMinClientSize(const wxSize& size);
/**
- This method should be overridden to return @true if this window has
- multiple pages. All standard class with multiple pages such as
- wxNotebook, wxListbook and wxTreebook already override it to return @true
- and user-defined classes with similar behaviour should do it as well to
- allow the library to handle such windows appropriately.
- */
- virtual bool HasMultiplePages() const;
+ Sets the minimum size of the window, to indicate to the sizer layout
+ mechanism that this is the minimum required size.
- /**
- Returns @true if this window has a scroll bar for this orientation.
+ You may need to call this if you change the window size after
+ construction and before adding to its parent sizer.
- @param orient
- Orientation to check, either wxHORIZONTAL or wxVERTICAL.
- */
- virtual bool HasScrollbar(int orient) const;
-
- /**
- Returns @true if this window background is transparent (as, for example,
- for wxStaticText) and should show the parent window background.
+ Notice that calling this method doesn't prevent the program from making
+ the window explicitly smaller than the specified size by calling
+ SetSize(), it just ensures that it won't become smaller than this size
+ during the automatic layout.
- This method is mostly used internally by the library itself and you normally
- shouldn't have to call it. You may, however, have to override it in your
- wxWindow-derived class to ensure that background is painted correctly.
+ @see SetMinClientSize(), @ref overview_windowsizing
*/
- virtual bool HasTransparentBackground() const;
+ virtual void SetMinSize(const wxSize& size);
/**
- Equivalent to calling wxWindow::Show(@false).
- */
- bool Hide();
+ Sets the size of the window in pixels.
- /**
- This function hides a window, like Hide(), but using a special visual
- effect if possible.
+ @param x
+ Required x position in pixels, or wxDefaultCoord to indicate that the
+ existing value should be used.
+ @param y
+ Required y position in pixels, or wxDefaultCoord to indicate that the
+ existing value should be used.
+ @param width
+ Required width in pixels, or wxDefaultCoord to indicate that the existing
+ value should be used.
+ @param height
+ Required height position in pixels, or wxDefaultCoord to indicate that the
+ existing value should be used.
+ @param sizeFlags
+ Indicates the interpretation of other parameters.
+ It is a bit list of the following:
+ - @c wxSIZE_AUTO_WIDTH: a wxDefaultCoord width value is taken to indicate
+ a wxWidgets-supplied default width.
+ - @c wxSIZE_AUTO_HEIGHT: a wxDefaultCoord height value is taken to indicate
+ a wxWidgets-supplied default height.
+ - @c wxSIZE_AUTO: wxDefaultCoord size values are taken to indicate
+ a wxWidgets-supplied default size.
+ - @c wxSIZE_USE_EXISTING: existing dimensions should be used
+ if wxDefaultCoord values are supplied.
+ - @c wxSIZE_ALLOW_MINUS_ONE: allow negative dimensions (i.e. value of
+ wxDefaultCoord) to be interpreted as real
+ dimensions, not default values.
+ - @c wxSIZE_FORCE: normally, if the position and the size of the window are
+ already the same as the parameters of this function,
+ nothing is done. but with this flag a window resize may
+ be forced even in this case (supported in wx 2.6.2 and
+ later and only implemented for MSW and ignored elsewhere
+ currently).
- The parameters of this function are the same as for ShowWithEffect(),
- please see their description there.
+ @remarks This overload sets the position and optionally size, of the window.
+ Parameters may be wxDefaultCoord to indicate either that a default
+ should be supplied by wxWidgets, or that the current value of the
+ dimension should be used.
- @since 2.9.0
+ @see Move(), @ref overview_windowsizing
*/
- virtual bool HideWithEffect(wxShowEffect effect,
- unsigned timeout = 0);
+ void SetSize(int x, int y, int width, int height,
+ int sizeFlags = wxSIZE_AUTO);
/**
- This function is (or should be, in case of custom controls) called during
- window creation to intelligently set up the window visual attributes, that is
- the font and the foreground and background colours.
+ Sets the size of the window in pixels.
+ The size is specified using a wxRect, wxSize or by a couple of @c int objects.
- By "intelligently" the following is meant: by default, all windows use their
- own @ref GetClassDefaultAttributes() default attributes.
- However if some of the parents attributes are explicitly (that is, using
- SetFont() and not wxWindow::SetOwnFont) changed and if the corresponding
- attribute hadn't been explicitly set for this window itself, then this
- window takes the same value as used by the parent.
- In addition, if the window overrides ShouldInheritColours() to return @false,
- the colours will not be changed no matter what and only the font might.
+ @remarks This form must be used with non-default width and height values.
- This rather complicated logic is necessary in order to accommodate the
- different usage scenarios. The most common one is when all default attributes
- are used and in this case, nothing should be inherited as in modern GUIs
- different controls use different fonts (and colours) than their siblings so
- they can't inherit the same value from the parent. However it was also deemed
- desirable to allow to simply change the attributes of all children at once by
- just changing the font or colour of their common parent, hence in this case we
- do inherit the parents attributes.
+ @see Move(), @ref overview_windowsizing
*/
- void InheritAttributes();
+ void SetSize(const wxRect& rect);
/**
- Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
- to the dialog via validators.
+ @overload
*/
- void InitDialog();
+ void SetSize(const wxSize& size);
/**
- Resets the cached best size value so it will be recalculated the next time it
- is needed.
+ @overload
*/
- void InvalidateBestSize();
+ void SetSize(int width, int height);
/**
- Returns @true if the window contents is double-buffered by the system, i.e. if
- any drawing done on the window is really done on a temporary backing surface
- and transferred to the screen all at once later.
+ Use of this function for windows which are not toplevel windows
+ (such as wxDialog or wxFrame) is discouraged.
+ Please use SetMinSize() and SetMaxSize() instead.
- @see wxBufferedDC
+ @see wxTopLevelWindow::SetSizeHints, @ref overview_windowsizing
*/
- virtual bool IsDoubleBuffered() const;
+ virtual void SetSizeHints( const wxSize& minSize,
+ const wxSize& maxSize=wxDefaultSize,
+ const wxSize& incSize=wxDefaultSize);
+ virtual void SetSizeHints( int minW, int minH,
+ int maxW = -1, int maxH = -1,
+ int incW = -1, int incH = -1 );
/**
- Returns @true if the window is enabled, i.e. if it accepts user input,
- @false otherwise.
-
- Notice that this method can return @false even if this window itself hadn't
- been explicitly disabled when one of its parent windows is disabled.
- To get the intrinsic status of this window, use IsThisEnabled()
+ Sets the virtual size of the window in pixels.
- @see Enable()
+ @see @ref overview_windowsizing
*/
- virtual bool IsEnabled() const;
+ void SetVirtualSize(int width, int height);
- //@{
/**
- Returns @true if the given point or rectangle area has been exposed since the
- last repaint. Call this in an paint event handler to optimize redrawing by
- only redrawing those areas, which have been exposed.
+ @overload
*/
- bool IsExposed(int x, int y) const;
- const bool IsExposed(wxPoint amp;pt) const;
- const bool IsExposed(int x, int y, int w, int h) const;
- const bool IsExposed(wxRect amp;rect) const;
+ void SetVirtualSize(const wxSize& size);
+
//@}
- /**
- Returns @true if the window is currently frozen by a call to Freeze().
- @see Freeze(), Thaw()
+ /**
+ @name Positioning functions
*/
- virtual bool IsFrozen() const;
+ //@{
/**
- Returns @true if the window is retained, @false otherwise.
+ A synonym for Centre().
+ */
+ void Center(int dir = wxBOTH);
- @remarks Retained windows are only available on X platforms.
+ /**
+ A synonym for CentreOnParent().
*/
- virtual bool IsRetained() const;
+ void CenterOnParent(int dir = wxBOTH);
/**
- Return whether a scrollbar is always shown.
+ Centres the window.
- @param orient
- Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+ @param direction
+ Specifies the direction for the centring. May be wxHORIZONTAL, wxVERTICAL
+ or wxBOTH. It may also include the wxCENTRE_ON_SCREEN flag
+ if you want to centre the window on the entire screen and not on its
+ parent window.
- @see AlwaysShowScrollbars()
+ @remarks If the window is a top level one (i.e. doesn't have a parent),
+ it will be centred relative to the screen anyhow.
+
+ @see Center()
*/
- bool IsScrollbarAlwaysShown(int orient);
+ void Centre(int direction = wxBOTH);
/**
- Returns @true if the window is shown, @false if it has been hidden.
+ Centres the window on its parent. This is a more readable synonym for Centre().
- @see IsShownOnScreen()
+ @param direction
+ Specifies the direction for the centring. May be wxHORIZONTAL, wxVERTICAL
+ or wxBOTH.
+
+ @remarks This methods provides for a way to centre top level windows over
+ their parents instead of the entire screen. If there
+ is no parent or if the window is not a top level
+ window, then behaviour is the same as Centre().
+
+ @see wxTopLevelWindow::CentreOnScreen
*/
- virtual bool IsShown() const;
+ void CentreOnParent(int direction = wxBOTH);
/**
- Returns @true if the window is physically visible on the screen, i.e. it
- is shown and all its parents up to the toplevel window are shown as well.
+ This gets the position of the window in pixels, relative to the parent window
+ for the child windows or relative to the display origin for the top level windows.
- @see IsShown()
+ @param x
+ Receives the x position of the window if non-@NULL.
+ @param y
+ Receives the y position of the window if non-@NULL.
+
+ @beginWxPerlOnly
+ In wxPerl this method is implemented as GetPositionXY() returning
+ a 2-element list (x, y).
+ @endWxPerlOnly
+
+ @see GetScreenPosition()
*/
- virtual bool IsShownOnScreen() const;
+ void GetPosition(int* x, int* y) const;
/**
- Returns @true if this window is intrinsically enabled, @false otherwise,
- i.e. if @ref Enable() Enable(@false) had been called. This method is
- mostly used for wxWidgets itself, user code should normally use
- IsEnabled() instead.
+ This gets the position of the window in pixels, relative to the parent window
+ for the child windows or relative to the display origin for the top level windows.
+
+ @see GetScreenPosition()
*/
- bool IsThisEnabled() const;
+ wxPoint GetPosition() const;
/**
- Returns @true if the given window is a top-level one. Currently all frames and
- dialogs are considered to be top-level windows (even if they have a parent
- window).
+ Returns the position and size of the window as a wxRect object.
+
+ @see GetScreenRect()
*/
- bool IsTopLevel() const;
+ wxRect GetRect() const;
/**
- Invokes the constraint-based layout algorithm or the sizer-based algorithm
- for this window.
+ Returns the window position in screen coordinates, whether the window is a
+ child window or a top level one.
- See SetAutoLayout(): when auto layout is on, this function gets called automatically
- when the window is resized.
+ @param x
+ Receives the x position of the window on the screen if non-@NULL.
+ @param y
+ Receives the y position of the window on the screen if non-@NULL.
- @see @ref overview_windowsizing
+ @see GetPosition()
*/
- void Layout();
+ void GetScreenPosition(int* x, int* y) const;
/**
- Lowers the window to the bottom of the window hierarchy (Z-order).
+ Returns the window position in screen coordinates, whether the window is a
+ child window or a top level one.
- @see Raise()
+ @see GetPosition()
*/
- void Lower();
+ wxPoint GetScreenPosition() const;
+
+ /**
+ Returns the position and size of the window on the screen as a wxRect object.
+
+ @see GetRect()
+ */
+ wxRect GetScreenRect() const;
/**
- Disables all other windows in the application so that
- the user can only interact with this window.
+ Get the origin of the client area of the window relative to the
+ window top left corner (the client area may be shifted because of
+ the borders, scrollbars, other decorations...)
+ */
+ virtual wxPoint GetClientAreaOrigin() const;
- @param flag
- If @true, this call disables all other windows in the application so that
- the user can only interact with this window. If @false, the effect is
- reversed.
+ /**
+ Get the client rectangle in window (i.e.\ client) coordinates
*/
- virtual void MakeModal(bool flag);
+ wxRect GetClientRect() const;
+
+
/**
Moves the window to the given position.
Required x position.
@param y
Required y position.
+ @param flags
+ See SetSize() for more info about this parameter.
@remarks Implementations of SetSize can also implicitly implement the
Move() function, which is defined in the base wxWindow class as the call:
@see SetSize()
*/
- void Move(int x, int y);
+ void Move(int x, int y, int flags = wxSIZE_USE_EXISTING);
/**
Moves the window to the given position.
@param pt
wxPoint object representing the position.
+ @param flags
+ See SetSize() for more info about this parameter.
@remarks Implementations of SetSize() can also implicitly implement the
Move() function, which is defined in the base wxWindow class as the call:
@see SetSize()
*/
- void Move(const wxPoint& pt);
+ void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING);
- /**
- Moves this window in the tab navigation order after the specified @e win.
- This means that when the user presses @c TAB key on that other window,
- the focus switches to this window.
+ void SetPosition(const wxPoint& pt);
- Default tab order is the same as creation order, this function and
- MoveBeforeInTabOrder() allow to change
- it after creating all the windows.
+ //@}
- @param win
- A sibling of this window which should precede it in tab order,
- must not be @NULL
- */
- void MoveAfterInTabOrder(wxWindow* win);
/**
- Same as MoveAfterInTabOrder() except that it inserts this window just
- before @a win instead of putting it right after it.
+ @name Coordinate conversion functions
*/
- void MoveBeforeInTabOrder(wxWindow* win);
+ //@{
/**
- Performs a keyboard navigation action starting from this window.
- This method is equivalent to calling NavigateIn() method on the
- parent window.
-
- @param flags
- A combination of wxNavigationKeyEvent::IsForward and
- wxNavigationKeyEvent::WinChange.
+ Converts to screen coordinates from coordinates relative to this window.
- @return Returns @true if the focus was moved to another window or @false
- if nothing changed.
+ @param x
+ A pointer to a integer value for the x coordinate. Pass the client
+ coordinate in, and a screen coordinate will be passed out.
+ @param y
+ A pointer to a integer value for the y coordinate. Pass the client
+ coordinate in, and a screen coordinate will be passed out.
- @remarks You may wish to call this from a text control custom keypress
- handler to do the default navigation behaviour for the
- tab key, since the standard default behaviour for a
- multiline text control with the wxTE_PROCESS_TAB style
- is to insert a tab and not navigate to the next
- control. See also wxNavigationKeyEvent and
- HandleAsNavigationKey.
+ @beginWxPerlOnly
+ In wxPerl this method returns a 2-element list instead of
+ modifying its parameters.
+ @endWxPerlOnly
*/
- bool Navigate(int flags = wxNavigationKeyEvent::IsForward);
+ void ClientToScreen(int* x, int* y) const;
/**
- Performs a keyboard navigation action inside this window.
- See Navigate() for more information.
+ Converts to screen coordinates from coordinates relative to this window.
+
+ @param pt
+ The client position for the second form of the function.
*/
- bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward);
+ wxPoint ClientToScreen(const wxPoint& pt) const;
/**
- Create a new ID or range of IDs that are not currently in use.
- The IDs will be reserved until assigned to a wxWindow ID
- or unreserved with UnreserveControlId().
+ Converts a point or size from dialog units to pixels.
- See @ref overview_windowids for more information.
+ For the x dimension, the dialog units are multiplied by the average character
+ width and then divided by 4.
+ For the y dimension, the dialog units are multiplied by the average character
+ height and then divided by 8.
- @param count
- The number of sequential IDs to reserve.
+ @remarks Dialog units are used for maintaining a dialog's proportions
+ even if the font changes.
+ You can also use these functions programmatically.
+ A convenience macro is defined:
+ @code
+ #define wxDLG_UNIT(parent, pt) parent->ConvertDialogToPixels(pt)
+ @endcode
- @return Returns the ID or the first ID of the range, or wxID_NONE if the
- specified number of identifiers couldn't be allocated.
+ @see ConvertPixelsToDialog()
+ */
+ wxPoint ConvertDialogToPixels(const wxPoint& pt) const;
- @see UnreserveControlId(), wxIdManager,
- @ref overview_windowids
+ /**
+ @overload
*/
- static wxWindowID NewControlId(int count = 1);
+ wxSize ConvertDialogToPixels(const wxSize& sz) const;
/**
- This virtual function is normally only used internally, but
- sometimes an application may need it to implement functionality
- that should not be disabled by an application defining an OnIdle
- handler in a derived class.
+ Converts a point or size from pixels to dialog units.
- This function may be used to do delayed painting, for example,
- and most implementations call UpdateWindowUI()
- in order to send update events to the window in idle time.
+ For the x dimension, the pixels are multiplied by 4 and then divided by the
+ average character width.
+ For the y dimension, the pixels are multiplied by 8 and then divided by the
+ average character height.
+
+ @remarks Dialog units are used for maintaining a dialog's proportions
+ even if the font changes.
+
+ @see ConvertDialogToPixels()
*/
- virtual void OnInternalIdle();
+ wxPoint ConvertPixelsToDialog(const wxPoint& pt) const;
/**
- Same as #ScrollLines (-1).
+ @overload
*/
- bool LineUp();
+ wxSize ConvertPixelsToDialog(const wxSize& sz) const;
/**
- Same as #ScrollLines (1).
+ Converts from screen to client window coordinates.
+
+ @param x
+ Stores the screen x coordinate and receives the client x coordinate.
+ @param y
+ Stores the screen x coordinate and receives the client x coordinate.
*/
- bool LineDown();
+ void ScreenToClient(int* x, int* y) const;
/**
- Same as #ScrollPages (-1).
+ Converts from screen to client window coordinates.
+
+ @param pt
+ The screen position.
*/
- bool PageUp();
+ wxPoint ScreenToClient(const wxPoint& pt) const;
+
+ //@}
+
/**
- Same as #ScrollPages (1).
+ @name Drawing-related functions
*/
- bool PageDown();
-
+ //@{
/**
- Removes and returns the top-most event handler on the event handler stack.
+ Clears the window by filling it with the current background colour.
- @param deleteHandler
- If this is @true, the handler will be deleted after it is removed.
- The default value is @false.
+ Does not cause an erase background event to be generated.
- @see SetEventHandler(), GetEventHandler(),
- PushEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
+ Notice that this uses wxClientDC to draw on the window and the results
+ of doing it while also drawing on wxPaintDC for this window are
+ undefined. Hence this method shouldn't be used from EVT_PAINT handlers,
+ just use wxDC::Clear() on the wxPaintDC you already use there instead.
*/
- wxEvtHandler* PopEventHandler(bool deleteHandler = false) const;
+ virtual void ClearBackground();
- //@{
/**
- Pops up the given menu at the specified coordinates, relative to this
- window, and returns control when the user has dismissed the menu.
+ Freezes the window or, in other words, prevents any updates from taking
+ place on screen, the window is not redrawn at all.
- If a menu item is selected, the corresponding menu event is generated and will be
- processed as usually. If the coordinates are not specified, current mouse
- cursor position is used.
+ Thaw() must be called to reenable window redrawing. Calls to these two
+ functions may be nested but to ensure that the window is properly
+ repainted again, you must thaw it exactly as many times as you froze it.
- @param menu
- Menu to pop up.
- @param pos
- The position where the menu will appear.
- @param x
- Required x position for the menu to appear.
- @param y
- Required y position for the menu to appear.
+ If the window has any children, they are recursively frozen too.
- @remarks Just before the menu is popped up, wxMenu::UpdateUI is called to
- ensure that the menu items are in the correct state.
- The menu does not get deleted by the window.
- It is recommended to not explicitly specify coordinates when
- calling PopupMenu in response to mouse click, because some of
- the ports (namely, wxGTK) can do a better job of positioning
- the menu in that case.
+ This method is useful for visual appearance optimization (for example,
+ it is a good idea to use it before doing many large text insertions in
+ a row into a wxTextCtrl under wxGTK) but is not implemented on all
+ platforms nor for all controls so it is mostly just a hint to wxWidgets
+ and not a mandatory directive.
- @see wxMenu
+ @see wxWindowUpdateLocker, Thaw(), IsFrozen()
*/
- bool PopupMenu(wxMenu* menu,
- const wxPoint& pos = wxDefaultPosition);
- bool PopupMenu(wxMenu* menu, int x, int y);
- //@}
+ void Freeze();
/**
- Posts a size event to the window.
+ Re-enables window updating after a previous call to Freeze().
- This is the same as SendSizeEvent() with @c wxSEND_EVENT_POST argument.
- */
- void PostSizeEvent();
+ To really thaw the control, it must be called exactly the same number
+ of times as Freeze().
- /**
- Posts a size event to the parent of this window.
+ If the window has any children, they are recursively thawed too.
- This is the same as SendSizeEventToParent() with @c wxSEND_EVENT_POST
- argument.
- */
- void PostSizeEventToParent();
+ @see wxWindowUpdateLocker, Freeze(), IsFrozen()
+ */
+ void Thaw();
/**
- Pushes this event handler onto the event stack for the window.
-
- @param handler
- Specifies the handler to be pushed.
+ Returns @true if the window is currently frozen by a call to Freeze().
- @remarks An event handler is an object that is capable of processing the
- events sent to a window. By default, the window is its
- own event handler, but an application may wish to
- substitute another, for example to allow central
- implementation of event-handling for a variety of
- different window classes.
- wxWindow::PushEventHandler allows an application to set up a
- chain of event handlers, where an event not handled by one event
- handler is handed to the next one in the chain.
- Use wxWindow::PopEventHandler to remove the event handler.
-
- @see SetEventHandler(), GetEventHandler(),
- PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
+ @see Freeze(), Thaw()
*/
- void PushEventHandler(wxEvtHandler* handler);
+ bool IsFrozen() const;
/**
- Raises the window to the top of the window hierarchy (Z-order).
- In current version of wxWidgets this works both for managed and child windows.
+ Returns the background colour of the window.
- @see Lower()
+ @see SetBackgroundColour(), SetForegroundColour(), GetForegroundColour()
*/
- void Raise();
+ wxColour GetBackgroundColour() const;
/**
- Causes this window, and all of its children recursively (except under wxGTK1
- where this is not implemented), to be repainted. Note that repainting doesn't
- happen immediately but only during the next event loop iteration, if you need
- to update the window immediately you should use Update() instead.
-
- @param eraseBackground
- If @true, the background will be erased.
- @param rect
- If non-@NULL, only the given rectangle will be treated as damaged.
+ Returns the background style of the window.
- @see RefreshRect()
+ @see SetBackgroundColour(), GetForegroundColour(),
+ SetBackgroundStyle(), SetTransparent()
*/
- virtual void Refresh(bool eraseBackground = true,
- const wxRect* rect = NULL);
+ virtual wxBackgroundStyle GetBackgroundStyle() const;
/**
- Redraws the contents of the given rectangle: only the area inside it will be
- repainted.
-
- This is the same as Refresh() but has a nicer syntax as it can be called
- with a temporary wxRect object as argument like this @c RefreshRect(wxRect(x, y, w, h)).
+ Returns the character height for this window.
*/
- void RefreshRect(const wxRect& rect, bool eraseBackground = true);
+ virtual int GetCharHeight() const;
/**
- Registers a system wide hotkey. Every time the user presses the hotkey
- registered here, this window will receive a hotkey event.
-
- It will receive the event even if the application is in the background
- and does not have the input focus because the user is working with some
- other application.
-
- @param hotkeyId
- Numeric identifier of the hotkey. For applications this must be between 0
- and 0xBFFF. If this function is called from a shared DLL, it must be a
- system wide unique identifier between 0xC000 and 0xFFFF.
- This is a MSW specific detail.
- @param modifiers
- A bitwise combination of wxMOD_SHIFT, wxMOD_CONTROL, wxMOD_ALT
- or wxMOD_WIN specifying the modifier keys that have to be pressed along
- with the key.
- @param virtualKeyCode
- The virtual key code of the hotkey.
+ Returns the average character width for this window.
+ */
+ virtual int GetCharWidth() const;
- @return @true if the hotkey was registered successfully. @false if some
- other application already registered a hotkey with this
- modifier/virtualKeyCode combination.
+ /**
+ Currently this is the same as calling
+ wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
- @remarks Use EVT_HOTKEY(hotkeyId, fnc) in the event table to capture the
- event. This function is currently only implemented
- under Windows. It is used in the Windows CE port for
- detecting hardware button presses.
+ One advantage of using this function compared to the static version is that
+ the call is automatically dispatched to the correct class (as usual with
+ virtual functions) and you don't have to specify the class name explicitly.
- @see UnregisterHotKey()
+ The other one is that in the future this function could return different
+ results, for example it might return a different font for an "Ok" button
+ than for a generic button if the users GUI is configured to show such buttons
+ in bold font. Of course, the down side is that it is impossible to call this
+ function without actually having an object to apply it to whereas the static
+ version can be used without having to create an object first.
*/
- bool RegisterHotKey(int hotkeyId, int modifiers,
- int virtualKeyCode);
+ virtual wxVisualAttributes GetDefaultAttributes() const;
/**
- Releases mouse input captured with CaptureMouse().
+ Returns the font for this window.
- @see CaptureMouse(), HasCapture(), ReleaseMouse(),
- wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
+ @see SetFont()
*/
- virtual void ReleaseMouse();
+ wxFont GetFont() const;
/**
- Removes a child window.
+ Returns the foreground colour of the window.
- This is called automatically by window deletion functions so should not
- be required by the application programmer.
- Notice that this function is mostly internal to wxWidgets and shouldn't be
- called by the user code.
+ @remarks The meaning of foreground colour varies according to the window class;
+ it may be the text colour or other colour, or it may not be used at all.
- @param child
- Child window to remove.
+ @see SetForegroundColour(), SetBackgroundColour(),
+ GetBackgroundColour()
*/
- virtual void RemoveChild(wxWindow* child);
+ wxColour GetForegroundColour() const;
/**
- Find the given @a handler in the windows event handler chain and remove
- (but not delete) it from it.
+ Gets the dimensions of the string as it would be drawn on the
+ window with the currently selected font.
- @param handler
- The event handler to remove, must be non-@NULL and
- must be present in this windows event handlers chain
+ The text extent is returned in the @a w and @a h pointers.
- @return Returns @true if it was found and @false otherwise (this also
- results in an assert failure so this function should
- only be called when the handler is supposed to be there).
+ @param string
+ String whose extent is to be measured.
+ @param w
+ Return value for width.
+ @param h
+ Return value for height.
+ @param descent
+ Return value for descent (optional).
+ @param externalLeading
+ Return value for external leading (optional).
+ @param font
+ Font to use instead of the current window font (optional).
- @see PushEventHandler(), PopEventHandler()
+ @beginWxPerlOnly
+ In wxPerl this method takes only the @a string and optionally
+ @a font parameters, and returns a 4-element list
+ (x, y, descent, externalLeading).
+ @endWxPerlOnly
*/
- bool RemoveEventHandler(wxEvtHandler* handler);
+ void GetTextExtent(const wxString& string,
+ int* w, int* h,
+ int* descent = NULL,
+ int* externalLeading = NULL,
+ const wxFont* font = NULL) const;
/**
- Reparents the window, i.e the window will be removed from its
- current parent window (e.g. a non-standard toolbar in a wxFrame)
- and then re-inserted into another.
-
- @param newParent
- New parent.
+ Gets the dimensions of the string as it would be drawn on the
+ window with the currently selected font.
*/
- virtual bool Reparent(wxWindow* newParent);
+ wxSize GetTextExtent(const wxString& string) const;
- //@{
/**
- Converts from screen to client window coordinates.
+ Returns the region specifying which parts of the window have been damaged.
+ Should only be called within an wxPaintEvent handler.
- @param x
- Stores the screen x coordinate and receives the client x coordinate.
- @param y
- Stores the screen x coordinate and receives the client x coordinate.
- @param pt
- The screen position for the second form of the function.
+ @see wxRegion, wxRegionIterator
*/
- virtual void ScreenToClient(int* x, int* y) const;
- virtual wxPoint ScreenToClient(const wxPoint& pt) const;
- //@}
+ const wxRegion& GetUpdateRegion() const;
/**
- Scrolls the window by the given number of lines down (if @a lines is
- positive) or up.
-
- @return Returns @true if the window was scrolled, @false if it was already
- on top/bottom and nothing was done.
+ Get the update rectangle bounding box in client coords
+ */
+ wxRect GetUpdateClientRect() const;
- @remarks This function is currently only implemented under MSW and
- wxTextCtrl under wxGTK (it also works for wxScrolled classes
- under all platforms).
+ /**
+ Returns @true if this window background is transparent (as, for example,
+ for wxStaticText) and should show the parent window background.
- @see ScrollPages()
+ This method is mostly used internally by the library itself and you normally
+ shouldn't have to call it. You may, however, have to override it in your
+ wxWindow-derived class to ensure that background is painted correctly.
*/
- virtual bool ScrollLines(int lines);
+ virtual bool HasTransparentBackground();
/**
- Scrolls the window by the given number of pages down (if @a pages is
- positive) or up.
-
- @return Returns @true if the window was scrolled, @false if it was already
- on top/bottom and nothing was done.
-
- @remarks This function is currently only implemented under MSW and wxGTK.
-
- @see ScrollLines()
- */
- virtual bool ScrollPages(int pages);
-
- /**
- Physically scrolls the pixels in the window and move child windows accordingly.
+ Causes this window, and all of its children recursively (except under wxGTK1
+ where this is not implemented), to be repainted. Note that repainting doesn't
+ happen immediately but only during the next event loop iteration, if you need
+ to update the window immediately you should use Update() instead.
- @param dx
- Amount to scroll horizontally.
- @param dy
- Amount to scroll vertically.
+ @param eraseBackground
+ If @true, the background will be erased.
@param rect
- Rectangle to scroll, if it is @NULL, the whole window is
- scrolled (this is always the case under wxGTK which doesn't support this
- parameter)
+ If non-@NULL, only the given rectangle will be treated as damaged.
- @remarks Note that you can often use wxScrolled instead of using this
- function directly.
+ @see RefreshRect()
*/
- virtual void ScrollWindow(int dx, int dy,
- const wxRect* rect = NULL);
+ virtual void Refresh(bool eraseBackground = true,
+ const wxRect* rect = NULL);
/**
- This function sends a dummy @ref overview_wxsizeevent "size event" to
- the window allowing it to re-layout its children positions.
-
- It is sometimes useful to call this function after adding or deleting a
- children after the frame creation or if a child size changes. Note that
- if the frame is using either sizers or constraints for the children
- layout, it is enough to call wxWindow::Layout() directly and this
- function should not be used in this case.
-
- If @a flags includes @c wxSEND_EVENT_POST value, this function posts
- the event, i.e. schedules it for later processing, instead of
- dispatching it directly. You can also use PostSizeEvent() as a more
- readable equivalent of calling this function with this flag.
+ Redraws the contents of the given rectangle: only the area inside it will be
+ repainted.
- @param flags
- May include @c wxSEND_EVENT_POST. Default value is 0.
+ This is the same as Refresh() but has a nicer syntax as it can be called
+ with a temporary wxRect object as argument like this @c RefreshRect(wxRect(x, y, w, h)).
*/
- void SendSizeEvent(int flags = 0);
-
- /**
- Safe wrapper for GetParent()->SendSizeEvent().
-
- This function simply checks that the window has a valid parent which is
- not in process of being deleted and calls SendSizeEvent() on it. It is
- used internally by windows such as toolbars changes to whose state
- should result in parent re-layout (e.g. when a toolbar is added to the
- top of the window, all the other windows must be shifted down).
-
- @see PostSizeEventToParent()
-
- @param flags
- See description of this parameter in SendSizeEvent() documentation.
- */
- void SendSizeEventToParent(int flags = 0);
+ void RefreshRect(const wxRect& rect, bool eraseBackground = true);
/**
- Sets the accelerator table for this window. See wxAcceleratorTable.
- */
- virtual void SetAcceleratorTable(const wxAcceleratorTable& accel);
+ Calling this method immediately repaints the invalidated area of the window and
+ all of its children recursively (this normally only happens when the
+ flow of control returns to the event loop).
- /**
- Sets the accessible for this window. Any existing accessible for this window
- will be deleted first, if not identical to @e accessible.
- See also wxAccessible.
+ Notice that this function doesn't invalidate any area of the window so
+ nothing happens if nothing has been invalidated (i.e. marked as requiring
+ a redraw). Use Refresh() first if you want to immediately redraw the
+ window unconditionally.
*/
- void SetAccessible(wxAccessible* accessible);
+ virtual void Update();
/**
- Determines whether the Layout() function will be called automatically
- when the window is resized. Please note that this only happens for the
- windows usually used to contain children, namely wxPanel and wxTopLevelWindow
- (and the classes deriving from them).
-
- This method is called implicitly by SetSizer() but if you use SetConstraints()
- you should call it manually or otherwise the window layout won't be correctly
- updated when its size changes.
-
- @param autoLayout
- Set this to @true if you wish the Layout function to be
- called automatically when the window is resized.
+ Sets the background colour of the window.
- @see SetConstraints()
- */
- void SetAutoLayout(bool autoLayout);
+ Notice that as with SetForegroundColour(), setting the background
+ colour of a native control may not affect the entire control and could
+ be not supported at all depending on the control and platform.
- /**
- Sets the background colour of the window.
Please see InheritAttributes() for explanation of the difference between
this method and SetOwnBackgroundColour().
@param colour
- The colour to be used as the background colour, pass
+ The colour to be used as the background colour; pass
wxNullColour to reset to the default colour.
+ Note that you may want to use wxSystemSettings::GetColour() to retrieve
+ a suitable colour to use rather than setting an hard-coded one.
@remarks The background colour is usually painted by the default
wxEraseEvent event handler function under Windows and
usually the themes represent the appearance chosen by the user
to be used for all applications on the system.
+ @return @true if the colour was really changed, @false if it was already set
+ to this colour and nothing was done.
+
@see GetBackgroundColour(), SetForegroundColour(),
GetForegroundColour(), ClearBackground(),
- Refresh(), wxEraseEvent
+ Refresh(), wxEraseEvent, wxSystemSettings
*/
virtual bool SetBackgroundColour(const wxColour& colour);
/**
- Sets the background style of the window. see GetBackgroundStyle() for
- the description of the possible style values.
+ Sets the background style of the window.
+
+ The default background style is @c wxBG_STYLE_ERASE which indicates that
+ the window background may be erased in @c EVT_ERASE_BACKGROUND handler.
+ This is a safe, compatibility default; however you may want to change it
+ to @c wxBG_STYLE_SYSTEM if you don't define any erase background event
+ handlers at all, to avoid unnecessary generation of erase background
+ events and always let system erase the background. And you should
+ change the background style to @c wxBG_STYLE_PAINT if you define an
+ @c EVT_PAINT handler which completely overwrites the window background as
+ in this case erasing it previously, either in @c EVT_ERASE_BACKGROUND
+ handler or in the system default handler, would result in flicker as
+ the background pixels will be repainted twice every time the window is
+ redrawn. Do ensure that the background is entirely erased by your
+ @c EVT_PAINT handler in this case however as otherwise garbage may be left
+ on screen.
+
+ Notice that in previous versions of wxWidgets a common way to work
+ around the above mentioned flickering problem was to define an empty
+ @c EVT_ERASE_BACKGROUND handler. Setting background style to
+ @c wxBG_STYLE_PAINT is a simpler and more efficient solution to the same
+ problem.
+
+
+ Under wxGTK and wxOSX, you can use ::wxBG_STYLE_TRANSPARENT to obtain
+ full transparency of the window background. Note that wxGTK supports
+ this only since GTK 2.12 with a compositing manager enabled, call
+ IsTransparentBackgroundSupported() to check whether this is the case.
+
+ Also, on order for @c SetBackgroundStyle(wxBG_STYLE_TRANSPARENT) to
+ work, it must be called before Create(). If you're using your own
+ wxWindow-derived class you should write your code in the following way:
+ @code
+ class MyWidget : public wxWindow
+ {
+ public:
+ MyWidget(wxWindow* parent, ...)
+ : wxWindow() // Use default ctor here!
+ {
+ // Do this first:
+ SetBackgroundStyle(wxBG_STYLE_TRANSPARENT);
+
+ // And really create the window afterwards:
+ Create(parent, ...);
+ }
+ };
+ @endcode
@see SetBackgroundColour(), GetForegroundColour(),
- SetTransparent()
- */
- virtual void SetBackgroundStyle(wxBackgroundStyle style);
-
- /**
- This method is only implemented by ports which have support for
- native TAB traversal (such as GTK+ 2.0).
-
- It is called by wxWidgets' container control code to give the native
- system a hint when doing TAB traversal. A call to this does not disable
- or change the effect of programmatically calling SetFocus().
-
- @see wxFocusEvent, wxPanel::SetFocus, wxPanel::SetFocusIgnoringChildren
- */
- virtual void SetCanFocus(bool canFocus);
-
- /**
- Sets the caret() associated with the window.
- */
- void SetCaret(wxCaret* caret) const;
-
- //@{
- /**
- This sets the size of the window client area in pixels.
-
- Using this function to size a window tends to be more device-independent
- than SetSize(), since the application need not worry about what dimensions
- the border or title bar have when trying to fit the window around panel
- items, for example.
-
- @param width
- The required client area width.
- @param height
- The required client area height.
- @param size
- The required client size.
- */
- virtual void SetClientSize(int width, int height);
- virtual void SetClientSize(const wxSize& size);
- //@}
-
- /**
- Sets the window to have the given layout constraints. The window
- will then own the object, and will take care of its deletion.
- If an existing layout constraints object is already owned by the
- window, it will be deleted.
-
- @param constraints
- The constraints to set. Pass @NULL to disassociate and delete the window's
- constraints.
-
- @remarks You must call SetAutoLayout() to tell a window to use
- the constraints automatically in OnSize; otherwise, you
- must override OnSize and call Layout() explicitly. When
- setting both a wxLayoutConstraints and a wxSizer, only
- the sizer will have effect.
- */
- void SetConstraints(wxLayoutConstraints* constraints);
-
- /**
- This normally does not need to be called by user code.
- It is called when a window is added to a sizer, and is used so the window
- can remove itself from the sizer when it is destroyed.
- */
- void SetContainingSizer(wxSizer* sizer);
-
- /**
- Sets the window's cursor. Notice that the window cursor also sets it for the
- children of the window implicitly.
-
- The @a cursor may be @c wxNullCursor in which case the window cursor will
- be reset back to default.
-
- @param cursor
- Specifies the cursor that the window should normally display.
-
- @see ::wxSetCursor, wxCursor
- */
- virtual void SetCursor(const wxCursor& cursor);
-
- /**
- Associates a drop target with this window.
- If the window already has a drop target, it is deleted.
-
- @see GetDropTarget(), @ref overview_dnd
+ SetTransparent(), IsTransparentBackgroundSupported()
*/
- void SetDropTarget(wxDropTarget* target);
+ virtual bool SetBackgroundStyle(wxBackgroundStyle style);
/**
- Sets the event handler for this window.
-
- @param handler
- Specifies the handler to be set.
-
- @remarks An event handler is an object that is capable of processing the
- events sent to a window. By default, the window is its
- own event handler, but an application may wish to
- substitute another, for example to allow central
- implementation of event-handling for a variety of
- different window classes.
- It is usually better to use wxWindow::PushEventHandler since
- this sets up a chain of event handlers, where an event not
- handled by one event handler is handed to the next one in the chain.
-
- @see GetEventHandler(), PushEventHandler(),
- PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
- */
- void SetEventHandler(wxEvtHandler* handler);
+ Checks whether using transparent background might work.
- /**
- Sets the extra style bits for the window.
- The currently defined extra style bits are reported in the class
- description.
- */
- void SetExtraStyle(long exStyle);
+ If this function returns @false, calling SetBackgroundStyle() with
+ ::wxBG_STYLE_TRANSPARENT is not going to work. If it returns @true,
+ setting transparent style should normally succeed.
- /**
- This sets the window to receive keyboard input.
+ Notice that this function would typically be called on the parent of a
+ window you want to set transparent background style for as the window
+ for which this method is called must be fully created.
- @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
- wxPanel::SetFocusIgnoringChildren
- */
- virtual void SetFocus();
+ @param reason
+ If not @NULL, a reason message is provided if transparency is not
+ supported.
- /**
- This function is called by wxWidgets keyboard navigation code when the user
- gives the focus to this window from keyboard (e.g. using @c TAB key).
+ @return @true if background transparency is supported.
- By default this method simply calls SetFocus() but
- can be overridden to do something in addition to this in the derived classes.
+ @since 2.9.4
*/
- virtual void SetFocusFromKbd();
+ virtual bool IsTransparentBackgroundSupported(wxString *reason = NULL) const;
/**
Sets the font for this window. This function should not be called for the
Font to associate with this window, pass
wxNullFont to reset to the default font.
- @return @true if the want was really changed, @false if it was already set
- to this font and so nothing was done.
+ @return @true if the font was really changed, @false if it was already set
+ to this font and nothing was done.
@see GetFont(), InheritAttributes()
*/
- bool SetFont(const wxFont& font);
+ virtual bool SetFont(const wxFont& font);
/**
Sets the foreground colour of the window.
+
+ The meaning of foreground colour varies according to the window class;
+ it may be the text colour or other colour, or it may not be used at
+ all. Additionally, not all native controls support changing their
+ foreground colour so this method may change their colour only partially
+ or even not at all.
+
Please see InheritAttributes() for explanation of the difference between
this method and SetOwnForegroundColour().
@param colour
- The colour to be used as the foreground colour, pass
+ The colour to be used as the foreground colour; pass
wxNullColour to reset to the default colour.
- @remarks The interpretation of foreground colour is open to
- interpretation according to the window class; it may be
- the text colour or other colour, or it may not be used at all.
+ @return @true if the colour was really changed, @false if it was already set
+ to this colour and nothing was done.
@see GetForegroundColour(), SetBackgroundColour(),
GetBackgroundColour(), ShouldInheritColours()
*/
- virtual void SetForegroundColour(const wxColour& colour);
+ virtual bool SetForegroundColour(const wxColour& colour);
/**
- Sets the help text to be used as context-sensitive help for this window.
- Note that the text is actually stored by the current wxHelpProvider
- implementation, and not in the window object itself.
+ Sets the background colour of the window but prevents it from being inherited
+ by the children of this window.
- @see GetHelpText(), wxHelpProvider::AddHelp()
+ @see SetBackgroundColour(), InheritAttributes()
*/
- virtual void SetHelpText(const wxString& helpText);
+ void SetOwnBackgroundColour(const wxColour& colour);
/**
- Sets the identifier of the window.
-
- @remarks Each window has an integer identifier. If the application has
- not provided one, an identifier will be generated.
- Normally, the identifier should be provided on creation
- and should not be modified subsequently.
+ Return @true if this window inherits the background colour from its parent.
- @see GetId(), @ref overview_windowids
+ @see SetOwnBackgroundColour(), InheritAttributes()
*/
- void SetId(int id);
+ bool InheritsBackgroundColour() const;
/**
- Sets the initial window size if none is given (i.e. at least one of the
- components of the size passed to ctor/Create() is wxDefaultCoord).
+ Return @true if a background colour has been set for this window.
*/
- virtual void SetInitialBestSize(const wxSize& size);
+ bool UseBgCol() const;
/**
- A @e smart SetSize that will fill in default size components with the
- window's @e best size values.
-
- Also sets the window's minsize to the value passed in for use with sizers.
- This means that if a full or partial size is passed to this function then
- the sizers will use that size instead of the results of GetBestSize() to
- determine the minimum needs of the window for layout.
-
- Most controls will use this to set their initial size, and their min
- size to the passed in value (if any.)
+ Sets the font of the window but prevents it from being inherited by the
+ children of this window.
- @see SetSize(), GetBestSize(), GetEffectiveMinSize(),
- @ref overview_windowsizing
+ @see SetFont(), InheritAttributes()
*/
- void SetInitialSize(const wxSize& size = wxDefaultSize);
+ void SetOwnFont(const wxFont& font);
/**
- Sets the window's label.
-
- @param label
- The window label.
+ Sets the foreground colour of the window but prevents it from being inherited
+ by the children of this window.
- @see GetLabel()
+ @see SetForegroundColour(), InheritAttributes()
*/
- virtual void SetLabel(const wxString& label);
+ void SetOwnForegroundColour(const wxColour& colour);
/**
- Sets the maximum client size of the window, to indicate to the sizer
- layout mechanism that this is the maximum possible size of its client area.
-
- @see SetMaxSize()
+ @deprecated use wxDC::SetPalette instead.
*/
- void SetMaxClientSize(const wxSize& size);
+ void SetPalette(const wxPalette& pal);
/**
- Sets the maximum size of the window, to indicate to the sizer layout mechanism
- that this is the maximum possible size.
+ Return @true from here to allow the colours of this window to be changed by
+ InheritAttributes(). Returning @false forbids inheriting them from the parent window.
- @see SetMaxClientSize()
+ The base class version returns @false, but this method is overridden in
+ wxControl where it returns @true.
*/
- void SetMaxSize(const wxSize& size);
+ virtual bool ShouldInheritColours() const;
/**
- Sets the minimum client size of the window, to indicate to the sizer
- layout mechanism that this is the minimum required size of window's client
- area.
+ This function tells a window if it should use the system's "theme" code
+ to draw the windows' background instead of its own background drawing
+ code. This does not always have any effect since the underlying platform
+ obviously needs to support the notion of themes in user defined windows.
+ One such platform is GTK+ where windows can have (very colourful) backgrounds
+ defined by a user's selected theme.
- You may need to call this if you change the window size after
- construction and before adding to its parent sizer.
+ Dialogs, notebook pages and the status bar have this flag set to @true
+ by default so that the default look and feel is simulated best.
+ */
+ virtual void SetThemeEnabled(bool enable);
- Note, that just as with SetMinSize(), calling this method doesn't
- prevent the program from explicitly making the window smaller than the
- specified size.
+ /**
+ */
+ virtual bool GetThemeEnabled() const;
- @see SetMinSize()
+ /**
+ Returns @true if the system supports transparent windows and calling
+ SetTransparent() may succeed. If this function returns @false, transparent
+ windows are definitely not supported by the current system.
*/
- void SetMinClientSize(const wxSize& size);
+ virtual bool CanSetTransparent();
/**
- Sets the minimum size of the window, to indicate to the sizer layout
- mechanism that this is the minimum required size.
+ Set the transparency of the window. If the system supports transparent windows,
+ returns @true, otherwise returns @false and the window remains fully opaque.
+ See also CanSetTransparent().
- You may need to call this if you change the window size after
- construction and before adding to its parent sizer.
+ The parameter @a alpha is in the range 0..255 where 0 corresponds to a
+ fully transparent window and 255 to the fully opaque one. The constants
+ @c wxIMAGE_ALPHA_TRANSPARENT and @c wxIMAGE_ALPHA_OPAQUE can be used.
+ */
+ virtual bool SetTransparent(wxByte alpha);
- Notice that calling this method doesn't prevent the program from making
- the window explicitly smaller than the specified size by calling
- SetSize(), it just ensures that it won't become smaller than this size
- during the automatic layout.
+ //@}
+
+
+ /**
+ @name Event-handling functions
- @see SetMinClientSize()
+ wxWindow allows you to build a (sort of) stack of event handlers which
+ can be used to override the window's own event handling.
*/
- void SetMinSize(const wxSize& size);
+ //@{
/**
- Sets the window's name.
+ Returns the event handler for this window.
+ By default, the window is its own event handler.
- @param name
- A name to set for the window.
+ @see SetEventHandler(), PushEventHandler(),
+ PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
+ */
+ wxEvtHandler* GetEventHandler() const;
- @see GetName()
+ /**
+ This function will generate the appropriate call to Navigate() if the key
+ event is one normally used for keyboard navigation and return @true in this case.
+
+ @return Returns @true if the key pressed was for navigation and was
+ handled, @false otherwise.
+
+ @see Navigate()
*/
- virtual void SetName(const wxString& name);
+ bool HandleAsNavigationKey(const wxKeyEvent& event);
/**
- Sets the background colour of the window but prevents it from being inherited
- by the children of this window.
+ Shorthand for:
+ @code
+ GetEventHandler()->SafelyProcessEvent(event);
+ @endcode
- @see SetBackgroundColour(), InheritAttributes()
+ @see ProcessWindowEvent()
*/
- void SetOwnBackgroundColour(const wxColour& colour);
+ bool HandleWindowEvent(wxEvent& event) const;
/**
- Sets the font of the window but prevents it from being inherited by the
- children of this window.
+ Convenient wrapper for ProcessEvent().
- @see SetFont(), InheritAttributes()
+ This is the same as writing @code GetEventHandler()->ProcessEvent(event);
+ @endcode but more convenient. Notice that ProcessEvent() itself can't
+ be called for wxWindow objects as it ignores the event handlers
+ associated with the window; use this function instead.
*/
- void SetOwnFont(const wxFont& font);
+ bool ProcessWindowEvent(wxEvent& event);
/**
- Sets the foreground colour of the window but prevents it from being inherited
- by the children of this window.
+ Wrapper for wxEvtHandler::ProcessEventLocally().
- @see SetForegroundColour(), InheritAttributes()
+ This method is similar to ProcessWindowEvent() but can be used to
+ search for the event handler only in this window and any event handlers
+ pushed on top of it. Unlike ProcessWindowEvent() it won't propagate the
+ event upwards. But it will use the validator and event handlers
+ associated with this window, if any.
+
+ @since 2.9.1
+ */
+ bool ProcessWindowEventLocally(wxEvent& event);
+
+ /**
+ Removes and returns the top-most event handler on the event handler stack.
+
+ E.g. in the case of:
+ @image html overview_events_winstack.png
+ when calling @c W->PopEventHandler(), the event handler @c A will be
+ removed and @c B will be the first handler of the stack.
+
+ Note that it's an error to call this function when no event handlers
+ were pushed on this window (i.e. when the window itself is its only
+ event handler).
+
+ @param deleteHandler
+ If this is @true, the handler will be deleted after it is removed
+ (and the returned value will be @NULL).
+
+ @see @ref overview_events_processing
*/
- void SetOwnForegroundColour(const wxColour& colour);
+ wxEvtHandler* PopEventHandler(bool deleteHandler = false);
/**
- @deprecated use wxDC::SetPalette instead.
+ Pushes this event handler onto the event stack for the window.
+
+ An event handler is an object that is capable of processing the events sent
+ to a window. By default, the window is its own event handler, but an application
+ may wish to substitute another, for example to allow central implementation
+ of event-handling for a variety of different window classes.
+
+ wxWindow::PushEventHandler allows an application to set up a @e stack
+ of event handlers, where an event not handled by one event handler is
+ handed to the next one in the chain.
+
+ E.g. if you have two event handlers @c A and @c B and a wxWindow instance
+ @c W and you call:
+ @code
+ W->PushEventHandler(A);
+ W->PushEventHandler(B);
+ @endcode
+ you will end up with the following situation:
+ @image html overview_events_winstack.png
+
+ Note that you can use wxWindow::PopEventHandler to remove the event handler.
+
+ @param handler
+ Specifies the handler to be pushed.
+ It must not be part of a wxEvtHandler chain; an assert will fail
+ if it's not unlinked (see wxEvtHandler::IsUnlinked).
+
+ @see @ref overview_events_processing
*/
- virtual void SetPalette(wxPalette* palette);
+ void PushEventHandler(wxEvtHandler* handler);
/**
- Sets the position of one of the built-in scrollbars.
+ Find the given @a handler in the windows event handler stack and
+ removes (but does not delete) it from the stack.
- @param orientation
- Determines the scrollbar whose position is to be set.
- May be wxHORIZONTAL or wxVERTICAL.
- @param pos
- Position in scroll units.
- @param refresh
- @true to redraw the scrollbar, @false otherwise.
+ See wxEvtHandler::Unlink() for more info.
- @remarks This function does not directly affect the contents of the
- window: it is up to the application to take note of
- scrollbar attributes and redraw contents accordingly.
+ @param handler
+ The event handler to remove, must be non-@NULL and
+ must be present in this windows event handlers stack.
- @see SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
- wxScrolled
+ @return Returns @true if it was found and @false otherwise (this also
+ results in an assert failure so this function should
+ only be called when the handler is supposed to be there).
+
+ @see PushEventHandler(), PopEventHandler()
*/
- virtual void SetScrollPos(int orientation, int pos,
- bool refresh = true);
+ bool RemoveEventHandler(wxEvtHandler* handler);
/**
- Sets the scrollbar properties of a built-in scrollbar.
+ Sets the event handler for this window.
- @param orientation
- Determines the scrollbar whose page size is to be set.
- May be wxHORIZONTAL or wxVERTICAL.
- @param position
- The position of the scrollbar in scroll units.
- @param thumbSize
- The size of the thumb, or visible portion of the scrollbar, in scroll units.
- @param range
- The maximum position of the scrollbar.
- @param refresh
- @true to redraw the scrollbar, @false otherwise.
+ Note that if you use this function you may want to use as the "next" handler
+ of @a handler the window itself; in this way when @a handler doesn't process
+ an event, the window itself will have a chance to do it.
- @remarks Let's say you wish to display 50 lines of text, using the same
- font. The window is sized so that you can only see 16
- lines at a time.
- You would use:
- @code
- SetScrollbar(wxVERTICAL, 0, 16, 50);
- @endcode
- Note that with the window at this size, the thumb position can never
- go above 50 minus 16, or 34. You can determine how many lines are
- currently visible by dividing the current view size by the character
- height in pixels.
- When defining your own scrollbar behaviour, you will always need
- to recalculate the scrollbar settings when the window size changes.
- You could therefore put your scrollbar calculations and SetScrollbar
- call into a function named AdjustScrollbars, which can be called
- initially and also from your wxSizeEvent handler function.
+ @param handler
+ Specifies the handler to be set. Cannot be @NULL.
- @see @ref overview_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
+ @see @ref overview_events_processing
*/
- virtual void SetScrollbar(int orientation, int position,
- int thumbSize,
- int range,
- bool refresh = true);
+ void SetEventHandler(wxEvtHandler* handler);
- //@{
/**
- Sets the size of the window in pixels.
+ wxWindows cannot be used to form event handler chains; this function
+ thus will assert when called.
- @param x
- Required x position in pixels, or wxDefaultCoord to indicate that the
- existing value should be used.
- @param y
- Required y position in pixels, or wxDefaultCoord to indicate that the
- existing value should be used.
- @param width
- Required width in pixels, or wxDefaultCoord to indicate that the existing
- value should be used.
- @param height
- Required height position in pixels, or wxDefaultCoord to indicate that the
- existing value should be used.
- @param size
- wxSize object for setting the size.
- @param rect
- wxRect object for setting the position and size.
- @param sizeFlags
- Indicates the interpretation of other parameters.
- It is a bit list of the following:
- - @c wxSIZE_AUTO_WIDTH: a wxDefaultCoord width value is taken to indicate
- a wxWidgets-supplied default width.
- - @c wxSIZE_AUTO_HEIGHT: a wxDefaultCoord height value is taken to indicate
- a wxWidgets-supplied default height.
- - @c wxSIZE_AUTO: wxDefaultCoord size values are taken to indicate
- a wxWidgets-supplied default size.
- - @c wxSIZE_USE_EXISTING: existing dimensions should be used
- if wxDefaultCoord values are supplied.
- - @c wxSIZE_ALLOW_MINUS_ONE: allow negative dimensions (i.e. value of
- wxDefaultCoord) to be interpreted as real
- dimensions, not default values.
- - @c wxSIZE_FORCE: normally, if the position and the size of the window are
- already the same as the parameters of this function,
- nothing is done. but with this flag a window resize may
- be forced even in this case (supported in wx 2.6.2 and
- later and only implemented for MSW and ignored elsewhere
- currently).
+ Note that instead you can use PushEventHandler() or SetEventHandler() to
+ implement a stack of event handlers to override wxWindow's own
+ event handling mechanism.
+ */
+ virtual void SetNextHandler(wxEvtHandler* handler);
- @remarks The second form is a convenience for calling the first form with
- default x and y parameters, and must be used with
- non-default width and height values.
- The first form sets the position and optionally size, of the window.
- Parameters may be wxDefaultCoord to indicate either that a default
- should be supplied by wxWidgets, or that the current value of the
- dimension should be used.
+ /**
+ wxWindows cannot be used to form event handler chains; this function
+ thus will assert when called.
- @see Move()
+ Note that instead you can use PushEventHandler() or SetEventHandler() to
+ implement a stack of event handlers to override wxWindow's own
+ event handling mechanism.
*/
- virtual void SetSize(int x, int y, int width, int height,
- int sizeFlags = wxSIZE_AUTO);
- virtual void SetSize(const wxRect& rect);
- virtual void SetSize(int width, int height);
- virtual void SetSize(const wxSize& size);
+ virtual void SetPreviousHandler(wxEvtHandler* handler);
+
//@}
+
+
/**
- Sets the window to have the given layout sizer.
- The window will then own the object, and will take care of its deletion.
- If an existing layout constraints object is already owned by the
- window, it will be deleted if the deleteOld parameter is @true.
+ @name Window styles functions
+ */
+ //@{
- Note that this function will also call SetAutoLayout() implicitly with @true
- parameter if the @a sizer is non-@NULL and @false otherwise.
+ /**
+ Returns the extra style bits for the window.
+ */
+ long GetExtraStyle() const;
- @param sizer
- The sizer to set. Pass @NULL to disassociate and conditionally delete
- the window's sizer. See below.
- @param deleteOld
- If @true (the default), this will delete any pre-existing sizer.
- Pass @false if you wish to handle deleting the old sizer yourself.
+ /**
+ Gets the window style that was passed to the constructor or Create()
+ method. GetWindowStyle() is another name for the same function.
+ */
+ virtual long GetWindowStyleFlag() const;
- @remarks SetSizer enables and disables Layout automatically.
+ /**
+ See GetWindowStyleFlag() for more info.
*/
- void SetSizer(wxSizer* sizer, bool deleteOld = true);
+ long GetWindowStyle() const;
/**
- This method calls SetSizer() and then wxSizer::SetSizeHints which sets the initial
- window size to the size needed to accommodate all sizer elements and sets the
- size hints which, if this window is a top level one, prevent the user from
- resizing it to be less than this minimial size.
+ Returns @true if the window has the given @a exFlag bit set in its
+ extra styles.
+
+ @see SetExtraStyle()
*/
- void SetSizerAndFit(wxSizer* sizer, bool deleteOld = true);
+ bool HasExtraStyle(int exFlag) const;
/**
- This function tells a window if it should use the system's "theme" code
- to draw the windows' background instead if its own background drawing
- code. This does not always have any effect since the underlying platform
- obviously needs to support the notion of themes in user defined windows.
- One such platform is GTK+ where windows can have (very colourful) backgrounds
- defined by a user's selected theme.
+ Returns @true if the window has the given @a flag bit set.
+ */
+ bool HasFlag(int flag) const;
- Dialogs, notebook pages and the status bar have this flag set to @true
- by default so that the default look and feel is simulated best.
+ /**
+ Sets the extra style bits for the window.
+ The currently defined extra style bits are reported in the class
+ description.
*/
- virtual void SetThemeEnabled(bool enable);
+ virtual void SetExtraStyle(long exStyle);
- //@{
/**
- Attach a tooltip to the window.
+ Sets the style of the window. Please note that some styles cannot be changed
+ after the window creation and that Refresh() might need to be called
+ after changing the others for the change to take place immediately.
- wxToolTip pointer can be @NULL in the overload taking the pointer,
- meaning to unset any existing tooltips, however UnsetToolTip() provides
- a more readable alternative to this operation.
+ See @ref overview_windowstyles "Window styles" for more information about flags.
- Notice that these methods are always available, even if wxWidgets was
- compiled with @c wxUSE_TOOLTIPS set to 0, but don't do anything in this
- case.
+ @see GetWindowStyleFlag()
+ */
+ virtual void SetWindowStyleFlag(long style);
- @see GetToolTip(), wxToolTip
+ /**
+ See SetWindowStyleFlag() for more info.
*/
- void SetToolTip(const wxString& tip);
- void SetToolTip(wxToolTip* tip);
- //@}
+ void SetWindowStyle(long style);
/**
- Set the transparency of the window. If the system supports transparent windows,
- returns @true, otherwise returns @false and the window remains fully opaque.
- See also CanSetTransparent().
+ Turns the given @a flag on if it's currently turned off and vice versa.
+ This function cannot be used if the value of the flag is 0 (which is often
+ the case for default flags).
- The parameter @a alpha is in the range 0..255 where 0 corresponds to a
- fully transparent window and 255 to the fully opaque one. The constants
- @c wxIMAGE_ALPHA_TRANSPARENT and @c wxIMAGE_ALPHA_OPAQUE can be used.
- */
- bool SetTransparent(wxByte alpha);
+ Also, please notice that not all styles can be changed after the control
+ creation.
+
+ @return Returns @true if the style was turned on by this function, @false
+ if it was switched off.
+
+ @see SetWindowStyleFlag(), HasFlag()
+ */
+ bool ToggleWindowStyle(int flag);
+
+ //@}
+
+
+ /**
+ @name Tab order functions
+ */
+ //@{
+
+ /**
+ Moves this window in the tab navigation order after the specified @e win.
+ This means that when the user presses @c TAB key on that other window,
+ the focus switches to this window.
+
+ Default tab order is the same as creation order, this function and
+ MoveBeforeInTabOrder() allow to change
+ it after creating all the windows.
+
+ @param win
+ A sibling of this window which should precede it in tab order,
+ must not be @NULL
+ */
+ void MoveAfterInTabOrder(wxWindow* win);
+
+ /**
+ Same as MoveAfterInTabOrder() except that it inserts this window just
+ before @a win instead of putting it right after it.
+ */
+ void MoveBeforeInTabOrder(wxWindow* win);
+
+ /**
+ Performs a keyboard navigation action starting from this window.
+ This method is equivalent to calling NavigateIn() method on the
+ parent window.
+
+ @param flags
+ A combination of wxNavigationKeyEvent::IsForward and
+ wxNavigationKeyEvent::WinChange.
+
+ @return Returns @true if the focus was moved to another window or @false
+ if nothing changed.
+
+ @remarks You may wish to call this from a text control custom keypress
+ handler to do the default navigation behaviour for the
+ tab key, since the standard default behaviour for a
+ multiline text control with the wxTE_PROCESS_TAB style
+ is to insert a tab and not navigate to the next
+ control. See also wxNavigationKeyEvent and
+ HandleAsNavigationKey.
+ */
+ bool Navigate(int flags = wxNavigationKeyEvent::IsForward);
+
+ /**
+ Performs a keyboard navigation action inside this window.
+ See Navigate() for more information.
+ */
+ bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward);
+
+ //@}
+
+
+
+ /**
+ @name Z order functions
+ */
+ //@{
+
+ /**
+ Lowers the window to the bottom of the window hierarchy (Z-order).
+
+ @remarks
+ This function only works for wxTopLevelWindow-derived classes.
+
+ @see Raise()
+ */
+ virtual void Lower();
+
+ /**
+ Raises the window to the top of the window hierarchy (Z-order).
+
+ Notice that this function only requests the window manager to raise
+ this window to the top of Z-order. Depending on its configuration, the
+ window manager may raise the window, not do it at all or indicate that
+ a window requested to be raised in some other way, e.g. by flashing its
+ icon if it is minimized.
+
+ @remarks
+ This function only works for wxTopLevelWindow-derived classes.
+
+ @see Lower()
+ */
+ virtual void Raise();
+
+ //@}
+
+
+ /**
+ @name Window status functions
+ */
+ //@{
+
+
+ /**
+ Equivalent to calling wxWindow::Show(@false).
+ */
+ bool Hide();
+
+ /**
+ This function hides a window, like Hide(), but using a special visual
+ effect if possible.
+
+ The parameters of this function are the same as for ShowWithEffect(),
+ please see their description there.
+
+ @since 2.9.0
+ */
+ virtual bool HideWithEffect(wxShowEffect effect,
+ unsigned int timeout = 0);
+ /**
+ Returns @true if the window is enabled, i.e.\ if it accepts user input,
+ @false otherwise.
+
+ Notice that this method can return @false even if this window itself hadn't
+ been explicitly disabled when one of its parent windows is disabled.
+ To get the intrinsic status of this window, use IsThisEnabled()
+
+ @see Enable()
+ */
+ bool IsEnabled() const;
+
+ /**
+ Returns @true if the given point or rectangle area has been exposed since the
+ last repaint. Call this in an paint event handler to optimize redrawing by
+ only redrawing those areas, which have been exposed.
+ */
+ bool IsExposed(int x, int y) const;
+
+ /**
+ @overload
+ */
+ bool IsExposed(wxPoint& pt) const;
+
+ /**
+ @overload
+ */
+ bool IsExposed(int x, int y, int w, int h) const;
+
+ /**
+ @overload
+ */
+ bool IsExposed(wxRect& rect) const;
+ /**
+ Returns @true if the window is shown, @false if it has been hidden.
+
+ @see IsShownOnScreen()
+ */
+ virtual bool IsShown() const;
+
+ /**
+ Returns @true if the window is physically visible on the screen, i.e.\ it
+ is shown and all its parents up to the toplevel window are shown as well.
+
+ @see IsShown()
+ */
+ virtual bool IsShownOnScreen() const;
+
+ /**
+ Disables the window. Same as @ref Enable() Enable(@false).
+
+ @return Returns @true if the window has been disabled, @false if it had
+ been already disabled before the call to this function.
+ */
+ bool Disable();
+
+ /**
+ Enable or disable the window for user input. Note that when a parent window is
+ disabled, all of its children are disabled as well and they are reenabled again
+ when the parent is.
+
+ @param enable
+ If @true, enables the window for input. If @false, disables the window.
+
+ @return Returns @true if the window has been enabled or disabled, @false
+ if nothing was done, i.e. if the window had already
+ been in the specified state.
+
+ @see IsEnabled(), Disable(), wxRadioBox::Enable
+ */
+ virtual bool Enable(bool enable = true);
+
+ /**
+ Shows or hides the window. You may need to call Raise()
+ for a top level window if you want to bring it to top, although this is not
+ needed if Show() is called immediately after the frame creation.
+
+ Notice that the default state of newly created top level windows is hidden
+ (to allow you to create their contents without flicker) unlike for
+ all the other, not derived from wxTopLevelWindow, windows that
+ are by default created in the shown state.
+
+ @param show
+ If @true displays the window. Otherwise, hides it.
+
+ @return @true if the window has been shown or hidden or @false if nothing
+ was done because it already was in the requested state.
+
+ @see IsShown(), Hide(), wxRadioBox::Show, wxShowEvent.
+ */
+ virtual bool Show(bool show = true);
+
+ /**
+ This function shows a window, like Show(), but using a special visual
+ effect if possible.
+
+ @param effect
+ The effect to use.
+
+ @param timeout
+ The @a timeout parameter specifies the time of the animation, in
+ milliseconds. If the default value of 0 is used, the default
+ animation time for the current platform is used.
+
+ @note Currently this function is only implemented in wxMSW and wxOSX
+ (for wxTopLevelWindows only in Carbon version and for any kind of
+ windows in Cocoa) and does the same thing as Show() in the other
+ ports.
+
+ @since 2.9.0
+
+ @see HideWithEffect()
+ */
+ virtual bool ShowWithEffect(wxShowEffect effect,
+ unsigned int timeout = 0);
+
+ //@}
+
+
+ /**
+ @name Context-sensitive help functions
+ */
+ //@{
+
+ /**
+ Gets the help text to be used as context-sensitive help for this window.
+ Note that the text is actually stored by the current wxHelpProvider
+ implementation, and not in the window object itself.
+
+ @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
+ */
+ wxString GetHelpText() const;
+
+ /**
+ Sets the help text to be used as context-sensitive help for this window.
+ Note that the text is actually stored by the current wxHelpProvider
+ implementation, and not in the window object itself.
+
+ @see GetHelpText(), wxHelpProvider::AddHelp()
+ */
+ void SetHelpText(const wxString& helpText);
+
+ /**
+ Gets the help text to be used as context-sensitive help for this window.
+ This method should be overridden if the help message depends on the position
+ inside the window, otherwise GetHelpText() can be used.
+
+ @param point
+ Coordinates of the mouse at the moment of help event emission.
+ @param origin
+ Help event origin, see also wxHelpEvent::GetOrigin.
+ */
+ virtual wxString GetHelpTextAtPoint(const wxPoint& point,
+ wxHelpEvent::Origin origin) const;
+
+ /**
+ Get the associated tooltip or @NULL if none.
+ */
+ wxToolTip* GetToolTip() const;
+
+ /**
+ Get the text of the associated tooltip or empty string if none.
+ */
+ wxString GetToolTipText() const;
+
+ /**
+ Attach a tooltip to the window.
+
+ wxToolTip pointer can be @NULL in the overload taking the pointer,
+ meaning to unset any existing tooltips; however UnsetToolTip() provides
+ a more readable alternative to this operation.
+
+ Notice that these methods are always available, even if wxWidgets was
+ compiled with @c wxUSE_TOOLTIPS set to 0, but don't do anything in this
+ case.
+
+ @see GetToolTip(), wxToolTip
+ */
+ void SetToolTip(const wxString& tipString);
+
+ /**
+ @overload
+ */
+ void SetToolTip(wxToolTip* tip);
+
+ /**
+ Unset any existing tooltip.
+
+ @since 2.9.0
+
+ @see SetToolTip()
+ */
+ void UnsetToolTip();
+
+ //@}
+
+
+ /**
+ @name Popup/context menu functions
+ */
+ //@{
+
+ /**
+ This function shows a popup menu at the given position in this window and
+ returns the selected id.
+
+ It can be more convenient than the general purpose PopupMenu() function
+ for simple menus proposing a choice in a list of strings to the user.
+
+ Notice that to avoid unexpected conflicts between the (usually
+ consecutive range of) ids used by the menu passed to this function and
+ the existing EVT_UPDATE_UI() handlers, this function temporarily
+ disables UI updates for the window, so you need to manually disable
+ (or toggle or ...) any items which should be disabled in the menu
+ before showing it.
+
+ The parameter @a menu is the menu to show.
+ The parameter @a pos (or the parameters @a x and @a y) is the
+ position at which to show the menu in client coordinates.
+ It is recommended to not explicitly specify coordinates when
+ calling this method in response to mouse click, because some of
+ the ports (namely, wxGTK) can do a better job of positioning
+ the menu in that case.
+
+ @return
+ The selected menu item id or @c wxID_NONE if none selected or an
+ error occurred.
+
+ @since 2.9.0
+ */
+ int GetPopupMenuSelectionFromUser(wxMenu& menu,
+ const wxPoint& pos = wxDefaultPosition);
+
+ /**
+ @overload
+ */
+ int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
+
+ /**
+ Pops up the given menu at the specified coordinates, relative to this
+ window, and returns control when the user has dismissed the menu.
+
+ If a menu item is selected, the corresponding menu event is generated and will be
+ processed as usual. If coordinates are not specified, the current mouse
+ cursor position is used.
+
+ @a menu is the menu to pop up.
+
+ The position where the menu will appear can be specified either as a
+ wxPoint @a pos or by two integers (@a x and @a y).
+
+ @remarks Just before the menu is popped up, wxMenu::UpdateUI is called to
+ ensure that the menu items are in the correct state.
+ The menu does not get deleted by the window.
+ It is recommended to not explicitly specify coordinates when
+ calling PopupMenu in response to mouse click, because some of
+ the ports (namely, wxGTK) can do a better job of positioning
+ the menu in that case.
+
+ @see wxMenu
+ */
+ bool PopupMenu(wxMenu* menu,
+ const wxPoint& pos = wxDefaultPosition);
+
+ /**
+ @overload
+ */
+ bool PopupMenu(wxMenu* menu, int x, int y);
+
+ //@}
+
+
+ /**
+ Validator functions
+ */
+ //@{
+
+ /**
+ Returns a pointer to the current validator for the window, or @NULL if
+ there is none.
+ */
+ virtual wxValidator* GetValidator();
+
+ /**
+ Deletes the current validator (if any) and sets the window validator, having
+ called wxValidator::Clone to create a new validator of this type.
+ */
+ virtual void SetValidator(const wxValidator& validator);
+
+ /**
+ Transfers values from child controls to data areas specified by their
+ validators. Returns @false if a transfer failed.
+
+ If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
+ the method will also call TransferDataFromWindow() of all child windows.
+
+ @see TransferDataToWindow(), wxValidator, Validate()
+ */
+ virtual bool TransferDataFromWindow();
+
+ /**
+ Transfers values to child controls from data areas specified by their
+ validators.
+
+ If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
+ the method will also call TransferDataToWindow() of all child windows.
+
+ @return Returns @false if a transfer failed.
+
+ @see TransferDataFromWindow(), wxValidator, Validate()
+ */
+ virtual bool TransferDataToWindow();
+
+ /**
+ Validates the current values of the child controls using their validators.
+ If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
+ the method will also call Validate() of all child windows.
+
+ @return Returns @false if any of the validations failed.
+
+ @see TransferDataFromWindow(), TransferDataToWindow(),
+ wxValidator
+ */
+ virtual bool Validate();
+
+ //@}
+
+
+ /**
+ @name wxWindow properties functions
+ */
+ //@{
+
+ /**
+ Returns the identifier of the window.
+
+ @remarks Each window has an integer identifier. If the application
+ has not provided one (or the default wxID_ANY) a unique
+ identifier with a negative value will be generated.
+
+ @see SetId(), @ref overview_windowids
+ */
+ wxWindowID GetId() const;
+
+ /**
+ Generic way of getting a label from any window, for
+ identification purposes.
+
+ @remarks The interpretation of this function differs from class to class.
+ For frames and dialogs, the value returned is the
+ title. For buttons or static text controls, it is the
+ button text. This function can be useful for
+ meta-programs (such as testing tools or special-needs
+ access programs) which need to identify windows by name.
+ */
+ virtual wxString GetLabel() const;
+
+ /**
+ Returns the layout direction for this window,
+ Note that @c wxLayout_Default is returned if layout direction is not supported.
+ */
+ virtual wxLayoutDirection GetLayoutDirection() const;
+
+ /**
+ Mirror coordinates for RTL layout if this window uses it and if the
+ mirroring is not done automatically like Win32.
+ */
+ virtual wxCoord AdjustForLayoutDirection(wxCoord x,
+ wxCoord width,
+ wxCoord widthTotal) const;
+
+ /**
+ Returns the window's name.
+
+ @remarks This name is not guaranteed to be unique; it is up to the
+ programmer to supply an appropriate name in the window
+ constructor or via SetName().
+
+ @see SetName()
+ */
+ virtual wxString GetName() const;
+
+ /**
+ Returns the value previously passed to SetWindowVariant().
+ */
+ wxWindowVariant GetWindowVariant() const;
+
+ /**
+ Sets the identifier of the window.
+
+ @remarks Each window has an integer identifier. If the application has
+ not provided one, an identifier will be generated.
+ Normally, the identifier should be provided on creation
+ and should not be modified subsequently.
+
+ @see GetId(), @ref overview_windowids
+ */
+ void SetId(wxWindowID winid);
+
+ /**
+ Sets the window's label.
+
+ @param label
+ The window label.
+
+ @see GetLabel()
+ */
+ virtual void SetLabel(const wxString& label);
+
+ /**
+ Sets the layout direction for this window.
+ */
+ virtual void SetLayoutDirection(wxLayoutDirection dir);
+
+ /**
+ Sets the window's name.
+
+ @param name
+ A name to set for the window.
+
+ @see GetName()
+ */
+ virtual void SetName(const wxString& name);
+
+ /**
+ This function can be called under all platforms but only does anything under
+ Mac OS X 10.3+ currently. Under this system, each of the standard control can
+ exist in several sizes which correspond to the elements of wxWindowVariant enum.
+
+ By default the controls use the normal size, of course, but this function can
+ be used to change this.
+ */
+ void SetWindowVariant(wxWindowVariant variant);
+
+ /**
+ Gets the accelerator table for this window. See wxAcceleratorTable.
+ */
+ wxAcceleratorTable* GetAcceleratorTable();
+
+ /**
+ Returns the accessible object for this window, if any.
+ See also wxAccessible.
+ */
+ wxAccessible* GetAccessible();
+
+ /**
+ Sets the accelerator table for this window. See wxAcceleratorTable.
+ */
+ virtual void SetAcceleratorTable(const wxAcceleratorTable& accel);
+
+ /**
+ Sets the accessible for this window. Any existing accessible for this window
+ will be deleted first, if not identical to @e accessible.
+ See also wxAccessible.
+ */
+ void SetAccessible(wxAccessible* accessible);
+
+ //@}
+
+
+ /**
+ @name Window deletion functions
+ */
+ //@{
+
+ /**
+ This function simply generates a wxCloseEvent whose handler usually tries
+ to close the window. It doesn't close the window itself, however.
+
+ @param force
+ @false if the window's close handler should be able to veto the destruction
+ of this window, @true if it cannot.
+
+ @return @true if the event was handled and not vetoed, @false otherwise.
+
+ @remarks Close calls the close handler for the window, providing an
+ opportunity for the window to choose whether to destroy
+ the window. Usually it is only used with the top level
+ windows (wxFrame and wxDialog classes) as the others
+ are not supposed to have any special OnClose() logic.
+ The close handler should check whether the window is being deleted
+ forcibly, using wxCloseEvent::CanVeto, in which case it should
+ destroy the window using wxWindow::Destroy.
+ Note that calling Close does not guarantee that the window will
+ be destroyed; but it provides a way to simulate a manual close
+ of a window, which may or may not be implemented by destroying
+ the window. The default implementation of wxDialog::OnCloseWindow
+ does not necessarily delete the dialog, since it will simply
+ simulate an wxID_CANCEL event which is handled by the appropriate
+ button event handler and may do anything at all.
+ To guarantee that the window will be destroyed, call
+ wxWindow::Destroy instead
+
+ @see @ref overview_windowdeletion "Window Deletion Overview",
+ Destroy(), wxCloseEvent
+ */
+ bool Close(bool force = false);
+
+ /**
+ Destroys the window safely. Use this function instead of the delete operator,
+ since different window classes can be destroyed differently. Frames and dialogs
+ are not destroyed immediately when this function is called -- they are added
+ to a list of windows to be deleted on idle time, when all the window's events
+ have been processed. This prevents problems with events being sent to
+ non-existent windows.
+
+ @return @true if the window has either been successfully deleted, or it
+ has been added to the list of windows pending real deletion.
+ */
+ virtual bool Destroy();
+
+ /**
+ Returns true if this window is in process of being destroyed.
+
+ Top level windows are not deleted immediately but are rather
+ scheduled for later destruction to give them time to process any
+ pending messages; see Destroy() description.
+
+ This function returns @true if this window, or one of its parent
+ windows, is scheduled for destruction and can be useful to avoid
+ manipulating it as it's usually useless to do something with a window
+ which is on the point of disappearing anyhow.
+ */
+ bool IsBeingDeleted() const;
+
+ //@}
+
+
+
+ /**
+ @name Drag and drop functions
+ */
+ //@{
+
+ /**
+ Returns the associated drop target, which may be @NULL.
+
+ @see SetDropTarget(), @ref overview_dnd
+ */
+ virtual wxDropTarget* GetDropTarget() const;
+
+ /**
+ Associates a drop target with this window.
+ If the window already has a drop target, it is deleted.
+
+ @see GetDropTarget(), @ref overview_dnd
+ */
+ virtual void SetDropTarget(wxDropTarget* target);
+
+ /**
+ Enables or disables eligibility for drop file events (OnDropFiles).
+
+ @param accept
+ If @true, the window is eligible for drop file events.
+ If @false, the window will not accept drop file events.
+
+ @remarks Windows only until version 2.8.9, available on all platforms
+ since 2.8.10. Cannot be used together with SetDropTarget() on
+ non-Windows platforms.
+
+ @see SetDropTarget()
+ */
+ virtual void DragAcceptFiles(bool accept);
+
+ //@}
+
+
+ /**
+ @name Constraints, sizers and window layout functions
+ */
+ //@{
+
+ /**
+ Returns the sizer of which this window is a member, if any, otherwise @NULL.
+ */
+ wxSizer* GetContainingSizer() const;
+
+ /**
+ Returns the sizer associated with the window by a previous call to
+ SetSizer(), or @NULL.
+ */
+ wxSizer* GetSizer() const;
+
+ /**
+ Sets the window to have the given layout sizer.
+
+ The window will then own the object, and will take care of its deletion.
+ If an existing layout constraints object is already owned by the
+ window, it will be deleted if the @a deleteOld parameter is @true.
+
+ Note that this function will also call SetAutoLayout() implicitly with @true
+ parameter if the @a sizer is non-@NULL and @false otherwise so that the
+ sizer will be effectively used to layout the window children whenever
+ it is resized.
+
+ @param sizer
+ The sizer to set. Pass @NULL to disassociate and conditionally delete
+ the window's sizer. See below.
+ @param deleteOld
+ If @true (the default), this will delete any pre-existing sizer.
+ Pass @false if you wish to handle deleting the old sizer yourself
+ but remember to do it yourself in this case to avoid memory leaks.
+
+ @remarks SetSizer enables and disables Layout automatically.
+ */
+ void SetSizer(wxSizer* sizer, bool deleteOld = true);
+
+ /**
+ This method calls SetSizer() and then wxSizer::SetSizeHints which sets the initial
+ window size to the size needed to accommodate all sizer elements and sets the
+ size hints which, if this window is a top level one, prevent the user from
+ resizing it to be less than this minimal size.
+ */
+ void SetSizerAndFit(wxSizer* sizer, bool deleteOld = true);
+
+ /**
+ Returns a pointer to the window's layout constraints, or @NULL if there are none.
+ */
+ wxLayoutConstraints* GetConstraints() const;
+
+ /**
+ Sets the window to have the given layout constraints. The window
+ will then own the object, and will take care of its deletion.
+ If an existing layout constraints object is already owned by the
+ window, it will be deleted.
+
+ @param constraints
+ The constraints to set. Pass @NULL to disassociate and delete the window's
+ constraints.
+
+ @remarks You must call SetAutoLayout() to tell a window to use
+ the constraints automatically in OnSize; otherwise, you
+ must override OnSize and call Layout() explicitly. When
+ setting both a wxLayoutConstraints and a wxSizer, only
+ the sizer will have effect.
+ */
+ void SetConstraints(wxLayoutConstraints* constraints);
+
+ /**
+ Invokes the constraint-based layout algorithm or the sizer-based algorithm
+ for this window.
+
+ This function does not get called automatically when the window is resized
+ because lots of windows deriving from wxWindow does not need this functionality.
+ If you want to have Layout() called automatically, you should derive
+ from wxPanel (see wxPanel::Layout).
+
+ @see @ref overview_windowsizing
+ */
+ virtual bool Layout();
+
+ /**
+ Determines whether the Layout() function will be called automatically
+ when the window is resized.
+
+ This method is called implicitly by SetSizer() but if you use SetConstraints()
+ you should call it manually or otherwise the window layout won't be correctly
+ updated when its size changes.
+
+ @param autoLayout
+ Set this to @true if you wish the Layout() function to be called
+ automatically when the window is resized.
+
+ @see SetSizer(), SetConstraints()
+ */
+ void SetAutoLayout(bool autoLayout);
+
+ bool GetAutoLayout() const;
+
+ //@}
+
+
+
+ /**
+ @name Mouse functions
+ */
+ //@{
+
+ /**
+ Directs all mouse input to this window.
+ Call ReleaseMouse() to release the capture.
+
+ Note that wxWidgets maintains the stack of windows having captured the mouse
+ and when the mouse is released the capture returns to the window which had had
+ captured it previously and it is only really released if there were no previous
+ window. In particular, this means that you must release the mouse as many times
+ as you capture it, unless the window receives the wxMouseCaptureLostEvent event.
+
+ Any application which captures the mouse in the beginning of some operation
+ must handle wxMouseCaptureLostEvent and cancel this operation when it receives
+ the event. The event handler must not recapture mouse.
+
+ @see ReleaseMouse(), wxMouseCaptureLostEvent
+ */
+ void CaptureMouse();
+
+ /**
+ Returns the caret() associated with the window.
+ */
+ wxCaret* GetCaret() const;
+
+ /**
+ Return the cursor associated with this window.
+
+ @see SetCursor()
+ */
+ const wxCursor& GetCursor() const;
+
+ /**
+ Returns @true if this window has the current mouse capture.
+
+ @see CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
+ wxMouseCaptureChangedEvent
+ */
+ virtual bool HasCapture() const;
+
+ /**
+ Releases mouse input captured with CaptureMouse().
+
+ @see CaptureMouse(), HasCapture(), ReleaseMouse(),
+ wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
+ */
+ void ReleaseMouse();
+
+ /**
+ Sets the caret() associated with the window.
+ */
+ void SetCaret(wxCaret* caret);
+
+ /**
+ Sets the window's cursor. Notice that the window cursor also sets it for the
+ children of the window implicitly.
+
+ The @a cursor may be @c wxNullCursor in which case the window cursor will
+ be reset back to default.
+
+ @param cursor
+ Specifies the cursor that the window should normally display.
+
+ @see ::wxSetCursor, wxCursor
+ */
+ virtual bool SetCursor(const wxCursor& cursor);
+
+ /**
+ Moves the pointer to the given position on the window.
+
+ @note Apple Human Interface Guidelines forbid moving the mouse cursor
+ programmatically so you should avoid using this function in Mac
+ applications (and probably avoid using it under the other
+ platforms without good reason as well).
+
+ @param x
+ The new x position for the cursor.
+ @param y
+ The new y position for the cursor.
+ */
+ virtual void WarpPointer(int x, int y);
+
+ //@}
+
+
+
+
+ /**
+ @name Miscellaneous functions
+ */
+ //@{
+
+ wxHitTest HitTest(wxCoord x, wxCoord y) const;
+ wxHitTest HitTest(const wxPoint& pt) const;
+
+ /**
+ Get the window border style from the given flags: this is different from
+ simply doing flags & wxBORDER_MASK because it uses GetDefaultBorder() to
+ translate wxBORDER_DEFAULT to something reasonable
+ */
+ wxBorder GetBorder(long flags) const;
+
+ /**
+ Get border for the flags of this window
+ */
+ wxBorder GetBorder() const;
+
+
+ /**
+ Does the window-specific updating after processing the update event.
+ This function is called by UpdateWindowUI() in order to check return
+ values in the wxUpdateUIEvent and act appropriately.
+ For example, to allow frame and dialog title updating, wxWidgets
+ implements this function as follows:
+
+ @code
+ // do the window-specific processing after processing the update event
+ void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
+ {
+ if ( event.GetSetEnabled() )
+ Enable(event.GetEnabled());
+
+ if ( event.GetSetText() )
+ {
+ if ( event.GetText() != GetTitle() )
+ SetTitle(event.GetText());
+ }
+ }
+ @endcode
+ */
+ virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
+
+ /**
+ Returns the platform-specific handle of the physical window.
+ Cast it to an appropriate handle, such as @b HWND for Windows,
+ @b Widget for Motif or @b GtkWidget for GTK.
+
+ @beginWxPerlOnly
+ This method will return an integer in wxPerl.
+ @endWxPerlOnly
+ */
+ virtual WXWidget GetHandle() const;
+
+ /**
+ This method should be overridden to return @true if this window has
+ multiple pages. All standard class with multiple pages such as
+ wxNotebook, wxListbook and wxTreebook already override it to return @true
+ and user-defined classes with similar behaviour should also do so, to
+ allow the library to handle such windows appropriately.
+ */
+ virtual bool HasMultiplePages() const;
+
+ /**
+ This function is (or should be, in case of custom controls) called during
+ window creation to intelligently set up the window visual attributes, that is
+ the font and the foreground and background colours.
+
+ By "intelligently" the following is meant: by default, all windows use their
+ own @ref GetClassDefaultAttributes() default attributes.
+ However if some of the parents attributes are explicitly (that is, using
+ SetFont() and not wxWindow::SetOwnFont) changed and if the corresponding
+ attribute hadn't been explicitly set for this window itself, then this
+ window takes the same value as used by the parent.
+ In addition, if the window overrides ShouldInheritColours() to return @false,
+ the colours will not be changed no matter what and only the font might.
+
+ This rather complicated logic is necessary in order to accommodate the
+ different usage scenarios. The most common one is when all default attributes
+ are used and in this case, nothing should be inherited as in modern GUIs
+ different controls use different fonts (and colours) than their siblings so
+ they can't inherit the same value from the parent. However it was also deemed
+ desirable to allow to simply change the attributes of all children at once by
+ just changing the font or colour of their common parent, hence in this case we
+ do inherit the parents attributes.
+ */
+ virtual void InheritAttributes();
+
+ /**
+ Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
+ to the dialog via validators.
+ */
+ virtual void InitDialog();
+
+ /**
+ Returns @true if the window contents is double-buffered by the system, i.e.\ if
+ any drawing done on the window is really done on a temporary backing surface
+ and transferred to the screen all at once later.
+
+ @see wxBufferedDC
+ */
+ virtual bool IsDoubleBuffered() const;
+
+ /**
+ Turn on or off double buffering of the window if the system supports it.
+ */
+ void SetDoubleBuffered(bool on);
+
+ /**
+ Returns @true if the window is retained, @false otherwise.
+
+ @remarks Retained windows are only available on X platforms.
+ */
+ virtual bool IsRetained() const;
+
+ /**
+ Returns @true if this window is intrinsically enabled, @false otherwise,
+ i.e.\ if @ref Enable() Enable(@false) had been called. This method is
+ mostly used for wxWidgets itself, user code should normally use
+ IsEnabled() instead.
+ */
+ bool IsThisEnabled() const;
+
+ /**
+ Returns @true if the given window is a top-level one. Currently all frames and
+ dialogs are considered to be top-level windows (even if they have a parent
+ window).
+ */
+ virtual bool IsTopLevel() const;
+
+
+ /**
+ This virtual function is normally only used internally, but
+ sometimes an application may need it to implement functionality
+ that should not be disabled by an application defining an OnIdle
+ handler in a derived class.
+
+ This function may be used to do delayed painting, for example,
+ and most implementations call UpdateWindowUI()
+ in order to send update events to the window in idle time.
+ */
+ virtual void OnInternalIdle();
+
+ /**
+ Send idle event to window and all subwindows. Returns true if more idle
+ time is requested.
+ */
+ virtual bool SendIdleEvents(wxIdleEvent& event);
+
+ /**
+ Registers a system wide hotkey. Every time the user presses the hotkey
+ registered here, this window will receive a hotkey event.
+
+ It will receive the event even if the application is in the background
+ and does not have the input focus because the user is working with some
+ other application.
+
+ @param hotkeyId
+ Numeric identifier of the hotkey. For applications this must be between 0
+ and 0xBFFF. If this function is called from a shared DLL, it must be a
+ system wide unique identifier between 0xC000 and 0xFFFF.
+ This is a MSW specific detail.
+ @param modifiers
+ A bitwise combination of wxMOD_SHIFT, wxMOD_CONTROL, wxMOD_ALT
+ or wxMOD_WIN specifying the modifier keys that have to be pressed along
+ with the key.
+ @param virtualKeyCode
+ The virtual key code of the hotkey.
+
+ @return @true if the hotkey was registered successfully. @false if some
+ other application already registered a hotkey with this
+ modifier/virtualKeyCode combination.
+
+ @remarks Use EVT_HOTKEY(hotkeyId, fnc) in the event table to capture the
+ event. This function is currently only implemented
+ under Windows. It is used in the Windows CE port for
+ detecting hardware button presses.
+
+ @see UnregisterHotKey()
+ */
+ virtual bool RegisterHotKey(int hotkeyId, int modifiers,
+ int virtualKeyCode);
+
+ /**
+ Unregisters a system wide hotkey.
+
+ @param hotkeyId
+ Numeric identifier of the hotkey. Must be the same id that was passed to
+ RegisterHotKey().
+
+ @return @true if the hotkey was unregistered successfully, @false if the
+ id was invalid.
+
+ @remarks This function is currently only implemented under MSW.
+
+ @see RegisterHotKey()
+ */
+ virtual bool UnregisterHotKey(int hotkeyId);
+
+ /**
+ This function sends one or more wxUpdateUIEvent to the window.
+ The particular implementation depends on the window; for example a
+ wxToolBar will send an update UI event for each toolbar button,
+ and a wxFrame will send an update UI event for each menubar menu item.
+
+ You can call this function from your application to ensure that your
+ UI is up-to-date at this point (as far as your wxUpdateUIEvent handlers
+ are concerned). This may be necessary if you have called
+ wxUpdateUIEvent::SetMode() or wxUpdateUIEvent::SetUpdateInterval() to limit
+ the overhead that wxWidgets incurs by sending update UI events in idle time.
+ @a flags should be a bitlist of one or more of the ::wxUpdateUI enumeration.
+
+ If you are calling this function from an OnInternalIdle or OnIdle
+ function, make sure you pass the wxUPDATE_UI_FROMIDLE flag, since
+ this tells the window to only update the UI elements that need
+ to be updated in idle time. Some windows update their elements
+ only when necessary, for example when a menu is about to be shown.
+ The following is an example of how to call UpdateWindowUI from
+ an idle function.
+
+ @code
+ void MyWindow::OnInternalIdle()
+ {
+ if (wxUpdateUIEvent::CanUpdate(this))
+ UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
+ }
+ @endcode
- /**
- Deletes the current validator (if any) and sets the window validator, having
- called wxValidator::Clone to create a new validator of this type.
+ @see wxUpdateUIEvent, DoUpdateWindowUI(), OnInternalIdle()
*/
- virtual void SetValidator(const wxValidator& validator);
+ virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE);
- //@{
- /**
- Sets the virtual size of the window in pixels.
- */
- void SetVirtualSize(int width, int height);
- void SetVirtualSize(const wxSize& size);
//@}
- /**
- Identical to SetWindowStyleFlag().
- */
- void SetWindowStyle(long style);
-
- /**
- Sets the style of the window. Please note that some styles cannot be changed
- after the window creation and that Refresh() might need to be be called
- after changing the others for the change to take place immediately.
-
- See @ref overview_windowstyles "Window styles" for more information about flags.
- @see GetWindowStyleFlag()
- */
- virtual void SetWindowStyleFlag(long style);
+ // NOTE: static functions must have their own group or Doxygen will screw
+ // up the ordering of the member groups
/**
- This function can be called under all platforms but only does anything under
- Mac OS X 10.3+ currently. Under this system, each of the standard control can
- exist in several sizes which correspond to the elements of wxWindowVariant enum.
-
- By default the controls use the normal size, of course, but this function can
- be used to change this.
+ @name Miscellaneous static functions
*/
- void SetWindowVariant(wxWindowVariant variant);
+ //@{
/**
- Return @true from here to allow the colours of this window to be changed by
- InheritAttributes(), returning @false forbids inheriting them from the parent window.
+ Returns the default font and colours which are used by the control.
- The base class version returns @false, but this method is overridden in
- wxControl where it returns @true.
- */
- virtual bool ShouldInheritColours();
+ This is useful if you want to use the same font or colour in your own control
+ as in a standard control -- which is a much better idea than hard coding specific
+ colours or fonts which might look completely out of place on the users
+ system, especially if it uses themes.
- /**
- Shows or hides the window. You may need to call Raise()
- for a top level window if you want to bring it to top, although this is not
- needed if Show() is called immediately after the frame creation.
+ The @a variant parameter is only relevant under Mac currently and is
+ ignore under other platforms. Under Mac, it will change the size of the
+ returned font. See SetWindowVariant() for more about this.
- @param show
- If @true displays the window. Otherwise, hides it.
+ This static method is "overridden" in many derived classes and so calling,
+ for example, wxButton::GetClassDefaultAttributes() will typically
+ return the values appropriate for a button which will be normally different
+ from those returned by, say, wxListCtrl::GetClassDefaultAttributes().
- @return @true if the window has been shown or hidden or @false if nothing
- was done because it already was in the requested state.
+ The @c wxVisualAttributes structure has at least the fields
+ @c font, @c colFg and @c colBg. All of them may be invalid
+ if it was not possible to determine the default control appearance or,
+ especially for the background colour, if the field doesn't make sense as is
+ the case for @c colBg for the controls with themed background.
- @see IsShown(), Hide(), wxRadioBox::Show, wxShowEvent.
+ @see InheritAttributes()
*/
- virtual bool Show(bool show = true);
+ static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
/**
- This function shows a window, like Show(), but using a special visual
- effect if possible.
-
- @param effect
- The effect to use.
-
- @param timeout
- The @a timeout parameter specifies the time of the animation, in
- milliseconds. If the default value of 0 is used, the default
- animation time for the current platform is used.
-
- @note Currently this function is only implemented in wxMSW and does the
- same thing as Show() in the other ports.
+ Finds the window or control which currently has the keyboard focus.
- @since 2.9.0
+ @remarks Note that this is a static function, so it can be called without
+ needing a wxWindow pointer.
- @see HideWithEffect()
+ @see SetFocus(), HasFocus()
*/
- virtual bool ShowWithEffect(wxShowEffect effect,
- unsigned timeout = 0);
+ static wxWindow* FindFocus();
/**
- Reenables window updating after a previous call to Freeze().
+ Find the first window with the given @e id.
- To really thaw the control, it must be called exactly the same number
- of times as Freeze().
+ If @a parent is @NULL, the search will start from all top-level frames
+ and dialog boxes; if non-@NULL, the search will be limited to the given
+ window hierarchy.
+ The search is recursive in both cases.
- If the window has any children, they are recursively thawn too.
+ @see FindWindow()
- @see wxWindowUpdateLocker, Freeze(), IsFrozen()
+ @return Window with the given @a id or @NULL if not found.
*/
- virtual void Thaw();
+ static wxWindow* FindWindowById(long id, const wxWindow* parent = 0);
/**
- Turns the given @a flag on if it's currently turned off and vice versa.
- This function cannot be used if the value of the flag is 0 (which is often
- the case for default flags).
+ Find a window by its label.
- Also, please notice that not all styles can be changed after the control
- creation.
+ Depending on the type of window, the label may be a window title
+ or panel item label. If @a parent is @NULL, the search will start from all
+ top-level frames and dialog boxes; if non-@NULL, the search will be
+ limited to the given window hierarchy.
+ The search is recursive in both cases.
- @return Returns @true if the style was turned on by this function, @false
- if it was switched off.
+ @see FindWindow()
- @see SetWindowStyleFlag(), HasFlag()
+ @return Window with the given @a label or @NULL if not found.
*/
- bool ToggleWindowStyle(int flag);
+ static wxWindow* FindWindowByLabel(const wxString& label,
+ const wxWindow* parent = 0);
/**
- Transfers values from child controls to data areas specified by their
- validators. Returns @false if a transfer failed.
+ Find a window by its name (as given in a window constructor or Create()
+ function call).
- If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
- the method will also call TransferDataFromWindow() of all child windows.
+ If @a parent is @NULL, the search will start from all top-level frames
+ and dialog boxes; if non-@NULL, the search will be limited to the given
+ window hierarchy.
- @see TransferDataToWindow(), wxValidator, Validate()
- */
- virtual bool TransferDataFromWindow();
+ The search is recursive in both cases. If no window with such name is found,
+ FindWindowByLabel() is called.
- /**
- Transfers values to child controls from data areas specified by their
- validators.
+ @see FindWindow()
- If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
- the method will also call TransferDataToWindow() of all child windows.
+ @return Window with the given @a name or @NULL if not found.
+ */
+ static wxWindow* FindWindowByName(const wxString& name,
+ const wxWindow* parent = 0);
- @return Returns @false if a transfer failed.
+ /**
+ Returns the currently captured window.
- @see TransferDataFromWindow(), wxValidator, Validate()
+ @see HasCapture(), CaptureMouse(), ReleaseMouse(),
+ wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
*/
- virtual bool TransferDataToWindow();
+ static wxWindow* GetCapture();
/**
- Unregisters a system wide hotkey.
+ Create a new ID or range of IDs that are not currently in use.
+ The IDs will be reserved until assigned to a wxWindow ID
+ or unreserved with UnreserveControlId().
- @param hotkeyId
- Numeric identifier of the hotkey. Must be the same id that was passed to
- RegisterHotKey().
+ See @ref overview_windowids for more information.
- @return @true if the hotkey was unregistered successfully, @false if the
- id was invalid.
+ @param count
+ The number of sequential IDs to reserve.
- @remarks This function is currently only implemented under MSW.
+ @return Returns the ID or the first ID of the range (i.e. the most negative),
+ or wxID_NONE if the specified number of identifiers couldn't be allocated.
- @see RegisterHotKey()
+ @see UnreserveControlId(), wxIdManager,
+ @ref overview_windowids
*/
- bool UnregisterHotKey(int hotkeyId);
+ static wxWindowID NewControlId(int count = 1);
/**
Unreserve an ID or range of IDs that was reserved by NewControlId().
*/
static void UnreserveControlId(wxWindowID id, int count = 1);
+ //@}
+
+
+
+protected:
+
/**
- Unset any existing tooltip.
+ Centres the window.
- @since 2.9.0
+ @param direction
+ Specifies the direction for the centring. May be wxHORIZONTAL,
+ wxVERTICAL or wxBOTH. It may also include the wxCENTRE_ON_SCREEN
+ flag.
- @see SetToolTip()
- */
- void UnsetToolTip();
+ @remarks This function is not meant to be called directly by user code,
+ but via Centre, Center, CentreOnParent, or CenterOnParent.
+ This function can be overridden to fine-tune centring behaviour.
+ */
+ virtual void DoCentre(int direction);
/**
- Calling this method immediately repaints the invalidated area of the window and
- all of its children recursively while this would usually only happen when the
- flow of control returns to the event loop.
+ Implementation of GetBestSize() that can be overridden.
- Notice that this function doesn't invalidate any area of the window so
- nothing happens if nothing has been invalidated (i.e. marked as requiring
- a redraw). Use Refresh() first if you want to immediately redraw the
- window unconditionally.
+ Notice that it is usually more convenient to override
+ DoGetBestClientSize() rather than this method itself as you need to
+ explicitly account for the window borders size if you do the latter.
+
+ The default implementation of this function is designed for use in container
+ windows, such as wxPanel, and works something like this:
+ -# If the window has a sizer then it is used to calculate the best size.
+ -# Otherwise if the window has layout constraints then those are used to
+ calculate the best size.
+ -# Otherwise if the window has children then the best size is set to be large
+ enough to show all the children.
+ -# Otherwise if there are no children then the window's minimal size will be
+ used as its best size.
+ -# Otherwise if there is no minimal size set, then the current size is used
+ for the best size.
+
+ @see @ref overview_windowsizing
*/
- virtual void Update();
+ virtual wxSize DoGetBestSize() const;
/**
- This function sends one or more wxUpdateUIEvent to the window.
- The particular implementation depends on the window; for example a
- wxToolBar will send an update UI event for each toolbar button,
- and a wxFrame will send an update UI event for each menubar menu item.
+ Override this method to return the best size for a custom control.
- You can call this function from your application to ensure that your
- UI is up-to-date at this point (as far as your wxUpdateUIEvent handlers
- are concerned). This may be necessary if you have called
- wxUpdateUIEvent::SetMode() or wxUpdateUIEvent::SetUpdateInterval() to limit
- the overhead that wxWidgets incurs by sending update UI events in idle time.
- @a flags should be a bitlist of one or more of the wxUpdateUI enumeration.
+ A typical implementation of this method should compute the minimal size
+ needed to fully display the control contents taking into account the
+ current font size.
- If you are calling this function from an OnInternalIdle or OnIdle
- function, make sure you pass the wxUPDATE_UI_FROMIDLE flag, since
- this tells the window to only update the UI elements that need
- to be updated in idle time. Some windows update their elements
- only when necessary, for example when a menu is about to be shown.
- The following is an example of how to call UpdateWindowUI from
- an idle function.
+ The default implementation simply returns ::wxDefaultSize and
+ GetBestSize() returns an arbitrary hardcoded size for the window, so
+ you must override it when implementing a custom window class.
- @code
- void MyWindow::OnInternalIdle()
- {
- if (wxUpdateUIEvent::CanUpdate(this))
- UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
- }
- @endcode
+ Notice that the best size returned by this function is cached
+ internally, so if anything that results in the best size changing (e.g.
+ change to the control contents) happens, you need to call
+ InvalidateBestSize() to notify wxWidgets about it.
- @see wxUpdateUIEvent, DoUpdateWindowUI(), OnInternalIdle()
- */
- virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE);
+ @see @ref overview_windowsizing
+
+ @since 2.9.0
+ */
+ virtual wxSize DoGetBestClientSize() const;
/**
- Validates the current values of the child controls using their validators.
- If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
- the method will also call Validate() of all child windows.
+ Override this method to implement height-for-width best size
+ calculation.
- @return Returns @false if any of the validations failed.
+ Return the height needed to fully display the control contents if its
+ width is fixed to the given value. Custom classes implementing
+ wrapping should override this method and return the height
+ corresponding to the number of lines needed to lay out the control
+ contents at this width.
- @see TransferDataFromWindow(), TransferDataToWindow(),
- wxValidator
+ Currently this method is not used by wxWidgets yet, however it is
+ planned that it will be used by the new sizer classes implementing
+ height-for-width layout strategy in the future.
+
+ Notice that implementing this method or even implementing both it and
+ DoGetBestClientWidth() doesn't replace overriding DoGetBestClientSize(),
+ i.e. you still need to implement the latter as well in order to provide
+ the best size when neither width nor height are constrained.
+
+ By default returns ::wxDefaultCoord meaning that the vertical component
+ of DoGetBestClientSize() return value should be used.
+
+ @since 2.9.4
+ */
+ virtual int DoGetBestClientHeight(int width) const;
+
+ /**
+ Override this method to implement width-for-height best size
+ calculation.
+
+ This method is exactly the same as DoGetBestClientHeight() except that
+ it determines the width assuming the height is fixed instead of vice
+ versa.
+
+ @since 2.9.4
+ */
+ virtual int DoGetBestClientWidth(int height) const;
+
+ /**
+ Sets the initial window size if none is given (i.e.\ at least one of the
+ components of the size passed to ctor/Create() is wxDefaultCoord).
+ @deprecated Use SetInitialSize() instead.
*/
- virtual bool Validate();
+ virtual void SetInitialBestSize(const wxSize& size);
/**
- Moves the pointer to the given position on the window.
+ Generate wxWindowDestroyEvent for this window.
- @note This function is not supported under Mac because Apple Human
- Interface Guidelines forbid moving the mouse cursor programmatically.
+ This is called by the window itself when it is being destroyed and
+ usually there is no need to call it but see wxWindowDestroyEvent for
+ explanations of when you might want to do it.
+ */
+ void SendDestroyEvent();
- @param x
- The new x position for the cursor.
- @param y
- The new y position for the cursor.
+ /**
+ This function is public in wxEvtHandler but protected in wxWindow
+ because for wxWindows you should always call ProcessEvent() on the
+ pointer returned by GetEventHandler() and not on the wxWindow object
+ itself.
+
+ For convenience, a ProcessWindowEvent() method is provided as a synonym
+ for @code GetEventHandler()->ProcessEvent() @endcode
+
+ Note that it's still possible to call these functions directly on the
+ wxWindow object (e.g. casting it to wxEvtHandler) but doing that will
+ create subtle bugs when windows with event handlers pushed on them are
+ involved.
+
+ This holds also for all other wxEvtHandler functions.
+ */
+ virtual bool ProcessEvent(wxEvent& event);
+
+ //@{
+ /**
+ See ProcessEvent() for more info about why you shouldn't use this function
+ and the reason for making this function protected in wxWindow.
*/
- void WarpPointer(int x, int y);
+ bool SafelyProcessEvent(wxEvent& event);
+ virtual void QueueEvent(wxEvent *event);
+ virtual void AddPendingEvent(const wxEvent& event);
+ void ProcessPendingEvents();
+ bool ProcessThreadEvent(const wxEvent& event);
+ //@}
};
// Global functions/macros
// ============================================================================
-/** @ingroup group_funcmacro_misc */
+/** @addtogroup group_funcmacro_misc */
//@{
/**
projects / wxWidgets.git / blobdiff