// 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_EXPAND
};
+
+
+/**
+ 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
{
*/
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
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;
+ /**
+ Returns @true if the window (or in case of composite controls, its main
+ child window) has focus.
+
+ @see FindFocus()
+ */
+ virtual bool HasFocus() const;
+
+ /**
+ 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);
+
+ /**
+ This sets the window to receive keyboard input.
+
+ @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
+ wxPanel::SetFocusIgnoringChildren
+ */
+ virtual void SetFocus();
+
+ /**
+ 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).
+
+ 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();
+
+ //@}
+
+
+ /**
+ @name Child management functions
+ */
+ //@{
+
/**
Adds a child window. This is called automatically by window creation
functions so should not be required by the application programmer.
virtual void AddChild(wxWindow* child);
/**
- 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.
-
- @since 2.9.0
+ Destroys all children of a window. Called automatically by the destructor.
+ */
+ bool DestroyChildren();
- @param hflag
- Whether the horizontal scroll bar should always be visible.
- @param vflag
- Whether the vertical scroll bar should always be visible.
+ /**
+ Find a child of this window, by @a id.
+ May return @a this if it matches itself.
+ */
+ wxWindow* FindWindow(long id) const;
- @remarks This function is currently only implemented under Mac/Carbon.
+ /**
+ Find a child of this window, by name.
+ May return @a this if it matches itself.
*/
- virtual void AlwaysShowScrollbars(bool hflag = true, bool vflag = true);
+ wxWindow* FindWindow(const wxString& name) const;
/**
- Sets the cached best size value.
+ 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 CacheBestSize(const wxSize& size) const;
+ wxWindowList& GetChildren();
/**
- 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.
+ @overload
*/
- virtual bool CanSetTransparent();
+ const wxWindowList& GetChildren() const;
/**
- Directs all mouse input to this window.
- Call ReleaseMouse() to release the capture.
+ Removes a child window.
- 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.
+ 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.
- 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.
+ @param child
+ Child window to remove.
+ */
+ virtual void RemoveChild(wxWindow* child);
- @see ReleaseMouse(), wxMouseCaptureLostEvent
+ //@}
+
+
+ /**
+ @name Sibling and parent management functions
*/
- void CaptureMouse();
+ //@{
/**
- A synonym for Centre().
+ Returns the grandparent of a window, or @NULL if there isn't one.
*/
- void Center(int dir = wxBOTH);
+ wxWindow* GetGrandParent() const;
/**
- A synonym for CentreOnParent().
+ 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 GetPrevSibling()
*/
- void CenterOnParent(int dir = wxBOTH);
+ wxWindow* GetNextSibling() const;
/**
- Centres the window.
+ Returns the parent of the window, or @NULL if there is no parent.
+ */
+ wxWindow* GetParent() const;
- @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.
+ /**
+ Returns the previous window before this one among the parent's children or @c
+ @NULL if this window is the first child.
- @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.
+ @since 2.8.8
- @see Center()
+ @see GetNextSibling()
*/
- void Centre(int direction = wxBOTH);
+ wxWindow* GetPrevSibling() const;
/**
- Centres the window on its parent. This is a more readable synonym for Centre().
+ Check if the specified window is a descendant of this one.
- @param direction
- Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
- or wxBOTH.
+ Returns @true if the window is a descendant (i.e. a child or
+ grand-child or grand-grand-child or ...) of this one.
- @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().
+ 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 wxTopLevelWindow::CentreOnScreen
+ @param win Any window, possible @NULL (@false is always returned then).
+
+ @since 2.9.4
+ */
+ bool IsDescendant(wxWindowBase* win) 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.
+
+ Notice that currently you need to explicitly call
+ wxNotebook::RemovePage() before reparenting a notebook page.
+
+ @param newParent
+ New parent.
*/
- void CentreOnParent(int direction = wxBOTH);
+ virtual bool Reparent(wxWindow* newParent);
+
+ //@}
+
/**
- Clears the window by filling it with the current background colour. Does not
- cause an erase background event to be generated.
+ @name Scrolling and scrollbars functions
+
+ Note that these methods don't work with native controls which don't use
+ wxWidgets scrolling framework (i.e. don't derive from wxScrolledWindow).
*/
- virtual void ClearBackground();
+ //@{
/**
- Converts to screen coordinates from coordinates relative to this window.
+ 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.
- @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.
+ @since 2.9.0
- @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 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.
*/
- void ClientToScreen(int* x, int* y) const;
+ virtual void AlwaysShowScrollbars(bool hflag = true, bool vflag = true);
/**
- Converts to screen coordinates from coordinates relative to this window.
+ Returns the built-in scrollbar position.
- @param pt
- The client position for the second form of the function.
+ @see SetScrollbar()
*/
- wxPoint ClientToScreen(const wxPoint& pt) const;
+ virtual int GetScrollPos(int orientation) const;
/**
- Converts client area size @a size to corresponding window size.
+ Returns the built-in scrollbar range.
- 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.
+ @see SetScrollbar()
+ */
+ virtual int GetScrollRange(int orientation) const;
- @since 2.8.8
+ /**
+ Returns the built-in scrollbar thumb size.
- @see WindowToClientSize()
+ @see SetScrollbar()
*/
- virtual wxSize ClientToWindowSize(const wxSize& size) const;
+ virtual int GetScrollThumb(int orientation) 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.
-
- 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 @true if this window can have a scroll bar in this orientation.
- @since 2.8.8
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
- @see ClientToWindowSize()
+ @since 2.9.1
*/
- virtual wxSize WindowToClientSize(const wxSize& size) const;
+ bool CanScroll(int orient) const;
/**
- This function simply generates a wxCloseEvent whose handler usually tries
- to close the window. It doesn't close the window itself, however.
+ Returns @true if this window currently has a scroll bar for this
+ orientation.
- @param force
- @false if the window's close handler should be able to veto the destruction
- of this window, @true if it cannot.
+ 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.
- @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
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+ */
+ bool HasScrollbar(int orient) const;
- @see @ref overview_windowdeletion "Window Deletion Overview",
- Destroy(), wxCloseEvent
+ /**
+ Return whether a scrollbar is always shown.
+
+ @param orient
+ Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+
+ @see AlwaysShowScrollbars()
*/
- bool Close(bool force = false);
+ virtual bool IsScrollbarAlwaysShown(int orient) const;
- //@{
/**
- Converts a point or size from dialog units to pixels.
+ Scrolls the window by the given number of lines down (if @a lines is
+ positive) or up.
- 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.
+ @return Returns @true if the window was scrolled, @false if it was already
+ on top/bottom and nothing was done.
- @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
+ @remarks This function is currently only implemented under MSW and
+ wxTextCtrl under wxGTK (it also works for wxScrolled classes
+ under all platforms).
- @see ConvertPixelsToDialog()
+ @see ScrollPages()
+ */
+ virtual bool ScrollLines(int lines);
+
+ /**
+ 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.
+
+ @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)
+
+ @remarks Note that you can often use wxScrolled instead of using this
+ function directly.
+ */
+ virtual void ScrollWindow(int dx, int dy,
+ const wxRect* rect = NULL);
+
+ /**
+ Same as #ScrollLines (-1).
+ */
+ bool LineUp();
+
+ /**
+ Same as #ScrollLines (1).
*/
- wxPoint ConvertDialogToPixels(const wxPoint& pt);
- wxSize ConvertDialogToPixels(const wxSize& sz);
+ bool LineDown();
+
+ /**
+ Same as #ScrollPages (-1).
+ */
+ bool PageUp();
+
+ /**
+ Same as #ScrollPages (1).
+ */
+ bool PageDown();
+
+ /**
+ Sets the position of one of the built-in scrollbars.
+
+ @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.
+
+ @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 SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
+ wxScrolled
+ */
+ virtual void SetScrollPos(int orientation, int pos,
+ bool refresh = true);
+
+ /**
+ Sets the scrollbar properties of a built-in scrollbar.
+
+ @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.
+
+ @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_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
+ */
+ virtual void SetScrollbar(int orientation, int position,
+ int thumbSize, int range,
+ bool refresh = true);
//@}
+
+ /**
+ @name Sizing functions
+
+ See also the protected functions DoGetBestSize() and
+ DoGetBestClientSize().
+ */
//@{
+
/**
- Converts a point or size from pixels to dialog units.
+ Sets the cached best size value.
- 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.
+ @see GetBestSize()
+ */
+ void CacheBestSize(const wxSize& size) const;
- @remarks Dialog units are used for maintaining a dialog's proportions
- even if the font changes.
+ /**
+ Converts client area size @a size to corresponding window size.
- @see ConvertDialogToPixels()
+ 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()
+ */
+ virtual wxSize ClientToWindowSize(const wxSize& size) 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.
+
+ 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()
+ */
+ virtual wxSize WindowToClientSize(const wxSize& size) const;
+
+ /**
+ 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:
+
+ @code
+ window->SetClientSize(child->GetSize());
+ @endcode
+
+ instead of calling Fit().
+
+ @see @ref overview_windowsizing
+ */
+ virtual void Fit();
+
+ /**
+ Similar to Fit(), but sizes the interior (virtual) size of a window.
+
+ 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 void FitInside();
+
+ /**
+ This functions returns the best acceptable minimal size for the window.
+
+ For example, for a static control, it will be the minimal size such that the
+ 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().
+
+ 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 CacheBestSize(), @ref overview_windowsizing
+ */
+ wxSize GetBestSize() const;
+
+ /**
+ Returns the best height needed by this window if it had the given width.
+
+ @see DoGetBestClientHeight()
+
+ @since 2.9.4
+ */
+ int GetBestHeight(int width) const;
+
+ /**
+ Returns the best width needed by this window if it had the given height.
+
+ @see DoGetBestClientWidth()
+
+ @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).
+
+ @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;
+
+ /**
+ @overload
+ */
+ 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
+ amount of space to allocate for the widget.
+
+ This is the method called by a wxSizer when it queries the size
+ of a window or control.
+
+ @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
+ */
+ virtual wxSize GetEffectiveMinSize() const;
+
+ /**
+ Returns the maximum size of window's client area.
+
+ 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
+ SetClientSize().
+
+ @see GetMaxSize(), @ref overview_windowsizing
+ */
+ 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(), @ref overview_windowsizing
+ */
+ virtual wxSize GetMaxSize() const;
+
+ /**
+ Returns the minimum size of window's client area, an indication to the sizer
+ layout mechanism that this is the minimum required size of its client area.
+
+ It normally just returns the value set by SetMinClientSize(), but it can be
+ overridden to do the calculation on demand.
+
+ @see GetMinSize(), @ref overview_windowsizing
+ */
+ virtual wxSize GetMinClientSize() const;
+
+ /**
+ Returns the minimum size of the window, an indication to the sizer layout
+ mechanism that this is the minimum required size.
+
+ This method normally just returns the value set by SetMinSize(), but it
+ can be overridden to do the calculation on demand.
+
+ @see GetMinClientSize(), @ref overview_windowsizing
+ */
+ virtual wxSize GetMinSize() const;
+
+ int GetMinWidth() const;
+ int GetMinHeight() const;
+ int GetMaxWidth() const;
+ int GetMaxHeight() const;
+
+ /**
+ Returns the size of the entire window in pixels, including title bar, border,
+ scrollbars, etc.
+
+ 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.
+
+ @param width
+ Receives the window width.
+ @param height
+ Receives the window height.
+
+ @beginWxPerlOnly
+ In wxPerl this method is implemented as GetSizeWH() returning
+ a 2-element list (width, height).
+ @endWxPerlOnly
+
+ @see GetClientSize(), GetVirtualSize(), @ref overview_windowsizing
+ */
+ void GetSize(int* width, int* height) const;
+
+ /**
+ See the GetSize(int*,int*) overload for more info.
+ */
+ wxSize GetSize() const;
+
+ /**
+ 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 @ref overview_windowsizing
+ */
+ wxSize GetVirtualSize() const;
+
+ /**
+ Like the other GetVirtualSize() overload but uses pointers instead.
+
+ @param width
+ Receives the window virtual width.
+ @param height
+ Receives the window virtual height.
*/
- wxPoint ConvertPixelsToDialog(const wxPoint& pt);
- wxSize ConvertPixelsToDialog(const wxSize& sz);
- //@}
+ void GetVirtualSize(int* width, int* height) const;
/**
- 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.
+ Return the largest of ClientSize and BestSize (as determined
+ by a sizer, interior children, or other means)
*/
- virtual bool Destroy();
+ virtual wxSize GetBestVirtualSize() const;
/**
- Destroys all children of a window. Called automatically by the destructor.
+ Returns the size of the left/right and top/bottom borders of this window in x
+ and y components of the result respectively.
*/
- bool DestroyChildren();
+ virtual wxSize GetWindowBorderSize() const;
/**
- Returns true if this window is in process of being destroyed.
+ 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.
- 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.
+ @see CacheBestSize()
+ */
+ void InvalidateBestSize();
- 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.
+ /**
+ Posts a size event to the window.
+
+ This is the same as SendSizeEvent() with @c wxSEND_EVENT_POST argument.
*/
- bool IsBeingDeleted() const;
+ void PostSizeEvent();
/**
- Disables the window. Same as @ref Enable() Enable(@false).
+ Posts a size event to the parent of this window.
- @return Returns @true if the window has been disabled, @false if it had
- been already disabled before the call to this function.
- */
- bool Disable();
+ This is the same as SendSizeEventToParent() with @c wxSEND_EVENT_POST
+ argument.
+ */
+ void PostSizeEventToParent();
/**
- 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:
+ This function sends a dummy @ref wxSizeEvent "size event" to
+ the window allowing it to re-layout its children positions.
- @code
- // do the window-specific processing after processing the update event
- void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
- {
- if ( event.GetSetEnabled() )
- Enable(event.GetEnabled());
+ 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 ( event.GetSetText() )
- {
- if ( event.GetText() != GetTitle() )
- SetTitle(event.GetText());
- }
- }
- @endcode
+ 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 flags
+ May include @c wxSEND_EVENT_POST. Default value is 0.
*/
- virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
+ virtual void SendSizeEvent(int flags = 0);
/**
- Enables or disables eligibility for drop file events (OnDropFiles).
+ Safe wrapper for GetParent()->SendSizeEvent().
- @param accept
- If @true, the window is eligible for drop file events.
- If @false, the window will not accept drop file events.
+ 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).
- @remarks Windows only.
- */
- virtual void DragAcceptFiles(bool accept);
+ @see PostSizeEventToParent()
- /**
- 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 flags
+ See description of this parameter in SendSizeEvent() documentation.
+ */
+ void SendSizeEventToParent(int flags = 0);
- @param enable
- If @true, enables the window for input. If @false, disables the window.
+ /**
+ This sets the size of the window client area in pixels.
- @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.
+ 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.
- @see IsEnabled(), Disable(), wxRadioBox::Enable
+ @see @ref overview_windowsizing
*/
- virtual bool Enable(bool enable = true);
+ void SetClientSize(int width, int height);
/**
- Finds the window or control which currently has the keyboard focus.
-
- @remarks Note that this is a static function, so it can be called without
- needing a wxWindow pointer.
-
- @see SetFocus(), HasFocus()
+ @overload
*/
- static wxWindow* FindFocus();
+ void SetClientSize(const wxSize& size);
/**
- Find a child of this window, by @a id.
- May return @a this if it matches itself.
+ @overload
*/
- wxWindow* FindWindow(long id) const;
+ void SetClientSize(const wxRect& rect);
/**
- Find a child of this window, by name.
- May return @a this if it matches itself.
+ 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.
*/
- wxWindow* FindWindow(const wxString& name) const;
+ void SetContainingSizer(wxSizer* sizer);
/**
- Find the first window with the given @e id.
+ A @e smart SetSize that will fill in default size components with the
+ window's @e best size values.
- 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.
+ 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 FindWindow()
+ 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
*/
- static wxWindow* FindWindowById(long id, wxWindow* parent = NULL);
+ void SetInitialSize(const wxSize& size = wxDefaultSize);
/**
- Find a window by its label.
+ 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.
- 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.
+ Note that this method is just a shortcut for:
+ @code
+ SetMaxSize(ClientToWindowSize(size));
+ @endcode
- @see FindWindow()
+ @see SetMaxSize(), @ref overview_windowsizing
*/
- static wxWindow* FindWindowByLabel(const wxString& label,
- wxWindow* parent = NULL);
+ virtual void SetMaxClientSize(const wxSize& size);
/**
- Find a window by its name (as given in a window constructor or @b Create
- function call).
-
- 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 no window with such name is found,
- FindWindowByLabel() is called.
+ Sets the maximum size of the window, to indicate to the sizer layout mechanism
+ that this is the maximum possible size.
- @see FindWindow()
+ @see SetMaxClientSize(), @ref overview_windowsizing
*/
- static wxWindow* FindWindowByName(const wxString& name,
- wxWindow* parent = NULL);
+ virtual void SetMaxSize(const wxSize& size);
/**
- Sizes the window so that it fits around its subwindows.
+ 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 won't do anything if there are no subwindows and will only really
- work correctly if sizers are used for the subwindows layout.
+ You may need to call this if you change the window size after
+ construction and before adding to its parent sizer.
- 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:
+ Note, that just as with SetMinSize(), calling this method doesn't
+ prevent the program from explicitly making the window smaller than the
+ specified size.
+ Note that this method is just a shortcut for:
@code
- window->SetClientSize(child->GetSize());
+ SetMinSize(ClientToWindowSize(size));
@endcode
- instead of calling Fit().
-
- @see @ref overview_windowsizing
+ @see SetMinSize(), @ref overview_windowsizing
*/
- virtual void Fit();
+ virtual void SetMinClientSize(const wxSize& size);
/**
- Similar to Fit(), but sizes the interior (virtual) size of a window.
+ Sets the minimum size of the window, to indicate to the sizer layout
+ mechanism that this is the minimum required size.
- 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 void FitInside();
+ You may need to call this if you change the window size after
+ construction and before adding to its parent sizer.
- /**
- Freezes the window or, in other words, prevents any updates from taking
- place on screen, the window is not redrawn at all.
+ 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.
- 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.
+ @see SetMinClientSize(), @ref overview_windowsizing
+ */
+ virtual void SetMinSize(const wxSize& size);
- If the window has any children, they are recursively frozen too.
+ /**
+ Sets the size of the window in pixels.
- 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.
+ @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).
- @see wxWindowUpdateLocker, Thaw(), IsFrozen()
+ @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.
+
+ @see Move(), @ref overview_windowsizing
*/
- void Freeze();
+ void SetSize(int x, int y, int width, int height,
+ int sizeFlags = wxSIZE_AUTO);
/**
- Gets the accelerator table for this window. See wxAcceleratorTable.
+ Sets the size of the window in pixels.
+ The size is specified using a wxRect, wxSize or by a couple of @c int objects.
+
+ @remarks This form must be used with non-default width and height values.
+
+ @see Move(), @ref overview_windowsizing
*/
- wxAcceleratorTable* GetAcceleratorTable();
+ void SetSize(const wxRect& rect);
/**
- Returns the accessible object for this window, if any.
- See also wxAccessible.
+ @overload
*/
- wxAccessible* GetAccessible();
+ void SetSize(const wxSize& size);
/**
- @deprecated
- This method is deprecated, use GetEffectiveMinSize() instead.
+ @overload
*/
- wxSize GetAdjustedBestSize() const;
+ void SetSize(int width, int height);
/**
- Returns the background colour of the window.
+ 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 SetBackgroundColour(), SetForegroundColour(), GetForegroundColour()
+ @see wxTopLevelWindow::SetSizeHints, @ref overview_windowsizing
*/
- wxColour GetBackgroundColour() 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 the background style of the window.
- The background style can be one of the wxBackgroundStyle.
+ Sets the virtual size of the window in pixels.
- @see SetBackgroundColour(), GetForegroundColour(),
- SetBackgroundStyle(), SetTransparent()
+ @see @ref overview_windowsizing
*/
- virtual wxBackgroundStyle GetBackgroundStyle() const;
+ void SetVirtualSize(int width, int height);
/**
- This functions returns the best acceptable minimal size for the window.
-
- For example, for a static control, it will be the minimal size such that the
- 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().
+ @overload
*/
- wxSize GetBestSize() const;
+ void SetVirtualSize(const wxSize& size);
- /**
- Returns the currently captured window.
+ //@}
- @see HasCapture(), CaptureMouse(), ReleaseMouse(),
- wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
- */
- static wxWindow* GetCapture();
/**
- Returns the caret() associated with the window.
+ @name Positioning functions
*/
- wxCaret* GetCaret() const;
+ //@{
/**
- Returns the character height for this window.
+ A synonym for Centre().
*/
- virtual int GetCharHeight() const;
+ void Center(int dir = wxBOTH);
/**
- Returns the average character width for this window.
+ A synonym for CentreOnParent().
*/
- virtual int GetCharWidth() const;
+ void CenterOnParent(int dir = wxBOTH);
- //@{
/**
- 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;
- //@}
+ Centres the window.
- /**
- Returns the default font and colours which are used by the control.
+ @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.
- 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.
+ @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.
- 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.
+ @see Center()
+ */
+ void Centre(int direction = wxBOTH);
- 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().
+ /**
+ Centres the window on its parent. This is a more readable synonym for Centre().
- 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.
+ @param direction
+ Specifies the direction for the centring. May be wxHORIZONTAL, wxVERTICAL
+ or wxBOTH.
- @see InheritAttributes()
+ @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
*/
- static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
+ void CentreOnParent(int direction = wxBOTH);
- //@{
/**
- Returns the size of the window 'client area' in pixels.
+ 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.
- 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 x
+ Receives the x position of the window if non-@NULL.
+ @param y
+ Receives the y position of the window if non-@NULL.
- @see GetSize(), GetVirtualSize()
+ @beginWxPerlOnly
+ In wxPerl this method is implemented as GetPositionXY() returning
+ a 2-element list (x, y).
+ @endWxPerlOnly
+
+ @see GetScreenPosition()
*/
- void GetClientSize(int* width, int* height) const;
- wxSize GetClientSize() const;
- //@}
+ void GetPosition(int* x, int* y) const;
/**
- Returns a pointer to the window's layout constraints, or @NULL if there are none.
+ 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()
*/
- wxLayoutConstraints* GetConstraints() const;
+ wxPoint GetPosition() const;
/**
- Return the sizer that this window is a member of, if any, otherwise @NULL.
+ Returns the position and size of the window as a wxRect object.
+
+ @see GetScreenRect()
*/
- wxSizer* GetContainingSizer() const;
+ wxRect GetRect() const;
/**
- Return the cursor associated with this window.
+ Returns the window position in screen coordinates, whether the window is a
+ child window or a top level one.
- @see SetCursor()
+ @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 GetPosition()
*/
- const wxCursor& GetCursor() const;
+ void GetScreenPosition(int* x, int* y) const;
/**
- Currently this is the same as calling
- wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
+ Returns the window position in screen coordinates, whether the window is a
+ child window or a top level one.
- 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 GetPosition()
+ */
+ wxPoint GetScreenPosition() const;
- 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.
+ /**
+ Returns the position and size of the window on the screen as a wxRect object.
+
+ @see GetRect()
*/
- virtual wxVisualAttributes GetDefaultAttributes() const;
+ wxRect GetScreenRect() const;
/**
- Returns the associated drop target, which may be @NULL.
+ 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;
- @see SetDropTarget(), @ref overview_dnd
+ /**
+ Get the client rectangle in window (i.e. client) coordinates
*/
- virtual wxDropTarget* GetDropTarget() const;
+ wxRect GetClientRect() 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.
+ Moves the window to the given position.
- @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
+ @param x
+ 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:
+ @code
+ SetSize(x, y, wxDefaultCoord, wxDefaultCoord, wxSIZE_USE_EXISTING);
+ @endcode
+
+ @see SetSize()
*/
- wxSize GetEffectiveMinSize() const;
+ void Move(int x, int y, int flags = wxSIZE_USE_EXISTING);
/**
- Returns the event handler for this window.
- By default, the window is its own event handler.
+ Moves the window to the given position.
- @see SetEventHandler(), PushEventHandler(),
- PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
+ @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:
+ @code
+ SetSize(x, y, wxDefaultCoord, wxDefaultCoord, wxSIZE_USE_EXISTING);
+ @endcode
+
+ @see SetSize()
*/
- wxEvtHandler* GetEventHandler() const;
+ void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING);
+
+ void SetPosition(const wxPoint& pt);
+
+ //@}
+
/**
- Returns the extra style bits for the window.
+ @name Coordinate conversion functions
*/
- long GetExtraStyle() const;
+ //@{
/**
- Returns the font for this window.
+ Converts to screen coordinates from coordinates relative to this window.
- @see SetFont()
+ @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.
+
+ @beginWxPerlOnly
+ In wxPerl this method returns a 2-element list instead of
+ modifying its parameters.
+ @endWxPerlOnly
*/
- wxFont GetFont() const;
+ void ClientToScreen(int* x, int* y) 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.
+ Converts to screen coordinates from coordinates relative to this window.
- @see SetForegroundColour(), SetBackgroundColour(),
- GetBackgroundColour()
+ @param pt
+ The client position for the second form of the function.
*/
- wxColour GetForegroundColour() const;
+ wxPoint ClientToScreen(const wxPoint& pt) const;
/**
- Returns the grandparent of a window, or @NULL if there isn't one.
+ Converts a point or size from dialog units to pixels.
+
+ 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.
+
+ @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
+
+ @see ConvertPixelsToDialog()
*/
- wxWindow* GetGrandParent() const;
+ wxPoint ConvertDialogToPixels(const wxPoint& pt) 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.
+ @overload
*/
- virtual WXWidget GetHandle() const;
+ wxSize ConvertDialogToPixels(const wxSize& sz) 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.
+ Converts a point or size from pixels to dialog units.
- @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
- */
- wxString GetHelpText() const;
+ 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.
- /**
- 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.
+ @remarks Dialog units are used for maintaining a dialog's proportions
+ even if the font changes.
- @param point
- Coordinates of the mouse at the moment of help event emission.
- @param origin
- Help event origin, see also wxHelpEvent::GetOrigin.
+ @see ConvertDialogToPixels()
*/
- virtual wxString GetHelpTextAtPoint(const wxPoint& point,
- wxHelpEvent::Origin origin) const;
+ wxPoint ConvertPixelsToDialog(const wxPoint& pt) const;
/**
- Returns the identifier of the window.
+ @overload
+ */
+ wxSize ConvertPixelsToDialog(const wxSize& sz) const;
- @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.
+ /**
+ Converts from screen to client window coordinates.
- @see SetId(), @ref overview_windowids
+ @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.
*/
- wxWindowID GetId() const;
+ void ScreenToClient(int* x, int* y) const;
/**
- Generic way of getting a label from any window, for
- identification purposes.
+ Converts from screen to client window coordinates.
- @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.
+ @param pt
+ The screen position.
*/
- virtual wxString GetLabel() const;
+ wxPoint ScreenToClient(const wxPoint& pt) const;
- /**
- Returns the maximum size of window's client area.
+ //@}
- 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
- SetClientSize().
- @see GetMaxSize()
+ /**
+ @name Drawing-related functions
*/
- virtual wxSize GetMaxClientSize() const;
+ //@{
/**
- Returns the maximum size of the window.
+ Clears the window by filling it with the current background colour.
- 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().
+ Does not cause an erase background event to be generated.
- @see GetMaxClientSize()
+ 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.
*/
- virtual wxSize GetMaxSize() const;
+ virtual void ClearBackground();
/**
- Returns the minimum size of window's client area, an indication to the sizer
- layout mechanism that this is the minimum required size of its client area.
+ Freezes the window or, in other words, prevents any updates from taking
+ place on screen, the window is not redrawn at all.
- It normally just returns the value set by SetMinClientSize(), but it can be
- overridden to do the calculation on demand.
+ 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.
+
+ If the window has any children, they are recursively frozen too.
+
+ 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 GetMinSize()
+ @see wxWindowUpdateLocker, Thaw(), IsFrozen()
*/
- virtual wxSize GetMinClientSize() const;
+ void Freeze();
/**
- Returns the minimum size of the window, an indication to the sizer layout
- mechanism that this is the minimum required size.
+ Re-enables window updating after a previous call to Freeze().
- This method normally just returns the value set by SetMinSize(), but it
- can be overridden to do the calculation on demand.
+ To really thaw the control, it must be called exactly the same number
+ of times as Freeze().
- @see GetMinClientSize()
+ If the window has any children, they are recursively thawed too.
+
+ @see wxWindowUpdateLocker, Freeze(), IsFrozen()
*/
- virtual wxSize GetMinSize() const;
+ void Thaw();
/**
- Returns the window's name.
+ Returns @true if the window is currently frozen by a call to Freeze().
- @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 Freeze(), Thaw()
+ */
+ bool IsFrozen() const;
- @see SetName()
+ /**
+ Returns the background colour of the window.
+
+ @see SetBackgroundColour(), SetForegroundColour(), GetForegroundColour()
*/
- virtual wxString GetName() const;
+ wxColour GetBackgroundColour() const;
/**
- Returns the next window after this one among the parent children or @NULL
- if this window is the last child.
+ Returns the background style of the window.
- @since 2.8.8
+ @see SetBackgroundColour(), GetForegroundColour(),
+ SetBackgroundStyle(), SetTransparent()
+ */
+ virtual wxBackgroundStyle GetBackgroundStyle() const;
- @see GetPrevSibling()
+ /**
+ Returns the character height for this window.
*/
- wxWindow* GetNextSibling() const;
+ virtual int GetCharHeight() const;
/**
- Returns the parent of the window, or @NULL if there is no parent.
+ Returns the average character width for this window.
*/
- wxWindow* GetParent() const;
+ virtual int GetCharWidth() const;
/**
- 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.
+ Currently this is the same as calling
+ wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
- @param menu
- The menu to show
- @param pos
- The position at which to show the menu in client coordinates
+ 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.
- @return The selected menu item id or wxID_NONE if none selected or an
- error occurred.
+ 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.
*/
- int GetPopupMenuSelectionFromUser(wxMenu& menu, const wxPoint& pos);
+ virtual wxVisualAttributes GetDefaultAttributes() const;
/**
- See the GetPopupMenuSelectionFromUser(wxMenu&, const wxPoint&) overload.
- This overload differs only because it takes two integers for the
- menu position instead of a wxPoint.
+ Returns the font for this window.
+
+ @see SetFont()
*/
- int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
+ wxFont GetFont() 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 foreground colour of the window.
- @param x
- Receives the x position of the window if non-@NULL.
- @param y
- Receives the y position of the window if non-@NULL.
+ @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.
- @see GetScreenPosition()
+ @see SetForegroundColour(), SetBackgroundColour(),
+ GetBackgroundColour()
*/
- void GetPosition(int* x, int* y) const;
+ wxColour GetForegroundColour() 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.
+ Gets the dimensions of the string as it would be drawn on the
+ window with the currently selected font.
- @see GetScreenPosition()
+ The text extent is returned in the @a w and @a h pointers.
+
+ @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).
+
+ @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
*/
- wxPoint GetPosition() const;
+ void GetTextExtent(const wxString& string,
+ int* w, int* h,
+ int* descent = NULL,
+ int* externalLeading = NULL,
+ const wxFont* font = NULL) const;
/**
- Returns the previous window before this one among the parent children or @c
- @NULL if this window is the first child.
+ 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;
- @since 2.8.8
+ /**
+ Returns the region specifying which parts of the window have been damaged.
+ Should only be called within an wxPaintEvent handler.
- @see GetNextSibling()
+ @see wxRegion, wxRegionIterator
*/
- wxWindow* GetPrevSibling() const;
+ const wxRegion& GetUpdateRegion() const;
/**
- Returns the position and size of the window as a wxRect object.
+ Get the update rectangle bounding box in client coords
+ */
+ wxRect GetUpdateClientRect() const;
- @see GetScreenRect()
+ /**
+ Returns @true if this window background is transparent (as, for example,
+ for wxStaticText) and should show the parent window background.
+
+ 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.
*/
- wxRect GetRect() const;
+ virtual bool HasTransparentBackground();
/**
- Returns the window position in screen coordinates, whether the window is a
- child window or a top level one.
+ 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 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.
+ @param eraseBackground
+ If @true, the background will be erased.
+ @param rect
+ If non-@NULL, only the given rectangle will be treated as damaged.
- @see GetPosition()
+ @see RefreshRect()
*/
- void GetScreenPosition(int* x, int* y) const;
+ virtual void Refresh(bool eraseBackground = true,
+ const wxRect* rect = NULL);
/**
- Returns the window position in screen coordinates, whether the window is a
- child window or a top level one.
+ Redraws the contents of the given rectangle: only the area inside it will be
+ repainted.
- @see GetPosition()
+ 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)).
*/
- wxPoint GetScreenPosition() const;
+ void RefreshRect(const wxRect& rect, bool eraseBackground = true);
/**
- Returns the position and size of the window on the screen as a wxRect object.
+ 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).
- @see GetRect()
+ 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.
*/
- wxRect GetScreenRect() const;
+ virtual void Update();
/**
- Returns the built-in scrollbar position.
+ Sets the background colour of the window.
- @see See SetScrollbar()
- */
- virtual int GetScrollPos(int orientation) const;
+ 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.
+
+ 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
+ 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
+ automatically under GTK.
+ Note that setting the background colour does not cause an
+ immediate refresh, so you may wish to call wxWindow::ClearBackground
+ or wxWindow::Refresh after calling this function.
+ Using this function will disable attempts to use themes for
+ this window, if the system supports them. Use with care since
+ usually the themes represent the appearance chosen by the user
+ to be used for all applications on the system.
- /**
- Returns the built-in scrollbar range.
+ @return @true if the colour was really changed, @false if it was already set
+ to this colour and nothing was done.
- @see SetScrollbar()
+ @see GetBackgroundColour(), SetForegroundColour(),
+ GetForegroundColour(), ClearBackground(),
+ Refresh(), wxEraseEvent, wxSystemSettings
*/
- virtual int GetScrollRange(int orientation) const;
+ virtual bool SetBackgroundColour(const wxColour& colour);
/**
- Returns the built-in scrollbar thumb size.
+ 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 SetScrollbar()
+ @see SetBackgroundColour(), GetForegroundColour(),
+ SetTransparent(), IsTransparentBackgroundSupported()
*/
- virtual int GetScrollThumb(int orientation) const;
+ virtual bool SetBackgroundStyle(wxBackgroundStyle style);
/**
- Returns the size of the entire window in pixels, including title bar, border,
- scrollbars, etc.
+ Checks whether using transparent background might work.
- 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.
+ 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.
- @param width
- Receives the window width.
- @param height
- Receives the window height.
+ 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 GetClientSize(), GetVirtualSize()
- */
- void GetSize(int* width, int* height) const;
+ @param reason
+ If not @NULL, a reason message is provided if transparency is not
+ supported.
- /**
- See the GetSize(int*,int*) overload for more info.
- */
- wxSize GetSize() const;
+ @return @true if background transparency is supported.
- /**
- Return the sizer associated with the window by a previous call to
- SetSizer() or @NULL.
+ @since 2.9.4
*/
- wxSizer* GetSizer() const;
+ virtual bool IsTransparentBackgroundSupported(wxString *reason = NULL) const;
/**
- Gets the dimensions of the string as it would be drawn on the
- window with the currently selected font.
+ Sets the font for this window. This function should not be called for the
+ parent window if you don't want its font to be inherited by its children,
+ use SetOwnFont() instead in this case and see InheritAttributes() for more
+ explanations.
- The text extent is returned in @a w and @a h pointers.
+ Please notice that the given font is not automatically used for
+ wxPaintDC objects associated with this window, you need to
+ call wxDC::SetFont too. However this font is used by
+ any standard controls for drawing their text as well as by
+ GetTextExtent().
- @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).
- */
- virtual void GetTextExtent(const wxString& string, int* w, int* h,
- int* descent = NULL,
- int* externalLeading = NULL,
- const wxFont* font = NULL) const;
+ Font to associate with this window, pass
+ wxNullFont to reset to the default font.
- /**
- 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;
+ @return @true if the font was really changed, @false if it was already set
+ to this font and nothing was done.
- /**
- Get the associated tooltip or @NULL if none.
+ @see GetFont(), InheritAttributes()
*/
- wxToolTip* GetToolTip() const;
+ virtual bool SetFont(const wxFont& font);
/**
- Returns the region specifying which parts of the window have been damaged.
- Should only be called within an wxPaintEvent handler.
+ Sets the foreground colour of the window.
- @see wxRegion, wxRegionIterator
- */
- const wxRegion& GetUpdateRegion() const;
+ 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.
- /**
- Returns a pointer to the current validator for the window, or @NULL if
- there is none.
- */
- virtual wxValidator* GetValidator();
+ Please see InheritAttributes() for explanation of the difference between
+ this method and SetOwnForegroundColour().
- //@{
- /**
- 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.
- */
- wxSize GetVirtualSize() const;
+ @param colour
+ The colour to be used as the foreground colour; pass
+ wxNullColour to reset to the default colour.
- /**
- Like the other GetVirtualSize() overload but uses pointers instead.
+ @return @true if the colour was really changed, @false if it was already set
+ to this colour and nothing was done.
- @param width
- Receives the window virtual width.
- @param height
- Receives the window virtual height.
+ @see GetForegroundColour(), SetBackgroundColour(),
+ GetBackgroundColour(), ShouldInheritColours()
*/
- void GetVirtualSize(int* width, int* height) const;
- //@}
+ virtual bool SetForegroundColour(const wxColour& colour);
/**
- Returns the size of the left/right and top/bottom borders of this window in x
- and y components of the result respectively.
- */
- virtual wxSize GetWindowBorderSize() const;
+ Sets the background colour of the window but prevents it from being inherited
+ by the children of this window.
- /**
- Gets the window style that was passed to the constructor or @b Create
- method. @b GetWindowStyle() is another name for the same function.
+ @see SetBackgroundColour(), InheritAttributes()
*/
- virtual long GetWindowStyleFlag() const;
+ void SetOwnBackgroundColour(const wxColour& colour);
/**
- Returns the value previously passed to SetWindowVariant().
+ Sets the font of the window but prevents it from being inherited by the
+ children of this window.
+
+ @see SetFont(), InheritAttributes()
*/
- wxWindowVariant GetWindowVariant() const;
+ void SetOwnFont(const wxFont& font);
/**
- 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.
+ Sets the foreground colour of the window but prevents it from being inherited
+ by the children of this window.
- @see Navigate()
+ @see SetForegroundColour(), InheritAttributes()
*/
- bool HandleAsNavigationKey(const wxKeyEvent& event);
+ void SetOwnForegroundColour(const wxColour& colour);
/**
- Shorthand for:
- @code
- GetEventHandler()->SafelyProcessEvent(event);
- @endcode
+ @deprecated use wxDC::SetPalette instead.
*/
- bool HandleWindowEvent(wxEvent& event) const;
+ void SetPalette(const wxPalette& pal);
/**
- Returns @true if this window has the current mouse capture.
+ 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 CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
- wxMouseCaptureChangedEvent
+ The base class version returns @false, but this method is overridden in
+ wxControl where it returns @true.
*/
- virtual bool HasCapture() const;
+ virtual bool ShouldInheritColours() const;
/**
- Returns @true if the window has the given @a exFlag bit set in its
- extra styles.
-
- @see SetExtraStyle()
- */
- 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 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.
- /**
- Returns @true if the window has the given @a flag bit set.
+ 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.
*/
- bool HasFlag(int flag) const;
+ virtual void SetThemeEnabled(bool enable);
/**
- Returns @true if the window (or in case of composite controls, its main
- child window) has focus.
-
- @see FindFocus()
- */
- virtual bool HasFocus() const;
+ */
+ virtual bool GetThemeEnabled() 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 do it as well to
- allow the library to handle such windows appropriately.
+ 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.
*/
- virtual bool HasMultiplePages() const;
+ virtual bool CanSetTransparent();
/**
- Returns @true if this window has a scroll bar for this orientation.
+ 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().
- @param orient
- Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+ 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 HasScrollbar(int orient) const;
+ virtual bool SetTransparent(wxByte alpha);
- /**
- Returns @true if this window background is transparent (as, for example,
- for wxStaticText) and should show the parent window background.
+ //@}
- 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 HasTransparentBackground();
/**
- Equivalent to calling wxWindow::Show(@false).
+ @name Event-handling functions
+
+ wxWindow allows you to build a (sort of) stack of event handlers which
+ can be used to override the window's own event handling.
*/
- 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.
+ Returns the event handler for this window.
+ By default, the window is its own event handler.
- @since 2.9.0
+ @see SetEventHandler(), PushEventHandler(),
+ PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
*/
- virtual bool HideWithEffect(wxShowEffect effect,
- unsigned int timeout = 0);
+ wxEvtHandler* GetEventHandler() 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.
+ 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.
- 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.
+ @return Returns @true if the key pressed was for navigation and was
+ handled, @false otherwise.
- 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 Navigate()
*/
- virtual void InheritAttributes();
+ bool HandleAsNavigationKey(const wxKeyEvent& event);
/**
- Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
- to the dialog via validators.
- */
- virtual void InitDialog();
+ Shorthand for:
+ @code
+ GetEventHandler()->SafelyProcessEvent(event);
+ @endcode
- /**
- Resets the cached best size value so it will be recalculated the next time it
- is needed.
+ @see ProcessWindowEvent()
*/
- void InvalidateBestSize();
+ bool HandleWindowEvent(wxEvent& event) const;
/**
- 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.
+ Convenient wrapper for ProcessEvent().
- @see wxBufferedDC
+ 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.
*/
- virtual bool IsDoubleBuffered() const;
+ bool ProcessWindowEvent(wxEvent& event);
/**
- Returns @true if the window is enabled, i.e. if it accepts user input,
- @false otherwise.
+ Wrapper for wxEvtHandler::ProcessEventLocally().
- 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()
+ 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.
- @see Enable()
- */
- bool IsEnabled() const;
+ @since 2.9.1
+ */
+ bool ProcessWindowEventLocally(wxEvent& event);
- //@{
/**
- 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.
+ 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
*/
- 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;
- //@}
+ wxEvtHandler* PopEventHandler(bool deleteHandler = false);
/**
- Returns @true if the window is currently frozen by a call to Freeze().
+ Pushes this event handler onto the event stack for the window.
- @see Freeze(), Thaw()
+ 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
*/
- bool IsFrozen() const;
+ void PushEventHandler(wxEvtHandler* handler);
/**
- Returns @true if the window is retained, @false otherwise.
+ Find the given @a handler in the windows event handler stack and
+ removes (but does not delete) it from the stack.
- @remarks Retained windows are only available on X platforms.
+ See wxEvtHandler::Unlink() for more info.
+
+ @param handler
+ The event handler to remove, must be non-@NULL and
+ must be present in this windows event handlers stack.
+
+ @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 bool IsRetained() const;
+ bool RemoveEventHandler(wxEvtHandler* handler);
/**
- Return whether a scrollbar is always shown.
+ Sets the event handler for this window.
- @param orient
- Orientation to check, either wxHORIZONTAL or wxVERTICAL.
+ 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.
- @see AlwaysShowScrollbars()
+ @param handler
+ Specifies the handler to be set. Cannot be @NULL.
+
+ @see @ref overview_events_processing
*/
- virtual bool IsScrollbarAlwaysShown(int orient) const;
+ void SetEventHandler(wxEvtHandler* handler);
/**
- Returns @true if the window is shown, @false if it has been hidden.
+ wxWindows cannot be used to form event handler chains; this function
+ thus will assert when called.
- @see IsShownOnScreen()
+ 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 bool IsShown() const;
+ virtual void SetNextHandler(wxEvtHandler* handler);
/**
- 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.
+ wxWindows cannot be used to form event handler chains; this function
+ thus will assert when called.
- @see IsShown()
+ 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 bool IsShownOnScreen() const;
+ virtual void SetPreviousHandler(wxEvtHandler* handler);
+
+ //@}
+
+
/**
- 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.
+ @name Window styles functions
*/
- 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).
+ Returns the extra style bits for the window.
*/
- virtual bool IsTopLevel() const;
+ long GetExtraStyle() const;
/**
- Invokes the constraint-based layout algorithm or the sizer-based algorithm
- for this window.
-
- See SetAutoLayout(): when auto layout is on, this function gets called automatically
- when the window is resized.
+ 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;
- @see @ref overview_windowsizing
+ /**
+ See GetWindowStyleFlag() for more info.
*/
- virtual bool Layout();
+ long GetWindowStyle() const;
/**
- Lowers the window to the bottom of the window hierarchy (Z-order).
+ Returns @true if the window has the given @a exFlag bit set in its
+ extra styles.
- @see Raise()
+ @see SetExtraStyle()
*/
- virtual void Lower();
+ bool HasExtraStyle(int exFlag) const;
/**
- Disables all other windows in the application so that
- the user can only interact with this window.
+ Returns @true if the window has the given @a flag bit set.
+ */
+ bool HasFlag(int flag) const;
- @param modal
- 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.
+ /**
+ Sets the extra style bits for the window.
+ The currently defined extra style bits are reported in the class
+ description.
*/
- virtual void MakeModal(bool modal = true);
+ virtual void SetExtraStyle(long exStyle);
/**
- Moves the window to the given position.
+ 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.
- @param x
- Required x position.
- @param y
- Required y position.
- @param flags
- See SetSize() for more info about this parameter.
+ See @ref overview_windowstyles "Window styles" for more information about flags.
- @remarks Implementations of SetSize can also implicitly implement the
- Move() function, which is defined in the base wxWindow class as the call:
- @code
- SetSize(x, y, wxDefaultCoord, wxDefaultCoord, wxSIZE_USE_EXISTING);
- @endcode
+ @see GetWindowStyleFlag()
+ */
+ virtual void SetWindowStyleFlag(long style);
- @see SetSize()
+ /**
+ See SetWindowStyleFlag() for more info.
*/
- void Move(int x, int y, int flags = wxSIZE_USE_EXISTING);
+ void SetWindowStyle(long style);
/**
- Moves the window to the given position.
+ 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).
- @param pt
- wxPoint object representing the position.
- @param flags
- See SetSize() for more info about this parameter.
+ Also, please notice that not all styles can be changed after the control
+ creation.
- @remarks Implementations of SetSize() can also implicitly implement the
- Move() function, which is defined in the base wxWindow class as the call:
- @code
- SetSize(x, y, wxDefaultCoord, wxDefaultCoord, wxSIZE_USE_EXISTING);
- @endcode
+ @return Returns @true if the style was turned on by this function, @false
+ if it was switched off.
- @see SetSize()
+ @see SetWindowStyleFlag(), HasFlag()
*/
- void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING);
+ bool ToggleWindowStyle(int flag);
+
+ //@}
+
+
+ /**
+ @name Tab order functions
+ */
+ //@{
/**
Moves this window in the tab navigation order after the specified @e win.
control. See also wxNavigationKeyEvent and
HandleAsNavigationKey.
*/
- bool Navigate(int flags = IsForward);
+ bool Navigate(int flags = wxNavigationKeyEvent::IsForward);
/**
Performs a keyboard navigation action inside this window.
See Navigate() for more information.
*/
- bool NavigateIn(int flags = IsForward);
-
- /**
- 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().
+ bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward);
- See @ref overview_windowids for more information.
+ //@}
- @param count
- The number of sequential IDs to reserve.
- @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 UnreserveControlId(), wxIdManager,
- @ref overview_windowids
+ /**
+ @name Z order functions
*/
- static wxWindowID NewControlId(int count = 1);
+ //@{
/**
- 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.
+ Lowers the window to the bottom of the window hierarchy (Z-order).
- 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();
+ @remarks
+ This function only works for wxTopLevelWindow-derived classes.
- /**
- Same as #ScrollLines (-1).
+ @see Raise()
*/
- bool LineUp();
+ virtual void Lower();
/**
- Same as #ScrollLines (1).
- */
- bool LineDown();
+ Raises the window to the top of the window hierarchy (Z-order).
- /**
- Same as #ScrollPages (-1).
- */
- bool PageUp();
+ 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.
- /**
- Same as #ScrollPages (1).
+ @remarks
+ This function only works for wxTopLevelWindow-derived classes.
+
+ @see Lower()
*/
- bool PageDown();
+ virtual void Raise();
+
+ //@}
/**
- Removes and returns the top-most event handler on the event handler stack.
+ @name Window status functions
+ */
+ //@{
- @param deleteHandler
- If this is @true, the handler will be deleted after it is removed.
- The default value is @false.
- @see SetEventHandler(), GetEventHandler(),
- PushEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
+ /**
+ Equivalent to calling wxWindow::Show(@false).
*/
- wxEvtHandler* PopEventHandler(bool deleteHandler = false);
+ bool Hide();
- //@{
/**
- 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 usually. If the coordinates are not specified, current mouse
- cursor position is used.
+ This function hides a window, like Hide(), but using a special visual
+ effect if possible.
- @a menu is the menu to pop up.
+ The parameters of this function are the same as for ShowWithEffect(),
+ please see their description there.
- 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).
+ @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.
- @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.
+ 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 wxMenu
+ @see Enable()
*/
- bool PopupMenu(wxMenu* menu,
- const wxPoint& pos = wxDefaultPosition);
- bool PopupMenu(wxMenu* menu, int x, int y);
- //@}
+ bool IsEnabled() const;
/**
- Posts a size event to the window.
-
- This is the same as SendSizeEvent() with @c wxSEND_EVENT_POST argument.
- */
- void PostSizeEvent();
+ 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;
/**
- Posts a size event to the parent of this window.
-
- This is the same as SendSizeEventToParent() with @c wxSEND_EVENT_POST
- argument.
- */
- void PostSizeEventToParent();
+ @overload
+ */
+ bool IsExposed(wxPoint& pt) const;
/**
- Pushes this event handler onto the event stack for the window.
+ @overload
+ */
+ bool IsExposed(int x, int y, int w, int h) const;
- @param handler
- Specifies the handler to be pushed.
+ /**
+ @overload
+ */
+ bool IsExposed(wxRect& rect) const;
+ /**
+ Returns @true if the window is shown, @false if it has been hidden.
- @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 IsShownOnScreen()
*/
- void PushEventHandler(wxEvtHandler* handler);
+ virtual bool IsShown() 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 @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 Lower()
+ @see IsShown()
*/
- virtual void Raise();
+ virtual bool IsShownOnScreen() 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.
+ Disables the window. Same as @ref Enable() Enable(@false).
- @see RefreshRect()
+ @return Returns @true if the window has been disabled, @false if it had
+ been already disabled before the call to this function.
*/
- virtual void Refresh(bool eraseBackground = true,
- const wxRect* rect = NULL);
+ bool Disable();
/**
- Redraws the contents of the given rectangle: only the area inside it will be
- repainted.
+ 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.
- 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)).
+ @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
*/
- void RefreshRect(const wxRect& rect, bool eraseBackground = true);
+ virtual bool Enable(bool enable = true);
/**
- 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.
+ 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.
- @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.
+ 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.
- @return @true if the hotkey was registered successfully. @false if some
- other application already registered a hotkey with this
- modifier/virtualKeyCode combination.
+ @param show
+ If @true displays the window. Otherwise, hides it.
- @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.
+ @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 UnregisterHotKey()
+ @see IsShown(), Hide(), wxRadioBox::Show, wxShowEvent.
*/
- bool RegisterHotKey(int hotkeyId, int modifiers,
- int virtualKeyCode);
+ virtual bool Show(bool show = true);
/**
- Releases mouse input captured with CaptureMouse().
+ This function shows a window, like Show(), but using a special visual
+ effect if possible.
- @see CaptureMouse(), HasCapture(), ReleaseMouse(),
- wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
- */
- void ReleaseMouse();
+ @param effect
+ The effect to use.
- /**
- Removes a child window.
+ @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.
- 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.
+ @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.
- @param child
- Child window to remove.
- */
- virtual void RemoveChild(wxWindow* child);
+ @since 2.9.0
- /**
- Find the given @a handler in the windows event handler chain and remove
- (but not delete) it from it.
+ @see HideWithEffect()
+ */
+ virtual bool ShowWithEffect(wxShowEffect effect,
+ unsigned int timeout = 0);
- @param handler
- The event handler to remove, must be non-@NULL and
- must be present in this windows event handlers chain
+ //@}
- @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()
+ /**
+ @name Context-sensitive help functions
*/
- bool RemoveEventHandler(wxEvtHandler* handler);
+ //@{
/**
- 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.
+ 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.
- @param newParent
- New parent.
+ @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
*/
- virtual bool Reparent(wxWindow* newParent);
+ wxString GetHelpText() const;
/**
- Converts from screen to client window coordinates.
+ 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.
- @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.
+ @see GetHelpText(), wxHelpProvider::AddHelp()
*/
- void ScreenToClient(int* x, int* y) const;
+ void SetHelpText(const wxString& helpText);
/**
- Converts from screen to client window coordinates.
+ 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 pt
- The screen position.
+ @param point
+ Coordinates of the mouse at the moment of help event emission.
+ @param origin
+ Help event origin, see also wxHelpEvent::GetOrigin.
*/
- wxPoint ScreenToClient(const wxPoint& pt) const;
+ virtual wxString GetHelpTextAtPoint(const wxPoint& point,
+ wxHelpEvent::Origin origin) const;
/**
- Scrolls the window by the given number of lines down (if @a lines is
- positive) or up.
+ Get the associated tooltip or @NULL if none.
+ */
+ wxToolTip* GetToolTip() const;
- @return Returns @true if the window was scrolled, @false if it was already
- on top/bottom and nothing was done.
+ /**
+ Get the text of the associated tooltip or empty string if none.
+ */
+ wxString GetToolTipText() const;
- @remarks This function is currently only implemented under MSW and
- wxTextCtrl under wxGTK (it also works for wxScrolled classes
- under all platforms).
+ /**
+ Attach a tooltip to the window.
- @see ScrollPages()
+ 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
*/
- virtual bool ScrollLines(int lines);
+ void SetToolTip(const wxString& tipString);
/**
- Scrolls the window by the given number of pages down (if @a pages is
- positive) or up.
+ @overload
+ */
+ void SetToolTip(wxToolTip* tip);
- @return Returns @true if the window was scrolled, @false if it was already
- on top/bottom and nothing was done.
+ /**
+ Unset any existing tooltip.
- @remarks This function is currently only implemented under MSW and wxGTK.
+ @since 2.9.0
- @see ScrollLines()
+ @see SetToolTip()
+ */
+ void UnsetToolTip();
+
+ //@}
+
+
+ /**
+ @name Popup/context menu functions
*/
- virtual bool ScrollPages(int pages);
+ //@{
/**
- Physically scrolls the pixels in the window and move child windows accordingly.
+ 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.
- @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)
+ @since 2.9.0
+ */
+ int GetPopupMenuSelectionFromUser(wxMenu& menu,
+ const wxPoint& pos = wxDefaultPosition);
- @remarks Note that you can often use wxScrolled instead of using this
- function directly.
+ /**
+ @overload
*/
- virtual void ScrollWindow(int dx, int dy,
- const wxRect* rect = NULL);
+ int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
/**
- This function sends a dummy @ref wxSizeEvent "size event" to
- the window allowing it to re-layout its children positions.
+ Pops up the given menu at the specified coordinates, relative to this
+ window, and returns control when the user has dismissed the menu.
- 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 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.
- 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.
+ @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.
- @param flags
- May include @c wxSEND_EVENT_POST. Default value is 0.
+ @see wxMenu
*/
- virtual void SendSizeEvent(int flags = 0);
+ bool PopupMenu(wxMenu* menu,
+ const wxPoint& pos = wxDefaultPosition);
/**
- 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).
+ @overload
+ */
+ bool PopupMenu(wxMenu* menu, int x, int y);
- @see PostSizeEventToParent()
+ //@}
- @param flags
- See description of this parameter in SendSizeEvent() documentation.
- */
- void SendSizeEventToParent(int flags = 0);
/**
- Sets the accelerator table for this window. See wxAcceleratorTable.
+ Validator functions
*/
- 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.
+ Returns a pointer to the current validator for the window, or @NULL if
+ there is none.
*/
- void SetAccessible(wxAccessible* accessible);
+ virtual wxValidator* GetValidator();
/**
- 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).
+ 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);
- 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.
+ /**
+ Transfers values from child controls to data areas specified by their
+ validators. Returns @false if a transfer failed.
- @param autoLayout
- Set this to @true if you wish the Layout function to be
- called automatically when the window is resized.
+ If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
+ the method will also call TransferDataFromWindow() of all child windows.
- @see SetConstraints()
+ @see TransferDataToWindow(), wxValidator, Validate()
*/
- void SetAutoLayout(bool autoLayout);
+ virtual bool TransferDataFromWindow();
/**
- Sets the background colour of the window.
- Please see InheritAttributes() for explanation of the difference between
- this method and SetOwnBackgroundColour().
+ Transfers values to child controls from data areas specified by their
+ validators.
- @param colour
- The colour to be used as the background colour, pass
- wxNullColour to reset to the default colour.
+ If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
+ the method will also call TransferDataToWindow() of all child windows.
- @remarks The background colour is usually painted by the default
- wxEraseEvent event handler function under Windows and
- automatically under GTK.
- Note that setting the background colour does not cause an
- immediate refresh, so you may wish to call wxWindow::ClearBackground
- or wxWindow::Refresh after calling this function.
- Using this function will disable attempts to use themes for
- this window, if the system supports them. Use with care since
- usually the themes represent the appearance chosen by the user
- to be used for all applications on the system.
+ @return Returns @false if a transfer failed.
- @see GetBackgroundColour(), SetForegroundColour(),
- GetForegroundColour(), ClearBackground(),
- Refresh(), wxEraseEvent
+ @see TransferDataFromWindow(), wxValidator, Validate()
*/
- virtual bool SetBackgroundColour(const wxColour& colour);
+ virtual bool TransferDataToWindow();
/**
- Sets the background style of the window. see GetBackgroundStyle() for
- the description of the possible style values.
+ 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.
- @see SetBackgroundColour(), GetForegroundColour(),
- SetTransparent()
+ @return Returns @false if any of the validations failed.
+
+ @see TransferDataFromWindow(), TransferDataToWindow(),
+ wxValidator
*/
- virtual bool SetBackgroundStyle(wxBackgroundStyle style);
+ virtual bool Validate();
- /**
- 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
+ /**
+ @name wxWindow properties functions
*/
- virtual void SetCanFocus(bool canFocus);
+ //@{
/**
- Sets the caret() associated with the window.
+ 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
*/
- void SetCaret(wxCaret* caret);
+ wxWindowID GetId() const;
- //@{
/**
- This sets the size of the window client area in pixels.
+ Generic way of getting a label from any window, for
+ identification purposes.
- 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.
+ @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 void SetClientSize(int width, int height);
- virtual void SetClientSize(const wxSize& size);
- //@}
+ virtual wxString GetLabel() 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.
+ Returns the layout direction for this window,
+ Note that @c wxLayout_Default is returned if layout direction is not supported.
+ */
+ virtual wxLayoutDirection GetLayoutDirection() const;
- @param constraints
- The constraints to set. Pass @NULL to disassociate and delete the window's
- constraints.
+ /**
+ Returns the window's name.
- @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.
+ @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()
*/
- void SetConstraints(wxLayoutConstraints* constraints);
+ virtual wxString GetName() const;
/**
- 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.
+ Returns the value previously passed to SetWindowVariant().
*/
- void SetContainingSizer(wxSizer* sizer);
+ wxWindowVariant GetWindowVariant() const;
/**
- 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.
+ Sets the identifier of the window.
- @param cursor
- Specifies the cursor that the window should normally display.
+ @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 ::wxSetCursor, wxCursor
+ @see GetId(), @ref overview_windowids
*/
- virtual bool SetCursor(const wxCursor& cursor);
+ void SetId(wxWindowID winid);
/**
- Associates a drop target with this window.
- If the window already has a drop target, it is deleted.
+ Sets the window's label.
- @see GetDropTarget(), @ref overview_dnd
+ @param label
+ The window label.
+
+ @see GetLabel()
*/
- virtual void SetDropTarget(wxDropTarget* target);
+ virtual void SetLabel(const wxString& label);
/**
- 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
+ Sets the layout direction for this window.
*/
- void SetEventHandler(wxEvtHandler* handler);
+ virtual void SetLayoutDirection(wxLayoutDirection dir);
/**
- Sets the extra style bits for the window.
- The currently defined extra style bits are reported in the class
- description.
+ Sets the window's name.
+
+ @param name
+ A name to set for the window.
+
+ @see GetName()
*/
- virtual void SetExtraStyle(long exStyle);
+ virtual void SetName(const wxString& name);
/**
- This sets the window to receive keyboard input.
+ 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.
- @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
- wxPanel::SetFocusIgnoringChildren
+ By default the controls use the normal size, of course, but this function can
+ be used to change this.
*/
- virtual void SetFocus();
+ void SetWindowVariant(wxWindowVariant variant);
/**
- 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).
+ Gets the accelerator table for this window. See wxAcceleratorTable.
+ */
+ wxAcceleratorTable* GetAcceleratorTable();
- By default this method simply calls SetFocus() but
- can be overridden to do something in addition to this in the derived classes.
+ /**
+ Returns the accessible object for this window, if any.
+ See also wxAccessible.
*/
- virtual void SetFocusFromKbd();
+ wxAccessible* GetAccessible();
/**
- Sets the font for this window. This function should not be called for the
- parent window if you don't want its font to be inherited by its children,
- use SetOwnFont() instead in this case and see InheritAttributes() for more
- explanations.
+ Sets the accelerator table for this window. See wxAcceleratorTable.
+ */
+ virtual void SetAcceleratorTable(const wxAcceleratorTable& accel);
- Please notice that the given font is not automatically used for
- wxPaintDC objects associated with this window, you need to
- call wxDC::SetFont too. However this font is used by
- any standard controls for drawing their text as well as by
- GetTextExtent().
+ /**
+ 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);
- @param font
- 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.
- @see GetFont(), InheritAttributes()
+ /**
+ @name Window deletion functions
*/
- virtual bool SetFont(const wxFont& font);
+ //@{
/**
- Sets the foreground colour of the window.
- Please see InheritAttributes() for explanation of the difference between
- this method and SetOwnForegroundColour().
+ This function simply generates a wxCloseEvent whose handler usually tries
+ to close the window. It doesn't close the window itself, however.
- @param colour
- The colour to be used as the foreground colour, pass
- wxNullColour to reset to the default colour.
+ @param force
+ @false if the window's close handler should be able to veto the destruction
+ of this window, @true if it cannot.
- @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.
+ @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 GetForegroundColour(), SetBackgroundColour(),
- GetBackgroundColour(), ShouldInheritColours()
+ @see @ref overview_windowdeletion "Window Deletion Overview",
+ Destroy(), wxCloseEvent
*/
- virtual bool SetForegroundColour(const wxColour& colour);
+ bool Close(bool force = false);
/**
- 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.
+ 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.
- @see GetHelpText(), wxHelpProvider::AddHelp()
+ @return @true if the window has either been successfully deleted, or it
+ has been added to the list of windows pending real deletion.
*/
- void SetHelpText(const wxString& helpText);
+ virtual bool Destroy();
/**
- 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.
+ Returns true if this window is in process of being destroyed.
- @see GetId(), @ref overview_windowids
- */
- void SetId(wxWindowID winid);
+ 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.
- /**
- A @e smart SetSize that will fill in default size components with the
- window's @e best size values.
+ 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;
- 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.)
- @see SetSize(), GetBestSize(), GetEffectiveMinSize(),
- @ref overview_windowsizing
- */
- void SetInitialSize(const wxSize& size = wxDefaultSize);
/**
- Sets the window's label.
-
- @param label
- The window label.
-
- @see GetLabel()
+ @name Drag and drop functions
*/
- virtual void SetLabel(const wxString& label);
+ //@{
/**
- 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.
+ Returns the associated drop target, which may be @NULL.
- @see SetMaxSize()
+ @see SetDropTarget(), @ref overview_dnd
*/
- virtual void SetMaxClientSize(const wxSize& size);
+ virtual wxDropTarget* GetDropTarget() const;
/**
- Sets the maximum size of the window, to indicate to the sizer layout mechanism
- that this is the maximum possible size.
+ Associates a drop target with this window.
+ If the window already has a drop target, it is deleted.
- @see SetMaxClientSize()
+ @see GetDropTarget(), @ref overview_dnd
*/
- virtual void SetMaxSize(const wxSize& size);
+ virtual void SetDropTarget(wxDropTarget* target);
/**
- 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.
+ Enables or disables eligibility for drop file events (OnDropFiles).
- You may need to call this if you change the window size after
- construction and before adding to its parent sizer.
+ @param accept
+ If @true, the window is eligible for drop file events.
+ If @false, the window will not accept drop file events.
- Note, that just as with SetMinSize(), calling this method doesn't
- prevent the program from explicitly making the window smaller than the
- specified size.
+ @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 SetMinSize()
+ @see SetDropTarget()
*/
- virtual void SetMinClientSize(const wxSize& size);
-
- /**
- Sets the minimum size of the window, to indicate to the sizer layout
- mechanism that this is the minimum required size.
+ virtual void DragAcceptFiles(bool accept);
- You may need to call this if you change the window size after
- construction and before adding to its parent sizer.
+ //@}
- 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.
- @see SetMinClientSize()
+ /**
+ @name Constraints, sizers and window layout functions
*/
- virtual void SetMinSize(const wxSize& size);
+ //@{
/**
- Sets the window's name.
-
- @param name
- A name to set for the window.
-
- @see GetName()
+ Returns the sizer of which this window is a member, if any, otherwise @NULL.
*/
- virtual void SetName(const wxString& name);
+ wxSizer* GetContainingSizer() const;
/**
- Sets the background colour of the window but prevents it from being inherited
- by the children of this window.
-
- @see SetBackgroundColour(), InheritAttributes()
+ Returns the sizer associated with the window by a previous call to
+ SetSizer(), or @NULL.
*/
- void SetOwnBackgroundColour(const wxColour& colour);
+ wxSizer* GetSizer() const;
/**
- Sets the font of the window but prevents it from being inherited by the
- children of this window.
+ Sets the window to have the given layout sizer.
- @see SetFont(), InheritAttributes()
- */
- void SetOwnFont(const wxFont& font);
+ 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.
- /**
- Sets the foreground colour of the window but prevents it from being inherited
- by the children of this window.
+ 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.
- @see SetForegroundColour(), InheritAttributes()
+ @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 SetOwnForegroundColour(const wxColour& colour);
+ void SetSizer(wxSizer* sizer, bool deleteOld = true);
/**
- @deprecated use wxDC::SetPalette instead.
+ 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 SetPalette(const wxPalette& pal);
+ void SetSizerAndFit(wxSizer* sizer, bool deleteOld = true);
/**
- Sets the position of one of the built-in scrollbars.
-
- @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.
-
- @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 SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
- wxScrolled
+ Returns a pointer to the window's layout constraints, or @NULL if there are none.
*/
- virtual void SetScrollPos(int orientation, int pos,
- bool refresh = true);
+ wxLayoutConstraints* GetConstraints() const;
/**
- Sets the scrollbar properties of a built-in scrollbar.
-
- @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.
+ 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.
- @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 constraints
+ The constraints to set. Pass @NULL to disassociate and delete the window's
+ constraints.
- @see @ref overview_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
+ @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.
*/
- virtual void SetScrollbar(int orientation, int position,
- int thumbSize, int range,
- bool refresh = true);
+ void SetConstraints(wxLayoutConstraints* constraints);
/**
- Sets the size of the window in pixels.
-
- @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).
+ Invokes the constraint-based layout algorithm or the sizer-based algorithm
+ for this window.
- @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.
+ 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 Move()
+ @see @ref overview_windowsizing
*/
- void SetSize(int x, int y, int width, int height,
- int sizeFlags = wxSIZE_AUTO);
+ virtual bool Layout();
- //@{
/**
- Sets the size of the window in pixels.
- The size is specified using a wxRect, wxSize or by a couple of @c int objects.
+ Determines whether the Layout() function will be called automatically
+ when the window is resized.
- @remarks This form must be used with non-default width and height values.
+ 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 Move()
+ @see SetSizer(), SetConstraints()
*/
- virtual void SetSize(const wxRect& rect);
- virtual void SetSize(const wxSize& size);
- virtual void SetSize(int width, int height);
- //@}
+ void SetAutoLayout(bool autoLayout);
- /**
- 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.
+ bool GetAutoLayout() const;
- Note that this function will also call SetAutoLayout() implicitly with @true
- parameter if the @a sizer is non-@NULL and @false otherwise.
+ //@}
- @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.
- @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 minimial size.
+ @name Mouse functions
*/
- void SetSizerAndFit(wxSizer* sizer, bool deleteOld = true);
+ //@{
/**
- 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.
-
- 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);
+ Directs all mouse input to this window.
+ Call ReleaseMouse() to release the capture.
- //@{
- /**
- Attach a tooltip to the window.
+ 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.
- 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.
+ 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.
- 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 ReleaseMouse(), wxMouseCaptureLostEvent
+ */
+ void CaptureMouse();
- @see GetToolTip(), wxToolTip
+ /**
+ Returns the caret() associated with the window.
*/
- void SetToolTip(const wxString& tip);
- void SetToolTip(wxToolTip* tip);
- //@}
+ wxCaret* GetCaret() const;
/**
- 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().
+ Return the cursor associated with this window.
- 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.
+ @see SetCursor()
*/
- virtual bool SetTransparent(wxByte alpha);
+ const wxCursor& GetCursor() const;
/**
- Deletes the current validator (if any) and sets the window validator, having
- called wxValidator::Clone to create a new validator of this type.
+ Returns @true if this window has the current mouse capture.
+
+ @see CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
+ wxMouseCaptureChangedEvent
*/
- virtual void SetValidator(const wxValidator& validator);
+ virtual bool HasCapture() const;
- //@{
/**
- Sets the virtual size of the window in pixels.
+ Releases mouse input captured with CaptureMouse().
+
+ @see CaptureMouse(), HasCapture(), ReleaseMouse(),
+ wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
*/
- void SetVirtualSize(int width, int height);
- void SetVirtualSize(const wxSize& size);
- //@}
+ void ReleaseMouse();
/**
- Identical to SetWindowStyleFlag().
+ Sets the caret() associated with the window.
*/
- void SetWindowStyle(long style);
+ void SetCaret(wxCaret* caret);
/**
- 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.
+ Sets the window's cursor. Notice that the window cursor also sets it for the
+ children of the window implicitly.
- See @ref overview_windowstyles "Window styles" for more information about flags.
+ The @a cursor may be @c wxNullCursor in which case the window cursor will
+ be reset back to default.
- @see GetWindowStyleFlag()
+ @param cursor
+ Specifies the cursor that the window should normally display.
+
+ @see ::wxSetCursor, wxCursor
*/
- virtual void SetWindowStyleFlag(long style);
+ virtual bool SetCursor(const wxCursor& cursor);
/**
- 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.
+ Moves the pointer to the given position on the window.
- By default the controls use the normal size, of course, but this function can
- be used to change this.
+ @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.
*/
- void SetWindowVariant(wxWindowVariant variant);
+ virtual void WarpPointer(int x, int y);
+
+ //@}
+
+
+
/**
- 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.
+ @name Miscellaneous functions
+ */
+ //@{
- The base class version returns @false, but this method is overridden in
- wxControl where it returns @true.
+ 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
*/
- virtual bool ShouldInheritColours() const;
+ wxBorder GetBorder(long flags) const;
/**
- 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.
+ Get border for the flags of this window
+ */
+ wxBorder GetBorder() const;
- @param show
- If @true displays the window. Otherwise, hides it.
+
+ /**
+ 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 @true if the window has been shown or hidden or @false if nothing
- was done because it already was in the requested state.
+ @code
+ // do the window-specific processing after processing the update event
+ void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
+ {
+ if ( event.GetSetEnabled() )
+ Enable(event.GetEnabled());
- @see IsShown(), Hide(), wxRadioBox::Show, wxShowEvent.
+ if ( event.GetSetText() )
+ {
+ if ( event.GetText() != GetTitle() )
+ SetTitle(event.GetText());
+ }
+ }
+ @endcode
*/
- virtual bool Show(bool show = true);
+ virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
/**
- This function shows a window, like Show(), but using a special visual
- effect if possible.
+ 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.
- @param effect
- The effect to use.
+ @beginWxPerlOnly
+ This method will return an integer in wxPerl.
+ @endWxPerlOnly
+ */
+ virtual WXWidget GetHandle() const;
- @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.
+ /**
+ 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;
- @note Currently this function is only implemented in wxMSW and does the
- same thing as Show() in the other ports.
+ /**
+ 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.
- @since 2.9.0
+ 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.
- @see HideWithEffect()
+ 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 bool ShowWithEffect(wxShowEffect effect,
- unsigned int timeout = 0);
+ virtual void InheritAttributes();
/**
- Reenables window updating after a previous call to Freeze().
+ Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
+ to the dialog via validators.
+ */
+ virtual void InitDialog();
- To really thaw the control, it must be called exactly the same number
- of times as Freeze().
+ /**
+ 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.
- If the window has any children, they are recursively thawn too.
+ @see wxBufferedDC
+ */
+ virtual bool IsDoubleBuffered() const;
- @see wxWindowUpdateLocker, Freeze(), IsFrozen()
+ /**
+ Turn on or off double buffering of the window if the system supports it.
*/
- void Thaw();
+ void SetDoubleBuffered(bool on);
/**
- 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).
+ Returns @true if the window is retained, @false otherwise.
- Also, please notice that not all styles can be changed after the control
- creation.
+ @remarks Retained windows are only available on X platforms.
+ */
+ virtual bool IsRetained() const;
- @return Returns @true if the style was turned on by this function, @false
- if it was switched off.
+ /**
+ 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;
- @see SetWindowStyleFlag(), HasFlag()
+ /**
+ 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).
*/
- bool ToggleWindowStyle(int flag);
+ virtual bool IsTopLevel() const;
+
/**
- 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.
+ 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.
- @see TransferDataToWindow(), wxValidator, Validate()
+ 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 bool TransferDataFromWindow();
+ virtual void OnInternalIdle();
/**
- Transfers values to child controls from data areas specified by their
- validators.
+ Registers a system wide hotkey. Every time the user presses the hotkey
+ registered here, this window will receive a hotkey event.
- If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
- the method will also call TransferDataToWindow() of all child windows.
+ 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.
- @return Returns @false if a transfer failed.
+ @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.
- @see TransferDataFromWindow(), wxValidator, Validate()
+ @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 TransferDataToWindow();
+ virtual bool RegisterHotKey(int hotkeyId, int modifiers,
+ int virtualKeyCode);
/**
Unregisters a system wide hotkey.
*/
virtual bool UnregisterHotKey(int hotkeyId);
- /**
- Unreserve an ID or range of IDs that was reserved by NewControlId().
- See @ref overview_windowids for more information.
-
- @param id
- The starting ID of the range of IDs to unreserve.
- @param count
- The number of sequential IDs to unreserve.
-
- @see NewControlId(), wxIdManager, @ref overview_windowids
- */
- static void UnreserveControlId(wxWindowID id, int count = 1);
-
- /**
- Unset any existing tooltip.
-
- @since 2.9.0
-
- @see SetToolTip()
- */
- void UnsetToolTip();
-
- /**
- 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.
-
- 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.
- */
- virtual void Update();
-
/**
This function sends one or more wxUpdateUIEvent to the window.
The particular implementation depends on the window; for example a
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 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
*/
virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE);
+ //@}
+
+
+ // NOTE: static functions must have their own group or Doxygen will screw
+ // up the ordering of the member groups
+
/**
- 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.
+ @name Miscellaneous static functions
+ */
+ //@{
- @return Returns @false if any of the validations failed.
+ /**
+ Returns the default font and colours which are used by the control.
- @see TransferDataFromWindow(), TransferDataToWindow(),
- wxValidator
+ 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().
+
+ 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 InheritAttributes()
*/
- virtual bool Validate();
+ static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
/**
- Moves the pointer to the given position on the window.
+ Finds the window or control which currently has the keyboard focus.
- @note This function is not supported under Mac because Apple Human
- Interface Guidelines forbid moving the mouse cursor programmatically.
+ @remarks Note that this is a static function, so it can be called without
+ needing a wxWindow pointer.
- @param x
- The new x position for the cursor.
- @param y
- The new y position for the cursor.
+ @see SetFocus(), HasFocus()
*/
- virtual void WarpPointer(int x, int y);
+ static wxWindow* FindFocus();
+
+ /**
+ 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()
+
+ @return Window with the given @a id or @NULL if not found.
+ */
+ static wxWindow* FindWindowById(long id, const wxWindow* parent = 0);
+
+ /**
+ 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()
+
+ @return Window with the given @a label or @NULL if not found.
+ */
+ static wxWindow* FindWindowByLabel(const wxString& label,
+ const wxWindow* parent = 0);
+
+ /**
+ Find a window by its name (as given in a window constructor or Create()
+ function call).
+
+ 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 no window with such name is found,
+ FindWindowByLabel() is called.
+
+ @see FindWindow()
+
+ @return Window with the given @a name or @NULL if not found.
+ */
+ static wxWindow* FindWindowByName(const wxString& name,
+ const wxWindow* parent = 0);
+
+ /**
+ Returns the currently captured window.
+
+ @see HasCapture(), CaptureMouse(), ReleaseMouse(),
+ wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
+ */
+ static wxWindow* GetCapture();
+
+ /**
+ 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().
+
+ See @ref overview_windowids for more information.
+
+ @param count
+ The number of sequential IDs to reserve.
+
+ @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 UnreserveControlId(), wxIdManager,
+ @ref overview_windowids
+ */
+ static wxWindowID NewControlId(int count = 1);
+
+ /**
+ Unreserve an ID or range of IDs that was reserved by NewControlId().
+ See @ref overview_windowids for more information.
+
+ @param id
+ The starting ID of the range of IDs to unreserve.
+ @param count
+ The number of sequential IDs to unreserve.
+
+ @see NewControlId(), wxIdManager, @ref overview_windowids
+ */
+ static void UnreserveControlId(wxWindowID id, int count = 1);
+
+ //@}
+
protected:
/**
- 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().
+ Centres the window.
+
+ @param direction
+ Specifies the direction for the centring. May be wxHORIZONTAL,
+ wxVERTICAL or wxBOTH. It may also include the wxCENTRE_ON_SCREEN
+ flag.
+
+ @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);
+
+ /**
+ Implementation of GetBestSize() that can be overridden.
+
+ 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:
*/
virtual wxSize DoGetBestSize() const;
+ /**
+ Override this method to return the best size for a custom control.
+
+ 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.
+
+ 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.
+
+ @see @ref overview_windowsizing
+
+ @since 2.9.0
+ */
+ virtual wxSize DoGetBestClientSize() const;
+
+ /**
+ Override this method to implement height-for-width best size
+ calculation.
+
+ 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.
+
+ 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 @todo provide deprecation description
+ @deprecated Use SetInitialSize() instead.
*/
virtual void SetInitialBestSize(const wxSize& size);
+
+ /**
+ Generate wxWindowDestroyEvent for this window.
+
+ 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();
+
+ /**
+ 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.
+ */
+ 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