1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: interface of wxWindow
4 // Author: wxWidgets team
6 // Licence: wxWindows license
7 /////////////////////////////////////////////////////////////////////////////
13 wxWindow is the base class for all windows and represents any visible object on
14 screen. All controls, top level windows and so on are windows. Sizers and
15 device contexts are not, however, as they don't appear on screen themselves.
17 Please note that all children of the window will be deleted automatically by
18 the destructor before the window itself is deleted which means that you don't
19 have to worry about deleting them manually. Please see the @ref
20 overview_windowdeletion "window deletion overview" for more information.
22 Also note that in this, and many others, wxWidgets classes some
23 @c GetXXX() methods may be overloaded (as, for example,
24 wxWindow::GetSize or wxWindow::GetClientSize). In this case, the overloads
25 are non-virtual because having multiple virtual functions with the same name
26 results in a virtual function name hiding at the derived class level (in
27 English, this means that the derived class has to override all overloaded
28 variants if it overrides any of them). To allow overriding them in the derived
29 class, wxWidgets uses a unique protected virtual @c DoGetXXX() method
30 and all @c GetXXX() ones are forwarded to it, so overriding the former
31 changes the behaviour of the latter.
34 @style{wxBORDER_DEFAULT}
35 The window class will decide the kind of border to show, if any.
36 @style{wxBORDER_SIMPLE}
37 Displays a thin border around the window. wxSIMPLE_BORDER is the
38 old name for this style.
39 @style{wxBORDER_SUNKEN}
40 Displays a sunken border. wxSUNKEN_BORDER is the old name for this
42 @style{wxBORDER_RAISED}
43 Displays a raised border. wxRAISED_BORDER is the old name for this
45 @style{wxBORDER_STATIC}
46 Displays a border suitable for a static control. wxSTATIC_BORDER
47 is the old name for this style. Windows only.
48 @style{wxBORDER_THEME}
49 Displays a native border suitable for a control, on the current
50 platform. On Windows XP or Vista, this will be a themed border; on
51 most other platforms a sunken border will be used. For more
52 information for themed borders on Windows, please see Themed
55 Displays no border, overriding the default border style for the
56 window. wxNO_BORDER is the old name for this style.
57 @style{wxBORDER_DOUBLE}
58 This style is obsolete and should not be used.
59 @style{wxTRANSPARENT_WINDOW}
60 The window is transparent, that is, it will not receive paint
62 @style{wxTAB_TRAVERSAL}
63 Use this to enable tab traversal for non-dialog windows.
65 Use this to indicate that the window wants to get all char/key
66 events for all keys - even for keys like TAB or ENTER which are
67 usually used for dialog navigation and which wouldn't be generated
68 without this style. If you need to use this style in order to get
69 the arrows or etc., but would still like to have normal keyboard
70 navigation take place, you should call Navigate in response to the
71 key events for Tab and Shift-Tab.
72 @style{wxNO_FULL_REPAINT_ON_RESIZE}
73 On Windows, this style used to disable repainting the window
74 completely when its size is changed. Since this behaviour is now
75 the default, the style is now obsolete and no longer has an effect.
77 Use this style to enable a vertical scrollbar. Notice that this
78 style cannot be used with native controls which don't support
79 scrollbars nor with top-level windows in most ports.
81 Use this style to enable a horizontal scrollbar. The same
82 limitations as for wxVSCROLL apply to this style.
83 @style{wxALWAYS_SHOW_SB}
84 If a window has scrollbars, disable them instead of hiding them
85 when they are not needed (i.e. when the size of the window is big
86 enough to not require the scrollbars to navigate it). This style is
87 currently implemented for wxMSW, wxGTK and wxUniversal and does
88 nothing on the other platforms.
89 @style{wxCLIP_CHILDREN}
90 Use this style to eliminate flicker caused by the background being
91 repainted, then children being painted over them. Windows only.
92 @style{wxFULL_REPAINT_ON_RESIZE}
93 Use this style to force a complete redraw of the window whenever it
94 is resized instead of redrawing just the part of the window
95 affected by resizing. Note that this was the behaviour by default
96 before 2.5.1 release and that if you experience redraw problems
97 with code which previously used to work you may want to try this.
98 Currently this style applies on GTK+ 2 and Windows only, and full
99 repainting is always done on other platforms.
102 @beginExtraStyleTable
103 @style{wxWS_EX_VALIDATE_RECURSIVELY}
104 By default, Validate/TransferDataTo/FromWindow() only work on
105 direct children of the window (compatible behaviour). Set this flag
106 to make them recursively descend into all subwindows.
107 @style{wxWS_EX_BLOCK_EVENTS}
108 wxCommandEvents and the objects of the derived classes are
109 forwarded to the parent window and so on recursively by default.
110 Using this flag for the given window allows to block this
111 propagation at this window, i.e. prevent the events from being
112 propagated further upwards. Dialogs have this flag on by default.
113 @style{wxWS_EX_TRANSIENT}
114 Don't use this window as an implicit parent for the other windows:
115 this must be used with transient windows as otherwise there is the
116 risk of creating a dialog/frame with this window as a parent which
117 would lead to a crash if the parent is destroyed before the child.
118 @style{wxWS_EX_PROCESS_IDLE}
119 This window should always process idle events, even if the mode set
120 by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
121 @style{wxWS_EX_PROCESS_UI_UPDATES}
122 This window should always process UI update events, even if the
123 mode set by wxUpdateUIEvent::SetMode is
124 wxUPDATE_UI_PROCESS_SPECIFIED.
130 @see @ref overview_eventhandling "Event handling overview",
131 @ref overview_windowsizing "Window sizing overview"
133 class wxWindow
: public wxEvtHandler
142 Constructs a window, which can be a child of a frame, dialog or any other
146 Pointer to a parent window.
148 Window identifier. If wxID_ANY, will automatically create an identifier.
150 Window position. wxDefaultPosition indicates that wxWidgets
151 should generate a default position for the window. If using the wxWindow
152 class directly, supply
155 Window size. wxDefaultSize indicates that wxWidgets
156 should generate a default size for the window. If no suitable size can be
158 window will be sized to 20x20 pixels so that the window is visible but
162 Window style. For generic window styles, please see wxWindow.
166 wxWindow(wxWindow
* parent
, wxWindowID id
,
167 const wxPoint
& pos
= wxDefaultPosition
,
168 const wxSize
& size
= wxDefaultSize
,
170 const wxString
& name
= wxPanelNameStr
);
173 Destructor. Deletes all sub-windows, then deletes itself. Instead of using
174 the @b delete operator explicitly, you should normally
175 use Destroy() so that wxWidgets
176 can delete a window only when it is safe to do so, in idle time.
178 @see @ref overview_windowdeletionoverview "Window deletion overview",
179 Destroy(), wxCloseEvent
184 This method may be overridden in the derived classes to return @false to
185 indicate that this control doesn't accept input at all (i.e. behaves like e.g.
186 wxStaticText) and so doesn't need focus.
188 @see AcceptsFocusFromKeyboard()
190 virtual bool AcceptsFocus() const;
193 This method may be overridden in the derived classes to return @false to
194 indicate that while this control can, in principle, have focus if the user
195 clicks it with the mouse, it shouldn't be included in the TAB traversal chain
196 when using the keyboard.
198 virtual bool AcceptsFocusFromKeyboard() const;
201 Overridden to indicate wehter this window or one of its children accepts
202 focus. Usually it's the same as AcceptsFocus() but is overridden for
205 virtual bool AcceptsFocusRecursively() const;
208 Adds a child window. This is called automatically by window creation
209 functions so should not be required by the application programmer.
210 Notice that this function is mostly internal to wxWidgets and shouldn't be
211 called by the user code.
216 virtual void AddChild(wxWindow
* child
);
219 Call this function to force one or both scrollbars to be always shown, even if
220 the window is big enough to show its entire contents without scrolling.
225 Whether the horizontal scroll bar should always be visible.
227 Whether the vertical scroll bar should always be visible.
229 @remarks This function is currently only implemented under Mac/Carbon.
231 void AlwaysShowScrollbars(bool hflag
, bool vflag
);
234 Sets the cached best size value.
236 void CacheBestSize(const wxSize
& size
) const;
239 Returns @true if the system supports transparent windows and calling
240 SetTransparent() may succeed. If this function
241 returns @false, transparent windows are definitely not supported by the
245 bool CanSetTransparent();
248 Directs all mouse input to this window. Call ReleaseMouse() to
250 Note that wxWidgets maintains the stack of windows having captured the mouse
251 and when the mouse is released the capture returns to the window which had had
252 captured it previously and it is only really released if there were no previous
253 window. In particular, this means that you must release the mouse as many times
254 as you capture it, unless the window receives
255 the wxMouseCaptureLostEvent event.
256 Any application which captures the mouse in the beginning of some operation
257 must handle wxMouseCaptureLostEvent
258 and cancel this operation when it receives the event. The event handler must
261 @see ReleaseMouse(), wxMouseCaptureLostEvent
263 virtual void CaptureMouse();
266 A synonym for Centre().
268 void Center(int direction
);
271 A synonym for CentreOnParent().
273 void CenterOnParent(int direction
);
279 Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
280 or wxBOTH. It may also include wxCENTRE_ON_SCREEN flag
281 if you want to center the window on the entire screen and not on its
284 @remarks If the window is a top level one (i.e. doesn't have a parent),
285 it will be centered relative to the screen anyhow.
289 void Centre(int direction
= wxBOTH
);
292 Centres the window on its parent. This is a more readable synonym for
296 Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
299 @remarks This methods provides for a way to center top level windows over
300 their parents instead of the entire screen. If there
301 is no parent or if the window is not a top level
302 window, then behaviour is the same as Centre().
304 @see wxTopLevelWindow::CentreOnScreen
306 void CentreOnParent(int direction
= wxBOTH
);
309 Clears the window by filling it with the current background colour. Does not
310 cause an erase background event to be generated.
312 void ClearBackground();
316 Converts to screen coordinates from coordinates relative to this window.
319 A pointer to a integer value for the x coordinate. Pass the client
321 a screen coordinate will be passed out.
323 A pointer to a integer value for the y coordinate. Pass the client
325 a screen coordinate will be passed out.
327 The client position for the second form of the function.
329 void ClientToScreen(int* x
, int* y
) const;
330 wxPoint
ClientToScreen(const wxPoint
& pt
) const;
334 Converts client area size @a size to corresponding window size. In
335 other words, the returned value is what would GetSize() return if this
336 window had client area of given size. Components with wxDefaultCoord
337 value are left unchanged. Note that the conversion is not always
338 exact, it assumes that non-client area doesn't change and so doesn't
339 take into account things like menu bar (un)wrapping or (dis)appearance
344 @see WindowToClientSize()
346 virtual wxSize
ClientToWindowSize(const wxSize
& size
);
349 Converts window size @a size to corresponding client area size. In
350 other words, the returned value is what would GetClientSize() return if
351 this window had given window size. Components with wxDefaultCoord value
354 Note that the conversion is not always exact, it assumes that
355 non-client area doesn't change and so doesn't take into account things
356 like menu bar (un)wrapping or (dis)appearance of the scrollbars.
360 @see ClientToWindowSize()
362 virtual wxSize
WindowToClientSize(const wxSize
& size
);
365 This function simply generates a wxCloseEvent whose
366 handler usually tries to close the window. It doesn't close the window
370 @false if the window's close handler should be able to veto the destruction
371 of this window, @true if it cannot.
373 @remarks Close calls the close handler for the window, providing an
374 opportunity for the window to choose whether to destroy
375 the window. Usually it is only used with the top level
376 windows (wxFrame and wxDialog classes) as the others
377 are not supposed to have any special OnClose() logic.
379 @see @ref overview_windowdeletionoverview "Window deletion overview",
380 Destroy(), wxCloseEvent
382 bool Close(bool force
= false);
386 Converts a point or size from dialog units to pixels.
387 For the x dimension, the dialog units are multiplied by the average character
389 and then divided by 4.
390 For the y dimension, the dialog units are multiplied by the average character
392 and then divided by 8.
394 @remarks Dialog units are used for maintaining a dialog's proportions
395 even if the font changes.
397 @see ConvertPixelsToDialog()
399 wxPoint
ConvertDialogToPixels(const wxPoint
& pt
);
400 wxSize
ConvertDialogToPixels(const wxSize
& sz
);
405 Converts a point or size from pixels to dialog units.
406 For the x dimension, the pixels are multiplied by 4 and then divided by the
409 For the y dimension, the pixels are multiplied by 8 and then divided by the
413 @remarks Dialog units are used for maintaining a dialog's proportions
414 even if the font changes.
416 @see ConvertDialogToPixels()
418 wxPoint
ConvertPixelsToDialog(const wxPoint
& pt
);
419 wxSize
ConvertPixelsToDialog(const wxSize
& sz
);
423 Destroys the window safely. Use this function instead of the delete operator,
425 different window classes can be destroyed differently. Frames and dialogs
426 are not destroyed immediately when this function is called -- they are added
427 to a list of windows to be deleted on idle time, when all the window's events
428 have been processed. This prevents problems with events being sent to
432 @return @true if the window has either been successfully deleted, or it
433 has been added to the list of windows pending real
436 virtual bool Destroy();
439 Destroys all children of a window. Called automatically by the destructor.
441 virtual void DestroyChildren();
444 Disables the window, same as @ref enable() Enable(@false).
446 @return Returns @true if the window has been disabled, @false if it had
447 been already disabled before the call to this function.
452 Gets the size which best suits the window: for a control, it would be
453 the minimal size which doesn't truncate the control, for a panel - the
454 same size as it would have after a call to Fit().
456 The default implementation of this function is designed for use in container
457 windows, such as wxPanel, and works something like this:
458 -# If the window has a sizer then it is used to calculate the best size.
459 -# Otherwise if the window has layout constraints then those are used to
460 calculate the best size.
461 -# Otherwise if the window has children then the best size is set to be large
462 enough to show all the children.
463 -# Otherwise if there are no children then the window's minimal size will be
464 used as its best size.
465 -# Otherwise if there is no minimal size set, then the current size is used
468 @see @ref overview_windowsizing
470 virtual wxSize
DoGetBestSize() const;
473 Does the window-specific updating after processing the update event.
474 This function is called by UpdateWindowUI()
475 in order to check return values in the wxUpdateUIEvent and
476 act appropriately. For example, to allow frame and dialog title updating,
478 implements this function as follows:
480 virtual void DoUpdateWindowUI(wxUpdateUIEvent
& event
);
483 Enables or disables eligibility for drop file events (OnDropFiles).
486 If @true, the window is eligible for drop file events. If @false, the window
487 will not accept drop file events.
489 @remarks Windows only.
491 virtual void DragAcceptFiles(bool accept
);
494 Enable or disable the window for user input. Note that when a parent window is
495 disabled, all of its children are disabled as well and they are reenabled again
499 If @true, enables the window for input. If @false, disables the window.
501 @return Returns @true if the window has been enabled or disabled, @false
502 if nothing was done, i.e. if the window had already
503 been in the specified state.
505 @see IsEnabled(), Disable(), wxRadioBox::Enable
507 virtual bool Enable(bool enable
= true);
510 Finds the window or control which currently has the keyboard focus.
512 @remarks Note that this is a static function, so it can be called without
513 needing a wxWindow pointer.
515 @see SetFocus(), HasFocus()
517 static wxWindow
* FindFocus();
520 Find a child of this window, by @a id. May return @a this if
523 wxWindow
* FindWindow(long id
) const;
527 Find a child of this window, by name. May return @a this if
530 wxWindow
* FindWindow(const wxString
& name
) const;
533 Find the first window with the given @e id.
534 If @a parent is @NULL, the search will start from all top-level
535 frames and dialog boxes; if non-@NULL, the search will be limited to the given
537 The search is recursive in both cases.
541 static wxWindow
* FindWindowById(long id
, wxWindow
* parent
= NULL
);
544 Find a window by its label. Depending on the type of window, the label may be a
546 or panel item label. If @a parent is @NULL, the search will start from all
548 frames and dialog boxes; if non-@NULL, the search will be limited to the given
550 The search is recursive in both cases.
554 static wxWindow
* FindWindowByLabel(const wxString
& label
,
555 wxWindow
* parent
= NULL
);
558 Find a window by its name (as given in a window constructor or @b Create
560 If @a parent is @NULL, the search will start from all top-level
561 frames and dialog boxes; if non-@NULL, the search will be limited to the given
563 The search is recursive in both cases.
564 If no window with such name is found,
565 FindWindowByLabel() is called.
569 static wxWindow
* FindWindowByName(const wxString
& name
,
570 wxWindow
* parent
= NULL
);
573 Sizes the window so that it fits around its subwindows.
575 This function won't do anything if there are no subwindows and will only really
576 work correctly if sizers are used for the subwindows layout.
578 Also, if the window has exactly one subwindow it is better (faster and the result
579 is more precise as Fit() adds some margin to account for fuzziness of its calculations)
583 window->SetClientSize(child->GetSize());
586 instead of calling Fit().
588 @see @ref overview_windowsizing
593 Similar to Fit(), but sizes the interior (virtual) size
594 of a window. Mainly useful with scrolled windows to reset scrollbars after
595 sizing changes that do not trigger a size event, and/or scrolled windows without
596 an interior sizer. This function similarly won't do anything if there are no
599 virtual void FitInside();
602 Freezes the window or, in other words, prevents any updates from taking
603 place on screen, the window is not redrawn at all.
605 Thaw() must be called to reenable window redrawing. Calls to these two
606 functions may be nested but to ensure that the window is properly
607 repainted again, you must thaw it exactly as many times as you froze
610 If the window has any children, they are recursively frozen too.
612 This method is useful for visual appearance optimization (for example,
613 it is a good idea to use it before doing many large text insertions in
614 a row into a wxTextCtrl under wxGTK) but is not implemented on all
615 platforms nor for all controls so it is mostly just a hint to wxWidgets
616 and not a mandatory directive.
618 @see wxWindowUpdateLocker, Thaw(), IsFrozen()
620 virtual void Freeze();
623 Gets the accelerator table for this window. See wxAcceleratorTable.
625 wxAcceleratorTable
* GetAcceleratorTable() const;
628 Returns the accessible object for this window, if any.
629 See also wxAccessible.
631 wxAccessible
* GetAccessible();
634 This method is deprecated, use GetEffectiveMinSize() instead.
636 wxSize
GetAdjustedBestSize() const;
639 Returns the background colour of the window.
641 @see SetBackgroundColour(), SetForegroundColour(),
642 GetForegroundColour()
644 wxColour
GetBackgroundColour() const;
647 Returns the background style of the window. The background style can be one of:
651 Use the default background, as determined by
652 the system or the current theme.
656 Use a solid colour for the background, this
657 style is set automatically if you call
658 SetBackgroundColour() so you only need to
659 set it explicitly if you had changed the background style to something else
664 Don't draw the background at all, it's
665 supposed that it is drawn by the user-defined erase background event handler.
666 This style should be used to avoid flicker when the background is entirely
669 wxBG_STYLE_TRANSPARET
671 The background is (partially) transparent,
672 this style is automatically set if you call
673 SetTransparent() which is used to set the
676 @see SetBackgroundColour(), GetForegroundColour(),
677 SetBackgroundStyle(), SetTransparent()
679 virtual wxBackgroundStyle
GetBackgroundStyle() const;
682 This functions returns the best acceptable minimal size for the window. For
683 example, for a static control, it will be the minimal size such that the
684 control label is not truncated. For windows containing subwindows (typically
685 wxPanel), the size returned by this function will be the
686 same as the size the window would have had after calling
689 wxSize
GetBestSize() const;
692 Returns the currently captured window.
694 @see HasCapture(), CaptureMouse(), ReleaseMouse(),
695 wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
697 static wxWindow
* GetCapture();
700 Returns the caret() associated with the window.
702 wxCaret
* GetCaret() const;
705 Returns the character height for this window.
707 virtual int GetCharHeight() const;
710 Returns the average character width for this window.
712 virtual int GetCharWidth() const;
716 Returns a reference to the list of the window's children. @c wxWindowList
717 is a type-safe wxList-like class whose elements are of type @c wxWindow*.
719 wxWindowList
& GetChildren();
720 const wxWindowList
& GetChildren() const;
724 Returns the default font and colours which are used by the control. This is
725 useful if you want to use the same font or colour in your own control as in a
726 standard control -- which is a much better idea than hard coding specific
727 colours or fonts which might look completely out of place on the users
728 system, especially if it uses themes.
729 The @a variant parameter is only relevant under Mac currently and is
730 ignore under other platforms. Under Mac, it will change the size of the
731 returned font. See SetWindowVariant()
733 This static method is "overridden" in many derived classes and so calling,
734 for example, wxButton::GetClassDefaultAttributes() will typically
735 return the values appropriate for a button which will be normally different
736 from those returned by, say, wxListCtrl::GetClassDefaultAttributes().
737 The @c wxVisualAttributes structure has at least the fields
738 @c font, @c colFg and @c colBg. All of them may be invalid
739 if it was not possible to determine the default control appearance or,
740 especially for the background colour, if the field doesn't make sense as is
741 the case for @c colBg for the controls with themed background.
743 @see InheritAttributes()
745 static wxVisualAttributes
GetClassDefaultAttributes(wxWindowVariant variant
= wxWINDOW_VARIANT_NORMAL
);
749 Returns the size of the window 'client area' in pixels. The client area is the
750 area which may be drawn on by the programmer, excluding title bar, border,
752 Note that if this window is a top-level one and it is currently minimized, the
753 return size is empty (both width and height are 0).
756 Receives the client width in pixels.
758 Receives the client height in pixels.
760 @see GetSize(), GetVirtualSize()
762 void GetClientSize(int* width
, int* height
) const;
763 wxSize
GetClientSize() const;
767 Returns a pointer to the window's layout constraints, or @NULL if there are none.
769 wxLayoutConstraints
* GetConstraints() const;
772 Return the sizer that this window is a member of, if any, otherwise
775 wxSizer
* GetContainingSizer() const;
778 Return the cursor associated with this window.
782 const wxCursor
& GetCursor() const;
785 Currently this is the same as calling
786 wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
787 One advantage of using this function compared to the static version is that
788 the call is automatically dispatched to the correct class (as usual with
789 virtual functions) and you don't have to specify the class name explicitly.
790 The other one is that in the future this function could return different
791 results, for example it might return a different font for an "Ok" button
792 than for a generic button if the users GUI is configured to show such buttons
793 in bold font. Of course, the down side is that it is impossible to call this
794 function without actually having an object to apply it to whereas the static
795 version can be used without having to create an object first.
797 virtual wxVisualAttributes
GetDefaultAttributes() const;
800 Returns the associated drop target, which may be @NULL.
802 @see SetDropTarget(), @ref overview_wxdndoverview
804 wxDropTarget
* GetDropTarget() const;
807 Merges the window's best size into the min size and returns the result.
808 This is the value used by sizers to determine the appropriate
809 ammount of space to allocate for the widget.
811 @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
813 wxSize
GetEffectiveMinSize() const;
816 Returns the event handler for this window. By default, the window is its
819 @see SetEventHandler(), PushEventHandler(),
820 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
822 wxEvtHandler
* GetEventHandler() const;
825 Returns the extra style bits for the window.
827 long GetExtraStyle() const;
830 Returns the font for this window.
834 wxFont
GetFont() const;
837 Returns the foreground colour of the window.
839 @remarks The interpretation of foreground colour is open to
840 interpretation according to the window class; it may be
841 the text colour or other colour, or it may not be used
844 @see SetForegroundColour(), SetBackgroundColour(),
845 GetBackgroundColour()
847 wxColour
GetForegroundColour();
850 Returns the grandparent of a window, or @NULL if there isn't one.
852 wxWindow
* GetGrandParent() const;
855 Returns the platform-specific handle of the physical window. Cast it to an
857 handle, such as @b HWND for Windows, @b Widget for Motif, @b GtkWidget for GTK
858 or @b WinHandle for PalmOS.
860 void* GetHandle() const;
863 Gets the help text to be used as context-sensitive help for this window.
864 Note that the text is actually stored by the current wxHelpProvider
866 and not in the window object itself.
868 @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
870 virtual wxString
GetHelpText() const;
873 Gets the help text to be used as context-sensitive help for this window. This
874 method should be overridden if the help message depends on the position inside
875 the window, otherwise GetHelpText() can be used.
878 Coordinates of the mouse at the moment of help event emission.
880 Help event origin, see also wxHelpEvent::GetOrigin.
882 virtual wxString
GetHelpTextAtPoint(const wxPoint point
,
883 wxHelpEvent::Origin origin
) const;
886 Returns the identifier of the window.
888 @remarks Each window has an integer identifier. If the application has
889 not provided one (or the default wxID_ANY) an unique
890 identifier with a negative value will be generated.
892 @see SetId(), @ref overview_windowids "Window identifiers"
897 Generic way of getting a label from any window, for
898 identification purposes.
900 @remarks The interpretation of this function differs from class to class.
901 For frames and dialogs, the value returned is the
902 title. For buttons or static text controls, it is the
903 button text. This function can be useful for
904 meta-programs (such as testing tools or special-needs
905 access programs) which need to identify windows by name.
907 virtual wxString
GetLabel() const;
910 Returns the maximum size of window's client area.
911 This is an indication to the sizer layout mechanism that this is the maximum
912 possible size as well as the upper bound on window's size settable using
917 wxSize
GetMaxClientSize() const;
920 Returns the maximum size of the window. This is an indication to the sizer
921 layout mechanism that this is the maximum possible size as well as the upper
922 bound on window's size settable using SetSize().
924 @see GetMaxClientSize()
926 wxSize
GetMaxSize() const;
929 Returns the minimum size of window's client area, an indication to the sizer
930 layout mechanism that this is the minimum required size of its client area. It
931 normally just returns the value set by
932 SetMinClientSize(), but it can be overridden
933 to do the calculation on demand.
937 virtual wxSize
GetMinClientSize() const;
940 Returns the minimum size of the window, an indication to the sizer layout
941 mechanism that this is the minimum required size.
943 This method normally just returns the value set by SetMinSize(), but it
944 can be overridden to do the calculation on demand.
946 @see GetMinClientSize()
948 virtual wxSize
GetMinSize() const;
951 Returns the window's name.
953 @remarks This name is not guaranteed to be unique; it is up to the
954 programmer to supply an appropriate name in the window
955 constructor or via SetName().
959 virtual wxString
GetName() const;
962 Returns the next window after this one among the parent children or @NULL if
963 this window is the last child.
967 @see GetPrevSibling()
969 wxWindow
* GetNextSibling() const;
972 Returns the parent of the window, or @NULL if there is no parent.
974 virtual wxWindow
* GetParent() const;
978 This function shows a popup menu at the given position in this window and
979 returns the selected id. It can be more convenient than the general purpose
980 PopupMenu() function for simple menus proposing a
981 choice in a list of strings to the user.
986 The position at which to show the menu in client coordinates
988 The horizontal position of the menu
990 The vertical position of the menu
992 @return The selected menu item id or wxID_NONE if none selected or an
995 int GetPopupMenuSelectionFromUser(wxMenu
& menu
,
997 int GetPopupMenuSelectionFromUser(wxMenu
& menu
, int x
, int y
);
1002 This gets the position of the window in pixels, relative to the parent window
1003 for the child windows or relative to the display origin for the top level
1007 Receives the x position of the window if non-@NULL.
1009 Receives the y position of the window if non-@NULL.
1011 @see GetScreenPosition()
1013 void GetPosition(int* x
, int* y
) const;
1014 wxPoint
GetPosition() const;
1018 Returns the previous window before this one among the parent children or @c
1020 this window is the first child.
1024 @see GetNextSibling()
1026 wxWindow
* GetPrevSibling() const;
1029 Returns the position and size of the window as a wxRect object.
1031 @see GetScreenRect()
1033 wxRect
GetRect() const;
1037 Returns the window position in screen coordinates, whether the window is a
1038 child window or a top level one.
1041 Receives the x position of the window on the screen if non-@NULL.
1043 Receives the y position of the window on the screen if non-@NULL.
1047 void GetScreenPosition(int* x
, int* y
) const;
1048 wxPoint
GetScreenPosition() const;
1052 Returns the position and size of the window on the screen as a
1057 wxRect
GetScreenRect() const;
1060 Returns the built-in scrollbar position.
1062 @see See SetScrollbar()
1064 virtual int GetScrollPos(int orientation
);
1067 Returns the built-in scrollbar range.
1071 virtual int GetScrollRange(int orientation
);
1074 Returns the built-in scrollbar thumb size.
1078 virtual int GetScrollThumb(int orientation
);
1082 Returns the size of the entire window in pixels, including title bar, border,
1084 Note that if this window is a top-level one and it is currently minimized, the
1085 returned size is the restored window size, not the size of the window icon.
1088 Receives the window width.
1090 Receives the window height.
1092 @see GetClientSize(), GetVirtualSize()
1094 void GetSize(int* width
, int* height
) const;
1095 const wxSize
GetSize() const;
1099 Return the sizer associated with the window by a previous call to
1100 SetSizer() or @NULL.
1102 wxSizer
* GetSizer() const;
1106 Gets the dimensions of the string as it would be drawn on the
1107 window with the currently selected font.
1108 The text extent is returned in @a w and @a h pointers (first form) or as a
1109 wxSize object (second form).
1112 String whose extent is to be measured.
1114 Return value for width.
1116 Return value for height.
1118 Return value for descent (optional).
1119 @param externalLeading
1120 Return value for external leading (optional).
1122 Font to use instead of the current window font (optional).
1124 If @true, string contains 16-bit characters. The default is @false.
1126 virtual void GetTextExtent(const wxString
& string
, int* w
,
1128 int* descent
= NULL
,
1129 int* externalLeading
= NULL
,
1130 const wxFont
* font
= NULL
,
1131 bool use16
= false) const;
1132 const wxSize
GetTextExtent(const wxString
& string
) const;
1136 Get the associated tooltip or @NULL if none.
1138 wxToolTip
* GetToolTip() const;
1141 Returns the region specifying which parts of the window have been damaged.
1143 only be called within an wxPaintEvent handler.
1145 @see wxRegion, wxRegionIterator
1147 virtual wxRegion
GetUpdateRegion() const;
1150 Returns a pointer to the current validator for the window, or @NULL if there is
1153 wxValidator
* GetValidator() const;
1157 This gets the virtual size of the window in pixels. By default it
1158 returns the client size of the window, but after a call to
1159 SetVirtualSize() it will return
1163 Receives the window virtual width.
1165 Receives the window virtual height.
1167 void GetVirtualSize(int* width
, int* height
) const;
1168 const wxSize
GetVirtualSize() const;
1172 Returns the size of the left/right and top/bottom borders of this window in x
1173 and y components of the result respectively.
1175 wxSize
GetWindowBorderSize() const;
1178 Gets the window style that was passed to the constructor or @b Create
1179 method. @b GetWindowStyle() is another name for the same function.
1181 long GetWindowStyleFlag() const;
1184 Returns the value previously passed to
1187 wxWindowVariant
GetWindowVariant() const;
1190 This function will generate the appropriate call to
1191 Navigate() if the key event is one normally used for
1192 keyboard navigation and return @true in this case.
1194 @return Returns @true if the key pressed was for navigation and was
1195 handled, @false otherwise.
1199 bool HandleAsNavigationKey(const wxKeyEvent
& event
);
1203 wxWindow::GetEventHandler()-wxEvtHandler::SafelyProcessEvent(event).
1205 bool HandleWindowEvent(wxEvent
& event
);
1208 Returns @true if this window has the current mouse capture.
1210 @see CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
1211 wxMouseCaptureChangedEvent
1213 virtual bool HasCapture() const;
1216 Returns @true if the window has the given @a exFlag bit set in its
1219 @see SetExtraStyle()
1221 bool HasExtraStyle(int exFlag
) const;
1224 Returns @true if the window has the given @a flag bit set.
1226 bool HasFlag(int flag
) const;
1229 Returns @true if the window (or in case of composite controls, its main
1230 child window) has focus.
1234 virtual bool HasFocus() const;
1237 This method should be overridden to return @true if this window has
1238 multiple pages. All standard class with multiple pages such as
1239 wxNotebook, wxListbook and
1240 wxTreebook already override it to return @true
1241 and user-defined classes with similar behaviour should do it as well to allow
1242 the library to handle such windows appropriately.
1244 virtual bool HasMultiplePages() const;
1247 Returns @true if this window has a scroll bar for this orientation.
1250 Orientation to check, either wxHORIZONTAL or wxVERTICAL.
1252 virtual bool HasScrollbar(int orient
) const;
1255 Returns @true if this window background is transparent (as, for example, for
1256 wxStaticText) and should show the parent window background.
1257 This method is mostly used internally by the library itself and you normally
1258 shouldn't have to call it. You may, however, have to override it in your
1259 wxWindow-derived class to ensure that background is painted correctly.
1261 virtual bool HasTransparentBackground() const;
1264 Equivalent to calling wxWindow::Show(@false).
1269 This function hides a window, like Hide(), but using a special visual
1272 The parameters of this function are the same as for ShowWithEffect(),
1273 please see their description there.
1277 virtual bool HideWithEffect(wxShowEffect effect
,
1278 unsigned timeout
= 0);
1281 This function is (or should be, in case of custom controls) called during
1282 window creation to intelligently set up the window visual attributes, that is
1283 the font and the foreground and background colours.
1284 By "intelligently" the following is meant: by default, all windows use their
1285 own @ref getclassdefaultattributes() default attributes. However
1286 if some of the parents attributes are explicitly (that is, using
1288 wxWindow::SetOwnFont) changed and if the
1289 corresponding attribute hadn't been explicitly set for this window itself,
1290 then this window takes the same value as used by the parent. In addition, if
1291 the window overrides ShouldInheritColours()
1292 to return @false, the colours will not be changed no matter what and only the
1294 This rather complicated logic is necessary in order to accommodate the
1295 different usage scenarios. The most common one is when all default attributes
1296 are used and in this case, nothing should be inherited as in modern GUIs
1297 different controls use different fonts (and colours) than their siblings so
1298 they can't inherit the same value from the parent. However it was also deemed
1299 desirable to allow to simply change the attributes of all children at once by
1300 just changing the font or colour of their common parent, hence in this case we
1301 do inherit the parents attributes.
1303 void InheritAttributes();
1306 Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
1307 to the dialog via validators.
1312 Resets the cached best size value so it will be recalculated the next time it
1315 void InvalidateBestSize();
1318 Returns @true if the window contents is double-buffered by the system, i.e. if
1319 any drawing done on the window is really done on a temporary backing surface
1320 and transferred to the screen all at once later.
1324 virtual bool IsDoubleBuffered() const;
1327 Returns @true if the window is enabled, i.e. if it accepts user input, @c
1330 Notice that this method can return @false even if this window itself hadn't
1331 been explicitly disabled when one of its parent windows is disabled. To get the
1332 intrinsic status of this window, use
1337 virtual bool IsEnabled() const;
1341 Returns @true if the given point or rectangle area has been exposed since the
1342 last repaint. Call this in an paint event handler to optimize redrawing by
1343 only redrawing those areas, which have been exposed.
1345 bool IsExposed(int x
, int y
) const;
1346 const bool IsExposed(wxPoint amp
;pt
) const;
1347 const bool IsExposed(int x
, int y
, int w
, int h
) const;
1348 const bool IsExposed(wxRect amp
;rect
) const;
1352 Returns @true if the window is currently frozen by a call to
1355 @see Freeze(), Thaw()
1357 virtual bool IsFrozen() const;
1360 Returns @true if the window is retained, @false otherwise.
1362 @remarks Retained windows are only available on X platforms.
1364 virtual bool IsRetained() const;
1367 Return whether a scrollbar is always shown.
1370 Orientation to check, either wxHORIZONTAL or wxVERTICAL.
1372 @see AlwaysShowScrollbars()
1374 bool IsScrollbarAlwaysShown(int orient
);
1377 Returns @true if the window is shown, @false if it has been hidden.
1379 @see IsShownOnScreen()
1381 virtual bool IsShown() const;
1384 Returns @true if the window is physically visible on the screen, i.e. it
1385 is shown and all its parents up to the toplevel window are shown as well.
1389 virtual bool IsShownOnScreen() const;
1392 Returns @true if this window is intrinsically enabled, @false otherwise,
1394 if @ref enable() Enable(@false) had been called. This method is
1395 mostly used for wxWidgets itself, user code should normally use
1396 IsEnabled() instead.
1398 bool IsThisEnabled() const;
1401 Returns @true if the given window is a top-level one. Currently all frames and
1402 dialogs are considered to be top-level windows (even if they have a parent
1405 bool IsTopLevel() const;
1408 Invokes the constraint-based layout algorithm or the sizer-based algorithm
1411 See SetAutoLayout(): when auto layout is on, this function gets called automatically
1412 when the window is resized.
1414 @see @ref overview_windowsizing
1419 Lowers the window to the bottom of the window hierarchy (Z-order).
1426 Disables all other windows in the application so that
1427 the user can only interact with this window.
1430 If @true, this call disables all other windows in the application so that
1431 the user can only interact with this window. If @false, the effect is
1434 virtual void MakeModal(bool flag
);
1438 Moves the window to the given position.
1441 Required x position.
1443 Required y position.
1445 wxPoint object representing the position.
1447 @remarks Implementations of SetSize can also implicitly implement the
1448 Move() function, which is defined in the base
1449 wxWindow class as the call:
1453 void Move(int x
, int y
);
1454 void Move(const wxPoint
& pt
);
1458 Moves this window in the tab navigation order after the specified @e win.
1459 This means that when the user presses @c TAB key on that other window,
1460 the focus switches to this window.
1461 Default tab order is the same as creation order, this function and
1462 MoveBeforeInTabOrder() allow to change
1463 it after creating all the windows.
1466 A sibling of this window which should precede it in tab order,
1469 void MoveAfterInTabOrder(wxWindow
* win
);
1472 Same as MoveAfterInTabOrder() except that
1473 it inserts this window just before @a win instead of putting it right after
1476 void MoveBeforeInTabOrder(wxWindow
* win
);
1479 Performs a keyboard navigation action starting from this window. This method is
1480 equivalent to calling NavigateIn() method on the
1484 A combination of wxNavigationKeyEvent::IsForward and
1485 wxNavigationKeyEvent::WinChange.
1487 @return Returns @true if the focus was moved to another window or @false
1490 @remarks You may wish to call this from a text control custom keypress
1491 handler to do the default navigation behaviour for the
1492 tab key, since the standard default behaviour for a
1493 multiline text control with the wxTE_PROCESS_TAB style
1494 is to insert a tab and not navigate to the next
1495 control. See also wxNavigationKeyEvent and
1496 HandleAsNavigationKey.
1498 bool Navigate(int flags
= wxNavigationKeyEvent::IsForward
);
1501 Performs a keyboard navigation action inside this window.
1502 See Navigate() for more information.
1504 bool NavigateIn(int flags
= wxNavigationKeyEvent::IsForward
);
1507 Create a new ID or range of IDs that are not currently in use. The
1508 IDs will be reserved until assigned to a wxWindowIDRef()
1509 or unreserved with UnreserveControlId().
1510 See @ref overview_windowidsoverview "Window IDs overview" for more information.
1513 The number of sequential IDs to reserve.
1515 @return Returns the ID or the first ID of the range, or wxID_NONE if the
1516 specified number of identifiers couldn't be allocated.
1518 @see UnreserveControlId(), wxIdManager, @ref overview_windowidsoverview
1519 "Window IDs overview"
1521 static wxWindowID
NewControlId(int count
= 1);
1524 This virtual function is normally only used internally, but
1525 sometimes an application may need it to implement functionality
1526 that should not be disabled by an application defining an OnIdle
1527 handler in a derived class.
1528 This function may be used to do delayed painting, for example,
1529 and most implementations call UpdateWindowUI()
1530 in order to send update events to the window in idle time.
1532 virtual void OnInternalIdle();
1535 Same as #ScrollLines (-1).
1540 Same as #ScrollLines (1).
1545 Same as #ScrollPages (-1).
1550 Same as #ScrollPages (1).
1556 Removes and returns the top-most event handler on the event handler stack.
1558 @param deleteHandler
1559 If this is @true, the handler will be deleted after it is removed. The
1560 default value is @false.
1562 @see SetEventHandler(), GetEventHandler(),
1563 PushEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1565 wxEvtHandler
* PopEventHandler(bool deleteHandler
= false) const;
1569 Pops up the given menu at the specified coordinates, relative to this
1570 window, and returns control when the user has dismissed the menu. If a
1571 menu item is selected, the corresponding menu event is generated and will be
1572 processed as usually. If the coordinates are not specified, current mouse
1573 cursor position is used.
1578 The position where the menu will appear.
1580 Required x position for the menu to appear.
1582 Required y position for the menu to appear.
1584 @remarks Just before the menu is popped up, wxMenu::UpdateUI is called to
1585 ensure that the menu items are in the correct state.
1586 The menu does not get deleted by the window.
1590 bool PopupMenu(wxMenu
* menu
,
1591 const wxPoint
& pos
= wxDefaultPosition
);
1592 bool PopupMenu(wxMenu
* menu
, int x
, int y
);
1596 Pushes this event handler onto the event stack for the window.
1599 Specifies the handler to be pushed.
1601 @remarks An event handler is an object that is capable of processing the
1602 events sent to a window. By default, the window is its
1603 own event handler, but an application may wish to
1604 substitute another, for example to allow central
1605 implementation of event-handling for a variety of
1606 different window classes.
1608 @see SetEventHandler(), GetEventHandler(),
1609 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1611 void PushEventHandler(wxEvtHandler
* handler
);
1614 Raises the window to the top of the window hierarchy (Z-order).
1615 In current version of wxWidgets this works both for managed and child windows.
1622 Causes this window, and all of its children recursively (except under wxGTK1
1623 where this is not implemented), to be repainted. Note that repainting doesn't
1624 happen immediately but only during the next event loop iteration, if you need
1625 to update the window immediately you should use Update()
1628 @param eraseBackground
1629 If @true, the background will be
1632 If non-@NULL, only the given rectangle will
1633 be treated as damaged.
1637 virtual void Refresh(bool eraseBackground
= true,
1638 const wxRect
* rect
= NULL
);
1641 Redraws the contents of the given rectangle: only the area inside it will be
1643 This is the same as Refresh() but has a nicer syntax
1644 as it can be called with a temporary wxRect object as argument like this
1645 @c RefreshRect(wxRect(x, y, w, h)).
1647 void RefreshRect(const wxRect
& rect
, bool eraseBackground
= true);
1650 Registers a system wide hotkey. Every time the user presses the hotkey
1651 registered here, this window
1652 will receive a hotkey event. It will receive the event even if the application
1653 is in the background
1654 and does not have the input focus because the user is working with some other
1658 Numeric identifier of the hotkey. For applications this must be between 0
1660 this function is called from a shared DLL, it must be a system wide unique
1661 identifier between 0xC000 and 0xFFFF.
1662 This is a MSW specific detail.
1664 A bitwise combination of wxMOD_SHIFT, wxMOD_CONTROL, wxMOD_ALT
1665 or wxMOD_WIN specifying the modifier keys that have to be pressed along
1667 @param virtualKeyCode
1668 The virtual key code of the hotkey.
1670 @return @true if the hotkey was registered successfully. @false if some
1671 other application already registered a hotkey with this
1672 modifier/virtualKeyCode combination.
1674 @remarks Use EVT_HOTKEY(hotkeyId, fnc) in the event table to capture the
1675 event. This function is currently only implemented
1676 under Windows. It is used in the Windows CE port for
1677 detecting hardware button presses.
1679 @see UnregisterHotKey()
1681 bool RegisterHotKey(int hotkeyId
, int modifiers
,
1682 int virtualKeyCode
);
1685 Releases mouse input captured with CaptureMouse().
1687 @see CaptureMouse(), HasCapture(), ReleaseMouse(),
1688 wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
1690 virtual void ReleaseMouse();
1693 Removes a child window. This is called automatically by window deletion
1694 functions so should not be required by the application programmer.
1695 Notice that this function is mostly internal to wxWidgets and shouldn't be
1696 called by the user code.
1699 Child window to remove.
1701 virtual void RemoveChild(wxWindow
* child
);
1704 Find the given @a handler in the windows event handler chain and remove (but
1705 not delete) it from it.
1708 The event handler to remove, must be non-@NULL and
1709 must be present in this windows event handlers chain
1711 @return Returns @true if it was found and @false otherwise (this also
1712 results in an assert failure so this function should
1713 only be called when the handler is supposed to be
1716 @see PushEventHandler(), PopEventHandler()
1718 bool RemoveEventHandler(wxEvtHandler
* handler
);
1721 Reparents the window, i.e the window will be removed from its
1722 current parent window (e.g. a non-standard toolbar in a wxFrame)
1723 and then re-inserted into another.
1728 virtual bool Reparent(wxWindow
* newParent
);
1732 Converts from screen to client window coordinates.
1735 Stores the screen x coordinate and receives the client x coordinate.
1737 Stores the screen x coordinate and receives the client x coordinate.
1739 The screen position for the second form of the function.
1741 virtual void ScreenToClient(int* x
, int* y
) const;
1742 const virtual wxPoint
ScreenToClient(const wxPoint
& pt
) const;
1746 Scrolls the window by the given number of lines down (if @a lines is
1749 @return Returns @true if the window was scrolled, @false if it was already
1750 on top/bottom and nothing was done.
1752 @remarks This function is currently only implemented under MSW and
1753 wxTextCtrl under wxGTK (it also works for wxScrolled classes
1754 under all platforms).
1758 virtual bool ScrollLines(int lines
);
1761 Scrolls the window by the given number of pages down (if @a pages is
1764 @return Returns @true if the window was scrolled, @false if it was already
1765 on top/bottom and nothing was done.
1767 @remarks This function is currently only implemented under MSW and wxGTK.
1771 virtual bool ScrollPages(int pages
);
1774 Physically scrolls the pixels in the window and move child windows accordingly.
1777 Amount to scroll horizontally.
1779 Amount to scroll vertically.
1781 Rectangle to scroll, if it is @NULL, the whole window is
1782 scrolled (this is always the case under wxGTK which doesn't support this
1785 @remarks Note that you can often use wxScrolled instead of using this
1788 virtual void ScrollWindow(int dx
, int dy
,
1789 const wxRect
* rect
= NULL
);
1792 Sets the accelerator table for this window. See wxAcceleratorTable.
1794 virtual void SetAcceleratorTable(const wxAcceleratorTable
& accel
);
1797 Sets the accessible for this window. Any existing accessible for this window
1798 will be deleted first, if not identical to @e accessible.
1799 See also wxAccessible.
1801 void SetAccessible(wxAccessible
* accessible
);
1804 Determines whether the Layout() function will
1805 be called automatically when the window is resized. Please note that this only
1806 happens for the windows usually used to contain children, namely
1807 wxPanel and wxTopLevelWindow
1808 (and the classes deriving from them).
1809 This method is called implicitly by
1810 SetSizer() but if you use
1811 SetConstraints() you should call it
1812 manually or otherwise the window layout won't be correctly updated when its
1816 Set this to @true if you wish the Layout function to be
1817 called automatically when the window is resized.
1819 @see SetConstraints()
1821 void SetAutoLayout(bool autoLayout
);
1824 Sets the background colour of the window.
1825 Please see InheritAttributes() for
1826 explanation of the difference between this method and
1827 SetOwnBackgroundColour().
1830 The colour to be used as the background colour, pass
1831 wxNullColour to reset to the default colour.
1833 @remarks The background colour is usually painted by the default
1834 wxEraseEvent event handler function under Windows and
1835 automatically under GTK.
1837 @see GetBackgroundColour(), SetForegroundColour(),
1838 GetForegroundColour(), ClearBackground(),
1839 Refresh(), wxEraseEvent
1841 virtual bool SetBackgroundColour(const wxColour
& colour
);
1844 Sets the background style of the window. see
1845 GetBackgroundStyle() for the description
1846 of the possible style values.
1848 @see SetBackgroundColour(), GetForegroundColour(),
1851 virtual void SetBackgroundStyle(wxBackgroundStyle style
);
1854 This method is only implemented by ports which have support for
1855 native TAB traversal (such as GTK+ 2.0). It is called by wxWidgets'
1856 container control code to give the native system a hint when
1857 doing TAB traversal. A call to this does not disable or change
1858 the effect of programmatically calling
1861 @see wxFocusEvent, wxPanel::SetFocus, wxPanel::SetFocusIgnoringChildren
1863 virtual void SetCanFocus(bool canFocus
);
1866 Sets the caret() associated with the window.
1868 void SetCaret(wxCaret
* caret
) const;
1872 This sets the size of the window client area in pixels. Using this function to
1874 tends to be more device-independent than SetSize(), since the application need
1876 worry about what dimensions the border or title bar have when trying to fit the
1878 around panel items, for example.
1881 The required client area width.
1883 The required client area height.
1885 The required client size.
1887 virtual void SetClientSize(int width
, int height
);
1888 virtual void SetClientSize(const wxSize
& size
);
1892 Sets the window to have the given layout constraints. The window
1893 will then own the object, and will take care of its deletion.
1894 If an existing layout constraints object is already owned by the
1895 window, it will be deleted.
1898 The constraints to set. Pass @NULL to disassociate and delete the window's
1901 @remarks You must call SetAutoLayout() to tell a window to use
1902 the constraints automatically in OnSize; otherwise, you
1903 must override OnSize and call Layout() explicitly. When
1904 setting both a wxLayoutConstraints and a wxSizer, only
1905 the sizer will have effect.
1907 void SetConstraints(wxLayoutConstraints
* constraints
);
1910 This normally does not need to be called by user code. It is called
1911 when a window is added to a sizer, and is used so the window can
1912 remove itself from the sizer when it is destroyed.
1914 void SetContainingSizer(wxSizer
* sizer
);
1917 Sets the window's cursor. Notice that the window cursor also sets it for the
1918 children of the window implicitly.
1919 The @a cursor may be @c wxNullCursor in which case the window cursor will
1920 be reset back to default.
1923 Specifies the cursor that the window should normally display.
1925 @see ::wxSetCursor, wxCursor
1927 virtual void SetCursor(const wxCursor
& cursor
);
1930 Associates a drop target with this window.
1931 If the window already has a drop target, it is deleted.
1933 @see GetDropTarget(), @ref overview_wxdndoverview
1935 void SetDropTarget(wxDropTarget
* target
);
1938 Sets the event handler for this window.
1941 Specifies the handler to be set.
1943 @remarks An event handler is an object that is capable of processing the
1944 events sent to a window. By default, the window is its
1945 own event handler, but an application may wish to
1946 substitute another, for example to allow central
1947 implementation of event-handling for a variety of
1948 different window classes.
1950 @see GetEventHandler(), PushEventHandler(),
1951 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1953 void SetEventHandler(wxEvtHandler
* handler
);
1956 Sets the extra style bits for the window. The currently defined extra style
1959 @b wxWS_EX_VALIDATE_RECURSIVELY
1961 TransferDataTo/FromWindow()
1962 and Validate() methods will recursively descend into all children of the
1963 window if it has this style flag set.
1965 @b wxWS_EX_BLOCK_EVENTS
1967 Normally, the command
1968 events are propagated upwards to the window parent recursively until a handler
1969 for them is found. Using this style allows to prevent them from being
1970 propagated beyond this window. Notice that wxDialog has this style on by
1971 default for the reasons explained in the
1972 @ref overview_eventprocessing "event processing overview".
1974 @b wxWS_EX_TRANSIENT
1976 This can be used to prevent a
1977 window from being used as an implicit parent for the dialogs which were
1978 created without a parent. It is useful for the windows which can disappear at
1979 any moment as creating children of such windows results in fatal problems.
1981 @b wxWS_EX_CONTEXTHELP
1983 Under Windows, puts a query
1984 button on the caption. When pressed, Windows will go into a context-sensitive
1985 help mode and wxWidgets will send a wxEVT_HELP event if the user clicked on an
1987 This style cannot be used together with wxMAXIMIZE_BOX or wxMINIMIZE_BOX, so
1988 these two styles are automatically turned of if this one is used.
1990 @b wxWS_EX_PROCESS_IDLE
1992 This window should always process idle events, even
1993 if the mode set by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
1995 @b wxWS_EX_PROCESS_UI_UPDATES
1997 This window should always process UI update events,
1998 even if the mode set by wxUpdateUIEvent::SetMode is
1999 wxUPDATE_UI_PROCESS_SPECIFIED.
2001 void SetExtraStyle(long exStyle
);
2004 This sets the window to receive keyboard input.
2006 @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
2007 wxPanel::SetFocusIgnoringChildren
2009 virtual void SetFocus();
2012 This function is called by wxWidgets keyboard navigation code when the user
2013 gives the focus to this window from keyboard (e.g. using @c TAB key).
2014 By default this method simply calls SetFocus() but
2015 can be overridden to do something in addition to this in the derived classes.
2017 virtual void SetFocusFromKbd();
2020 Sets the font for this window. This function should not be called for the
2021 parent window if you don't want its font to be inherited by its children,
2022 use SetOwnFont() instead in this case and
2023 see InheritAttributes() for more
2025 Please notice that the given font is not automatically used for
2026 wxPaintDC objects associated with this window, you need to
2027 call wxDC::SetFont too. However this font is used by
2028 any standard controls for drawing their text as well as by
2032 Font to associate with this window, pass
2033 wxNullFont to reset to the default font.
2035 @return @true if the want was really changed, @false if it was already set
2036 to this font and so nothing was done.
2038 @see GetFont(), InheritAttributes()
2040 bool SetFont(const wxFont
& font
);
2043 Sets the foreground colour of the window.
2044 Please see InheritAttributes() for
2045 explanation of the difference between this method and
2046 SetOwnForegroundColour().
2049 The colour to be used as the foreground colour, pass
2050 wxNullColour to reset to the default colour.
2052 @remarks The interpretation of foreground colour is open to
2053 interpretation according to the window class; it may be
2054 the text colour or other colour, or it may not be used
2057 @see GetForegroundColour(), SetBackgroundColour(),
2058 GetBackgroundColour(), ShouldInheritColours()
2060 virtual void SetForegroundColour(const wxColour
& colour
);
2063 Sets the help text to be used as context-sensitive help for this window.
2064 Note that the text is actually stored by the current wxHelpProvider
2066 and not in the window object itself.
2068 @see GetHelpText(), wxHelpProvider::AddHelp()
2070 virtual void SetHelpText(const wxString
& helpText
);
2073 Sets the identifier of the window.
2075 @remarks Each window has an integer identifier. If the application has
2076 not provided one, an identifier will be generated.
2077 Normally, the identifier should be provided on creation
2078 and should not be modified subsequently.
2080 @see GetId(), @ref overview_windowids "Window identifiers"
2085 Sets the initial window size if none is given (i.e. at least one of the
2086 components of the size passed to ctor/Create() is wxDefaultCoord).
2088 virtual void SetInitialBestSize(const wxSize
& size
);
2091 A @e smart SetSize that will fill in default size components with the
2092 window's @e best size values.
2094 Also sets the window's minsize to the value passed in for use with sizers.
2095 This means that if a full or partial size is passed to this function then
2096 the sizers will use that size instead of the results of GetBestSize() to
2097 determine the minimum needs of the window for layout.
2099 Most controls will use this to set their initial size, and their min
2100 size to the passed in value (if any.)
2102 @see SetSize(), GetBestSize(), GetEffectiveMinSize(),
2103 @ref overview_windowsizing
2105 void SetInitialSize(const wxSize
& size
= wxDefaultSize
);
2108 Sets the window's label.
2115 virtual void SetLabel(const wxString
& label
);
2118 Sets the maximum client size of the window, to indicate to the sizer
2119 layout mechanism that this is the maximum possible size of its client area.
2123 void SetMaxClientSize(const wxSize
& size
);
2126 Sets the maximum size of the window, to indicate to the sizer layout mechanism
2127 that this is the maximum possible size.
2129 @see SetMaxClientSize()
2131 void SetMaxSize(const wxSize
& size
);
2134 Sets the minimum client size of the window, to indicate to the sizer
2135 layout mechanism that this is the minimum required size of window's client
2138 You may need to call this if you change the window size after
2139 construction and before adding to its parent sizer.
2141 Note, that just as with SetMinSize(), calling this method doesn't
2142 prevent the program from explicitly making the window smaller than the
2147 void SetMinClientSize(const wxSize
& size
);
2150 Sets the minimum size of the window, to indicate to the sizer layout
2151 mechanism that this is the minimum required size.
2153 You may need to call this if you change the window size after
2154 construction and before adding to its parent sizer.
2156 Notice that calling this method doesn't prevent the program from making
2157 the window explicitly smaller than the specified size by calling
2158 SetSize(), it just ensures that it won't become smaller than this size
2159 during the automatic layout.
2161 @see SetMinClientSize()
2163 void SetMinSize(const wxSize
& size
);
2166 Sets the window's name.
2169 A name to set for the window.
2173 virtual void SetName(const wxString
& name
);
2176 Sets the background colour of the window but prevents it from being inherited
2177 by the children of this window.
2179 @see SetBackgroundColour(), InheritAttributes()
2181 void SetOwnBackgroundColour(const wxColour
& colour
);
2184 Sets the font of the window but prevents it from being inherited by the
2185 children of this window.
2187 @see SetFont(), InheritAttributes()
2189 void SetOwnFont(const wxFont
& font
);
2192 Sets the foreground colour of the window but prevents it from being inherited
2193 by the children of this window.
2195 @see SetForegroundColour(), InheritAttributes()
2197 void SetOwnForegroundColour(const wxColour
& colour
);
2200 Obsolete - use wxDC::SetPalette instead.
2202 virtual void SetPalette(wxPalette
* palette
);
2205 Sets the position of one of the built-in scrollbars.
2208 Determines the scrollbar whose position is to be set. May be wxHORIZONTAL
2211 Position in scroll units.
2213 @true to redraw the scrollbar, @false otherwise.
2215 @remarks This function does not directly affect the contents of the
2216 window: it is up to the application to take note of
2217 scrollbar attributes and redraw contents accordingly.
2219 @see SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
2222 virtual void SetScrollPos(int orientation
, int pos
,
2223 bool refresh
= true);
2226 Sets the scrollbar properties of a built-in scrollbar.
2229 Determines the scrollbar whose page size is to be set. May be wxHORIZONTAL
2232 The position of the scrollbar in scroll units.
2234 The size of the thumb, or visible portion of the scrollbar, in scroll units.
2236 The maximum position of the scrollbar.
2238 @true to redraw the scrollbar, @false otherwise.
2240 @remarks Let's say you wish to display 50 lines of text, using the same
2241 font. The window is sized so that you can only see 16
2244 @see @ref overview_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
2246 virtual void SetScrollbar(int orientation
, int position
,
2249 bool refresh
= true);
2253 Sets the size of the window in pixels.
2256 Required x position in pixels, or wxDefaultCoord to indicate that the
2258 value should be used.
2260 Required y position in pixels, or wxDefaultCoord to indicate that the
2262 value should be used.
2264 Required width in pixels, or wxDefaultCoord to indicate that the existing
2265 value should be used.
2267 Required height position in pixels, or wxDefaultCoord to indicate that the
2269 value should be used.
2271 wxSize object for setting the size.
2273 wxRect object for setting the position and size.
2275 Indicates the interpretation of other parameters. It is a bit list of the
2277 wxSIZE_AUTO_WIDTH: a wxDefaultCoord width value is taken to indicate
2278 a wxWidgets-supplied default width.
2280 wxSIZE_AUTO_HEIGHT: a wxDefaultCoord height value is taken to indicate
2281 a wxWidgets-supplied default height.
2283 wxSIZE_AUTO: wxDefaultCoord size values are taken to indicate
2284 a wxWidgets-supplied default size.
2286 wxSIZE_USE_EXISTING: existing dimensions should be used
2287 if wxDefaultCoord values are supplied.
2289 wxSIZE_ALLOW_MINUS_ONE: allow negative dimensions (i.e. value of
2290 wxDefaultCoord) to be interpreted
2291 as real dimensions, not default values.
2292 wxSIZE_FORCE: normally, if the position and the size of the window are
2293 already the same as the parameters of this function, nothing is done. but
2295 this flag a window resize may be forced even in this case (supported in wx
2296 2.6.2 and later and only implemented for MSW and ignored elsewhere
2299 @remarks The second form is a convenience for calling the first form with
2300 default x and y parameters, and must be used with
2301 non-default width and height values.
2305 virtual void SetSize(int x
, int y
, int width
, int height
,
2306 int sizeFlags
= wxSIZE_AUTO
);
2307 virtual void SetSize(const wxRect
& rect
);
2308 virtual void SetSize(int width
, int height
);
2309 virtual void SetSize(const wxSize
& size
);
2313 Sets the window to have the given layout sizer. The window
2314 will then own the object, and will take care of its deletion.
2315 If an existing layout constraints object is already owned by the
2316 window, it will be deleted if the deleteOld parameter is @true.
2317 Note that this function will also call
2318 SetAutoLayout() implicitly with @true
2319 parameter if the @a sizer is non-@NULL and @false otherwise.
2322 The sizer to set. Pass @NULL to disassociate and conditionally delete
2323 the window's sizer. See below.
2325 If @true (the default), this will delete any pre-existing sizer.
2326 Pass @false if you wish to handle deleting the old sizer yourself.
2328 @remarks SetSizer now enables and disables Layout automatically, but
2329 prior to wxWidgets 2.3.3 the following applied:
2331 void SetSizer(wxSizer
* sizer
, bool deleteOld
= true);
2334 This method calls SetSizer() and then
2335 wxSizer::SetSizeHints which sets the initial
2336 window size to the size needed to accommodate all sizer elements and sets the
2337 size hints which, if this window is a top level one, prevent the user from
2338 resizing it to be less than this minimial size.
2340 void SetSizerAndFit(wxSizer
* sizer
, bool deleteOld
= true);
2343 This function tells a window if it should use the system's "theme" code
2344 to draw the windows' background instead if its own background drawing
2345 code. This does not always have any effect since the underlying platform
2346 obviously needs to support the notion of themes in user defined windows.
2347 One such platform is GTK+ where windows can have (very colourful) backgrounds
2348 defined by a user's selected theme.
2349 Dialogs, notebook pages and the status bar have this flag set to @true
2350 by default so that the default look and feel is simulated best.
2352 virtual void SetThemeEnabled(bool enable
);
2356 Attach a tooltip to the window.
2357 See also: GetToolTip(),
2360 void SetToolTip(const wxString
& tip
);
2361 void SetToolTip(wxToolTip
* tip
);
2365 Set the transparency of the window. If the system supports transparent windows,
2366 returns @true, otherwise returns @false and the window remains fully opaque.
2367 See also CanSetTransparent().
2368 The parameter @a alpha is in the range 0..255 where 0 corresponds to a
2369 fully transparent window and 255 to the fully opaque one. The constants
2370 @c wxIMAGE_ALPHA_TRANSPARENT and @c wxIMAGE_ALPHA_OPAQUE can be
2373 bool SetTransparent(wxByte alpha
);
2376 Deletes the current validator (if any) and sets the window validator, having
2377 called wxValidator::Clone to
2378 create a new validator of this type.
2380 virtual void SetValidator(const wxValidator
& validator
);
2384 Sets the virtual size of the window in pixels.
2386 void SetVirtualSize(int width
, int height
);
2387 void SetVirtualSize(const wxSize
& size
);
2391 Identical to SetWindowStyleFlag().
2393 void SetWindowStyle(long style
);
2396 Sets the style of the window. Please note that some styles cannot be changed
2397 after the window creation and that Refresh() might
2398 need to be be called after changing the others for the change to take place
2400 See @ref overview_windowstyles "Window styles" for more information about flags.
2402 @see GetWindowStyleFlag()
2404 virtual void SetWindowStyleFlag(long style
);
2407 This function can be called under all platforms but only does anything under
2408 Mac OS X 10.3+ currently. Under this system, each of the standard control can
2409 exist in several sizes which correspond to the elements of wxWindowVariant
2412 By default the controls use the normal size, of course, but this function can
2413 be used to change this.
2415 void SetWindowVariant(wxWindowVariant variant
);
2418 Return @true from here to allow the colours of this window to be changed by
2419 InheritAttributes(), returning @false
2420 forbids inheriting them from the parent window.
2421 The base class version returns @false, but this method is overridden in
2422 wxControl where it returns @true.
2424 virtual bool ShouldInheritColours();
2427 Shows or hides the window. You may need to call Raise()
2428 for a top level window if you want to bring it to top, although this is not
2429 needed if Show() is called immediately after the frame creation.
2432 If @true displays the window. Otherwise, hides it.
2434 @return @true if the window has been shown or hidden or @false if nothing
2435 was done because it already was in the requested state.
2437 @see IsShown(), Hide(), wxRadioBox::Show
2439 virtual bool Show(bool show
= true);
2442 This function shows a window, like Show(), but using a special visual
2449 The @a timeout parameter specifies the time of the animation, in
2450 milliseconds. If the default value of 0 is used, the default
2451 animation time for the current platform is used.
2453 @note Currently this function is only implemented in wxMSW and does the
2454 same thing as Show() in the other ports.
2458 @see HideWithEffect()
2460 virtual bool ShowWithEffect(wxShowEffect effect
,
2461 unsigned timeout
= 0);
2464 Reenables window updating after a previous call to Freeze().
2466 To really thaw the control, it must be called exactly the same number
2467 of times as Freeze().
2469 If the window has any children, they are recursively thawn too.
2471 @see wxWindowUpdateLocker, Freeze(), IsFrozen()
2473 virtual void Thaw();
2476 Turns the given @a flag on if it's currently turned off and vice versa.
2477 This function cannot be used if the value of the flag is 0 (which is often
2478 the case for default flags).
2479 Also, please notice that not all styles can be changed after the control
2482 @return Returns @true if the style was turned on by this function, @false
2483 if it was switched off.
2485 @see SetWindowStyleFlag(), HasFlag()
2487 bool ToggleWindowStyle(int flag
);
2490 Transfers values from child controls to data areas specified by their
2492 @false if a transfer failed.
2493 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2494 the method will also call TransferDataFromWindow() of all child windows.
2496 @see TransferDataToWindow(), wxValidator, Validate()
2498 virtual bool TransferDataFromWindow();
2501 Transfers values to child controls from data areas specified by their
2503 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2504 the method will also call TransferDataToWindow() of all child windows.
2506 @return Returns @false if a transfer failed.
2508 @see TransferDataFromWindow(), wxValidator, Validate()
2510 virtual bool TransferDataToWindow();
2513 Unregisters a system wide hotkey.
2516 Numeric identifier of the hotkey. Must be the same id that was passed to
2519 @return @true if the hotkey was unregistered successfully, @false if the
2522 @remarks This function is currently only implemented under MSW.
2524 @see RegisterHotKey()
2526 bool UnregisterHotKey(int hotkeyId
);
2529 Unreserve an ID or range of IDs that was reserved by NewControlId().
2530 See @ref overview_windowidsoverview "Window IDs overview" for more information.
2533 The starting ID of the range of IDs to unreserve.
2535 The number of sequential IDs to unreserve.
2537 @see NewControlId(), wxIdManager, @ref overview_windowidsoverview
2538 "Window IDs overview"
2540 static void UnreserveControlId(wxWindowID id
, int count
= 1);
2543 Calling this method immediately repaints the invalidated area of the window and
2544 all of its children recursively while this would usually only happen when the
2545 flow of control returns to the event loop.
2546 Notice that this function doesn't invalidate any area of the window so
2547 nothing happens if nothing has been invalidated (i.e. marked as requiring
2548 a redraw). Use Refresh() first if you want to
2549 immediately redraw the window unconditionally.
2551 virtual void Update();
2554 This function sends wxUpdateUIEvents() to
2555 the window. The particular implementation depends on the window; for
2556 example a wxToolBar will send an update UI event for each toolbar button,
2557 and a wxFrame will send an update UI event for each menubar menu item.
2558 You can call this function from your application to ensure that your
2559 UI is up-to-date at this point (as far as your wxUpdateUIEvent handlers
2560 are concerned). This may be necessary if you have called
2561 wxUpdateUIEvent::SetMode or
2562 wxUpdateUIEvent::SetUpdateInterval to
2563 limit the overhead that wxWidgets incurs by sending update UI events in idle
2565 @a flags should be a bitlist of one or more of the following values.
2567 If you are calling this function from an OnInternalIdle or OnIdle
2568 function, make sure you pass the wxUPDATE_UI_FROMIDLE flag, since
2569 this tells the window to only update the UI elements that need
2570 to be updated in idle time. Some windows update their elements
2571 only when necessary, for example when a menu is about to be shown.
2572 The following is an example of how to call UpdateWindowUI from
2575 @see wxUpdateUIEvent, DoUpdateWindowUI(), OnInternalIdle()
2577 virtual void UpdateWindowUI(long flags
= wxUPDATE_UI_NONE
);
2580 Validates the current values of the child controls using their validators.
2581 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2582 the method will also call Validate() of all child windows.
2584 @return Returns @false if any of the validations failed.
2586 @see TransferDataFromWindow(), TransferDataToWindow(),
2589 virtual bool Validate();
2592 Moves the pointer to the given position on the window.
2593 @note This function is not supported under Mac because Apple Human
2594 Interface Guidelines forbid moving the mouse cursor programmatically.
2597 The new x position for the cursor.
2599 The new y position for the cursor.
2601 void WarpPointer(int x
, int y
);
2605 /// Valid values for wxWindow::ShowWithEffect() and wxWindow::HideWithEffect().
2608 /// Roll window to the left
2609 wxSHOW_EFFECT_ROLL_TO_LEFT
,
2610 /// Roll window to the right
2611 wxSHOW_EFFECT_ROLL_TO_RIGHT
,
2612 /// Roll window to the top
2613 wxSHOW_EFFECT_ROLL_TO_TOP
,
2614 /// Roll window to the bottom
2615 wxSHOW_EFFECT_ROLL_TO_BOTTOM
,
2616 /// Slide window to the left
2617 wxSHOW_EFFECT_SLIDE_TO_LEFT
,
2618 /// Slide window to the right
2619 wxSHOW_EFFECT_SLIDE_TO_RIGHT
,
2620 /// Slide window to the top
2621 wxSHOW_EFFECT_SLIDE_TO_TOP
,
2622 /// Slide window to the bottom
2623 wxSHOW_EFFECT_SLIDE_TO_BOTTOM
,
2624 /// Fade in or out effect
2625 wxSHOW_EFFECT_BLEND
,
2626 /// Expanding or collapsing effect
2627 wxSHOW_EFFECT_EXPAND
2632 // ============================================================================
2633 // Global functions/macros
2634 // ============================================================================
2636 /** @ingroup group_funcmacro_misc */
2640 Find the deepest window at the mouse pointer position, returning the window
2641 and current pointer position in screen coordinates.
2643 @header{wx/window.h}
2645 wxWindow
* wxFindWindowAtPointer(wxPoint
& pt
);
2648 Gets the currently active window (implemented for MSW and GTK only
2649 currently, always returns @NULL in the other ports).
2651 @header{wx/window.h}
2653 wxWindow
* wxGetActiveWindow();
2656 Returns the first top level parent of the given window, or in other words,
2657 the frame or dialog containing it, or @NULL.
2659 @header{wx/window.h}
2661 wxWindow
* wxGetTopLevelParent(wxWindow
* window
);