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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: window.h
3 // Purpose: interface of wxWindow
4 // Author: wxWidgets team
5 // RCS-ID: $Id$
6 // Licence: wxWindows license
7 /////////////////////////////////////////////////////////////////////////////
8
9 /**
10 @class wxWindow
11
12 wxWindow is the base class for all windows and represents any visible object on
13 screen. All controls, top level windows and so on are windows. Sizers and
14 device contexts are not, however, as they don't appear on screen themselves.
15
16 Please note that all children of the window will be deleted automatically by
17 the destructor before the window itself is deleted which means that you don't
18 have to worry about deleting them manually. Please see the @ref
19 overview_windowdeletion "window deletion overview" for more information.
20
21 Also note that in this, and many others, wxWidgets classes some
22 @c GetXXX() methods may be overloaded (as, for example,
23 wxWindow::GetSize or wxWindow::GetClientSize). In this case, the overloads
24 are non-virtual because having multiple virtual functions with the same name
25 results in a virtual function name hiding at the derived class level (in
26 English, this means that the derived class has to override all overloaded
27 variants if it overrides any of them). To allow overriding them in the derived
28 class, wxWidgets uses a unique protected virtual @c DoGetXXX() method
29 and all @c GetXXX() ones are forwarded to it, so overriding the former
30 changes the behaviour of the latter.
31
32 @beginStyleTable
33 @style{wxBORDER_DEFAULT}
34 The window class will decide the kind of border to show, if any.
35 @style{wxBORDER_SIMPLE}
36 Displays a thin border around the window. wxSIMPLE_BORDER is the
37 old name for this style.
38 @style{wxBORDER_SUNKEN}
39 Displays a sunken border. wxSUNKEN_BORDER is the old name for this
40 style.
41 @style{wxBORDER_RAISED}
42 Displays a raised border. wxRAISED_BORDER is the old name for this
43 style.
44 @style{wxBORDER_STATIC}
45 Displays a border suitable for a static control. wxSTATIC_BORDER
46 is the old name for this style. Windows only.
47 @style{wxBORDER_THEME}
48 Displays a native border suitable for a control, on the current
49 platform. On Windows XP or Vista, this will be a themed border; on
50 most other platforms a sunken border will be used. For more
51 information for themed borders on Windows, please see Themed
52 borders on Windows.
53 @style{wxBORDER_NONE}
54 Displays no border, overriding the default border style for the
55 window. wxNO_BORDER is the old name for this style.
56 @style{wxBORDER_DOUBLE}
57 This style is obsolete and should not be used.
58 @style{wxTRANSPARENT_WINDOW}
59 The window is transparent, that is, it will not receive paint
60 events. Windows only.
61 @style{wxTAB_TRAVERSAL}
62 Use this to enable tab traversal for non-dialog windows.
63 @style{wxWANTS_CHARS}
64 Use this to indicate that the window wants to get all char/key
65 events for all keys - even for keys like TAB or ENTER which are
66 usually used for dialog navigation and which wouldn't be generated
67 without this style. If you need to use this style in order to get
68 the arrows or etc., but would still like to have normal keyboard
69 navigation take place, you should call Navigate in response to the
70 key events for Tab and Shift-Tab.
71 @style{wxNO_FULL_REPAINT_ON_RESIZE}
72 On Windows, this style used to disable repainting the window
73 completely when its size is changed. Since this behaviour is now
74 the default, the style is now obsolete and no longer has an effect.
75 @style{wxVSCROLL}
76 Use this style to enable a vertical scrollbar. Notice that this
77 style cannot be used with native controls which don't support
78 scrollbars nor with top-level windows in most ports.
79 @style{wxHSCROLL}
80 Use this style to enable a horizontal scrollbar. The same
81 limitations as for wxVSCROLL apply to this style.
82 @style{wxALWAYS_SHOW_SB}
83 If a window has scrollbars, disable them instead of hiding them
84 when they are not needed (i.e. when the size of the window is big
85 enough to not require the scrollbars to navigate it). This style is
86 currently implemented for wxMSW, wxGTK and wxUniversal and does
87 nothing on the other platforms.
88 @style{wxCLIP_CHILDREN}
89 Use this style to eliminate flicker caused by the background being
90 repainted, then children being painted over them. Windows only.
91 @style{wxFULL_REPAINT_ON_RESIZE}
92 Use this style to force a complete redraw of the window whenever it
93 is resized instead of redrawing just the part of the window
94 affected by resizing. Note that this was the behaviour by default
95 before 2.5.1 release and that if you experience redraw problems
96 with code which previously used to work you may want to try this.
97 Currently this style applies on GTK+ 2 and Windows only, and full
98 repainting is always done on other platforms.
99 @endStyleTable
100
101 @beginExtraStyleTable
102 @style{wxWS_EX_VALIDATE_RECURSIVELY}
103 By default, Validate/TransferDataTo/FromWindow() only work on
104 direct children of the window (compatible behaviour). Set this flag
105 to make them recursively descend into all subwindows.
106 @style{wxWS_EX_BLOCK_EVENTS}
107 wxCommandEvents and the objects of the derived classes are
108 forwarded to the parent window and so on recursively by default.
109 Using this flag for the given window allows to block this
110 propagation at this window, i.e. prevent the events from being
111 propagated further upwards. Dialogs have this flag on by default.
112 @style{wxWS_EX_TRANSIENT}
113 Don't use this window as an implicit parent for the other windows:
114 this must be used with transient windows as otherwise there is the
115 risk of creating a dialog/frame with this window as a parent which
116 would lead to a crash if the parent is destroyed before the child.
117 @style{wxWS_EX_PROCESS_IDLE}
118 This window should always process idle events, even if the mode set
119 by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
120 @style{wxWS_EX_PROCESS_UI_UPDATES}
121 This window should always process UI update events, even if the
122 mode set by wxUpdateUIEvent::SetMode is
123 wxUPDATE_UI_PROCESS_SPECIFIED.
124 @endExtraStyleTable
125
126 @library{wxcore}
127 @category{FIXME}
128
129 @see @ref overview_eventhandling "Event handling overview",
130 @ref overview_windowsizing "Window sizing overview"
131 */
132 class wxWindow : public wxEvtHandler
133 {
134 public:
135 /**
136 Default constructor
137 */
138 wxWindow();
139
140 /**
141 Constructs a window, which can be a child of a frame, dialog or any other
142 non-control window.
143
144 @param parent
145 Pointer to a parent window.
146 @param id
147 Window identifier. If wxID_ANY, will automatically create an identifier.
148 @param pos
149 Window position. wxDefaultPosition indicates that wxWidgets
150 should generate a default position for the window. If using the wxWindow
151 class directly, supply
152 an actual position.
153 @param size
154 Window size. wxDefaultSize indicates that wxWidgets
155 should generate a default size for the window. If no suitable size can be
156 found, the
157 window will be sized to 20x20 pixels so that the window is visible but
158 obviously not
159 correctly sized.
160 @param style
161 Window style. For generic window styles, please see wxWindow.
162 @param name
163 Window name.
164 */
165 wxWindow(wxWindow* parent, wxWindowID id,
166 const wxPoint& pos = wxDefaultPosition,
167 const wxSize& size = wxDefaultSize,
168 long style = 0,
169 const wxString& name = wxPanelNameStr);
170
171 /**
172 Destructor. Deletes all sub-windows, then deletes itself. Instead of using
173 the @b delete operator explicitly, you should normally
174 use Destroy() so that wxWidgets
175 can delete a window only when it is safe to do so, in idle time.
176
177 @see @ref overview_windowdeletion "Window Deletion Overview",
178 Destroy(), wxCloseEvent
179 */
180 ~wxWindow();
181
182 /**
183 This method may be overridden in the derived classes to return @false to
184 indicate that this control doesn't accept input at all (i.e. behaves like e.g.
185 wxStaticText) and so doesn't need focus.
186
187 @see AcceptsFocusFromKeyboard()
188 */
189 virtual bool AcceptsFocus() const;
190
191 /**
192 This method may be overridden in the derived classes to return @false to
193 indicate that while this control can, in principle, have focus if the user
194 clicks it with the mouse, it shouldn't be included in the TAB traversal chain
195 when using the keyboard.
196 */
197 virtual bool AcceptsFocusFromKeyboard() const;
198
199 /**
200 Overridden to indicate wehter this window or one of its children accepts
201 focus. Usually it's the same as AcceptsFocus() but is overridden for
202 container windows
203 */
204 virtual bool AcceptsFocusRecursively() const;
205
206 /**
207 Adds a child window. This is called automatically by window creation
208 functions so should not be required by the application programmer.
209 Notice that this function is mostly internal to wxWidgets and shouldn't be
210 called by the user code.
211
212 @param child
213 Child window to add.
214 */
215 virtual void AddChild(wxWindow* child);
216
217 /**
218 Call this function to force one or both scrollbars to be always shown, even if
219 the window is big enough to show its entire contents without scrolling.
220
221 @since 2.9.0
222
223 @param hflag
224 Whether the horizontal scroll bar should always be visible.
225 @param vflag
226 Whether the vertical scroll bar should always be visible.
227
228 @remarks This function is currently only implemented under Mac/Carbon.
229 */
230 void AlwaysShowScrollbars(bool hflag, bool vflag);
231
232 /**
233 Sets the cached best size value.
234 */
235 void CacheBestSize(const wxSize& size) const;
236
237 /**
238 Returns @true if the system supports transparent windows and calling
239 SetTransparent() may succeed. If this function
240 returns @false, transparent windows are definitely not supported by the
241 current
242 system.
243 */
244 bool CanSetTransparent();
245
246 /**
247 Directs all mouse input to this window. Call ReleaseMouse() to
248 release the capture.
249 Note that wxWidgets maintains the stack of windows having captured the mouse
250 and when the mouse is released the capture returns to the window which had had
251 captured it previously and it is only really released if there were no previous
252 window. In particular, this means that you must release the mouse as many times
253 as you capture it, unless the window receives
254 the wxMouseCaptureLostEvent event.
255 Any application which captures the mouse in the beginning of some operation
256 must handle wxMouseCaptureLostEvent
257 and cancel this operation when it receives the event. The event handler must
258 not recapture mouse.
259
260 @see ReleaseMouse(), wxMouseCaptureLostEvent
261 */
262 virtual void CaptureMouse();
263
264 /**
265 A synonym for Centre().
266 */
267 void Center(int direction);
268
269 /**
270 A synonym for CentreOnParent().
271 */
272 void CenterOnParent(int direction);
273
274 /**
275 Centres the window.
276
277 @param direction
278 Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
279 or wxBOTH. It may also include wxCENTRE_ON_SCREEN flag
280 if you want to center the window on the entire screen and not on its
281 parent window.
282
283 @remarks If the window is a top level one (i.e. doesn't have a parent),
284 it will be centered relative to the screen anyhow.
285
286 @see Center()
287 */
288 void Centre(int direction = wxBOTH);
289
290 /**
291 Centres the window on its parent. This is a more readable synonym for
292 Centre().
293
294 @param direction
295 Specifies the direction for the centering. May be wxHORIZONTAL, wxVERTICAL
296 or wxBOTH.
297
298 @remarks This methods provides for a way to center top level windows over
299 their parents instead of the entire screen. If there
300 is no parent or if the window is not a top level
301 window, then behaviour is the same as Centre().
302
303 @see wxTopLevelWindow::CentreOnScreen
304 */
305 void CentreOnParent(int direction = wxBOTH);
306
307 /**
308 Clears the window by filling it with the current background colour. Does not
309 cause an erase background event to be generated.
310 */
311 void ClearBackground();
312
313 //@{
314 /**
315 Converts to screen coordinates from coordinates relative to this window.
316
317 @param x
318 A pointer to a integer value for the x coordinate. Pass the client
319 coordinate in, and
320 a screen coordinate will be passed out.
321 @param y
322 A pointer to a integer value for the y coordinate. Pass the client
323 coordinate in, and
324 a screen coordinate will be passed out.
325 @param pt
326 The client position for the second form of the function.
327 */
328 void ClientToScreen(int* x, int* y) const;
329 wxPoint ClientToScreen(const wxPoint& pt) const;
330 //@}
331
332 /**
333 Converts client area size @a size to corresponding window size. In
334 other words, the returned value is what would GetSize() return if this
335 window had client area of given size. Components with wxDefaultCoord
336 value are left unchanged. Note that the conversion is not always
337 exact, it assumes that non-client area doesn't change and so doesn't
338 take into account things like menu bar (un)wrapping or (dis)appearance
339 of the scrollbars.
340
341 @since 2.8.8
342
343 @see WindowToClientSize()
344 */
345 virtual wxSize ClientToWindowSize(const wxSize& size);
346
347 /**
348 Converts window size @a size to corresponding client area size. In
349 other words, the returned value is what would GetClientSize() return if
350 this window had given window size. Components with wxDefaultCoord value
351 are left unchanged.
352
353 Note that the conversion is not always exact, it assumes that
354 non-client area doesn't change and so doesn't take into account things
355 like menu bar (un)wrapping or (dis)appearance of the scrollbars.
356
357 @since 2.8.8
358
359 @see ClientToWindowSize()
360 */
361 virtual wxSize WindowToClientSize(const wxSize& size);
362
363 /**
364 This function simply generates a wxCloseEvent whose
365 handler usually tries to close the window. It doesn't close the window
366 itself, however.
367
368 @param force
369 @false if the window's close handler should be able to veto the destruction
370 of this window, @true if it cannot.
371
372 @remarks Close calls the close handler for the window, providing an
373 opportunity for the window to choose whether to destroy
374 the window. Usually it is only used with the top level
375 windows (wxFrame and wxDialog classes) as the others
376 are not supposed to have any special OnClose() logic.
377
378 @see @ref overview_windowdeletion "Window Deletion Overview",
379 Destroy(), wxCloseEvent
380 */
381 bool Close(bool force = false);
382
383 //@{
384 /**
385 Converts a point or size from dialog units to pixels.
386 For the x dimension, the dialog units are multiplied by the average character
387 width
388 and then divided by 4.
389 For the y dimension, the dialog units are multiplied by the average character
390 height
391 and then divided by 8.
392
393 @remarks Dialog units are used for maintaining a dialog's proportions
394 even if the font changes.
395
396 @see ConvertPixelsToDialog()
397 */
398 wxPoint ConvertDialogToPixels(const wxPoint& pt);
399 wxSize ConvertDialogToPixels(const wxSize& sz);
400 //@}
401
402 //@{
403 /**
404 Converts a point or size from pixels to dialog units.
405 For the x dimension, the pixels are multiplied by 4 and then divided by the
406 average
407 character width.
408 For the y dimension, the pixels are multiplied by 8 and then divided by the
409 average
410 character height.
411
412 @remarks Dialog units are used for maintaining a dialog's proportions
413 even if the font changes.
414
415 @see ConvertDialogToPixels()
416 */
417 wxPoint ConvertPixelsToDialog(const wxPoint& pt);
418 wxSize ConvertPixelsToDialog(const wxSize& sz);
419 //@}
420
421 /**
422 Destroys the window safely. Use this function instead of the delete operator,
423 since
424 different window classes can be destroyed differently. Frames and dialogs
425 are not destroyed immediately when this function is called -- they are added
426 to a list of windows to be deleted on idle time, when all the window's events
427 have been processed. This prevents problems with events being sent to
428 non-existent
429 windows.
430
431 @return @true if the window has either been successfully deleted, or it
432 has been added to the list of windows pending real
433 deletion.
434 */
435 virtual bool Destroy();
436
437 /**
438 Destroys all children of a window. Called automatically by the destructor.
439 */
440 virtual void DestroyChildren();
441
442 /**
443 Disables the window. Same as @ref Enable() Enable(@false).
444
445 @return Returns @true if the window has been disabled, @false if it had
446 been already disabled before the call to this function.
447 */
448 bool Disable();
449
450 /**
451 Gets the size which best suits the window: for a control, it would be
452 the minimal size which doesn't truncate the control, for a panel - the
453 same size as it would have after a call to Fit().
454
455 The default implementation of this function is designed for use in container
456 windows, such as wxPanel, and works something like this:
457 -# If the window has a sizer then it is used to calculate the best size.
458 -# Otherwise if the window has layout constraints then those are used to
459 calculate the best size.
460 -# Otherwise if the window has children then the best size is set to be large
461 enough to show all the children.
462 -# Otherwise if there are no children then the window's minimal size will be
463 used as its best size.
464 -# Otherwise if there is no minimal size set, then the current size is used
465 for the best size.
466
467 @see @ref overview_windowsizing
468 */
469 virtual wxSize DoGetBestSize() const;
470
471 /**
472 Does the window-specific updating after processing the update event.
473 This function is called by UpdateWindowUI() in order to check return
474 values in the wxUpdateUIEvent and act appropriately.
475 */
476 virtual void DoUpdateWindowUI(wxUpdateUIEvent& event);
477
478 /**
479 Enables or disables eligibility for drop file events (OnDropFiles).
480
481 @param accept
482 If @true, the window is eligible for drop file events. If @false, the window
483 will not accept drop file events.
484
485 @remarks Windows only.
486 */
487 virtual void DragAcceptFiles(bool accept);
488
489 /**
490 Enable or disable the window for user input. Note that when a parent window is
491 disabled, all of its children are disabled as well and they are reenabled again
492 when the parent is.
493
494 @param enable
495 If @true, enables the window for input. If @false, disables the window.
496
497 @return Returns @true if the window has been enabled or disabled, @false
498 if nothing was done, i.e. if the window had already
499 been in the specified state.
500
501 @see IsEnabled(), Disable(), wxRadioBox::Enable
502 */
503 virtual bool Enable(bool enable = true);
504
505 /**
506 Finds the window or control which currently has the keyboard focus.
507
508 @remarks Note that this is a static function, so it can be called without
509 needing a wxWindow pointer.
510
511 @see SetFocus(), HasFocus()
512 */
513 static wxWindow* FindFocus();
514
515 /**
516 Find a child of this window, by @a id. May return @a this if
517 it matches itself.
518 */
519 wxWindow* FindWindow(long id) const;
520
521
522 /**
523 Find a child of this window, by name. May return @a this if
524 it matches itself.
525 */
526 wxWindow* FindWindow(const wxString& name) const;
527
528 /**
529 Find the first window with the given @e id.
530 If @a parent is @NULL, the search will start from all top-level
531 frames and dialog boxes; if non-@NULL, the search will be limited to the given
532 window hierarchy.
533 The search is recursive in both cases.
534
535 @see FindWindow()
536 */
537 static wxWindow* FindWindowById(long id, wxWindow* parent = NULL);
538
539 /**
540 Find a window by its label. Depending on the type of window, the label may be a
541 window title
542 or panel item label. If @a parent is @NULL, the search will start from all
543 top-level
544 frames and dialog boxes; if non-@NULL, the search will be limited to the given
545 window hierarchy.
546 The search is recursive in both cases.
547
548 @see FindWindow()
549 */
550 static wxWindow* FindWindowByLabel(const wxString& label,
551 wxWindow* parent = NULL);
552
553 /**
554 Find a window by its name (as given in a window constructor or @b Create
555 function call).
556 If @a parent is @NULL, the search will start from all top-level
557 frames and dialog boxes; if non-@NULL, the search will be limited to the given
558 window hierarchy.
559 The search is recursive in both cases.
560 If no window with such name is found,
561 FindWindowByLabel() is called.
562
563 @see FindWindow()
564 */
565 static wxWindow* FindWindowByName(const wxString& name,
566 wxWindow* parent = NULL);
567
568 /**
569 Sizes the window so that it fits around its subwindows.
570
571 This function won't do anything if there are no subwindows and will only really
572 work correctly if sizers are used for the subwindows layout.
573
574 Also, if the window has exactly one subwindow it is better (faster and the result
575 is more precise as Fit() adds some margin to account for fuzziness of its calculations)
576 to call:
577
578 @code
579 window->SetClientSize(child->GetSize());
580 @endcode
581
582 instead of calling Fit().
583
584 @see @ref overview_windowsizing
585 */
586 virtual void Fit();
587
588 /**
589 Similar to Fit(), but sizes the interior (virtual) size
590 of a window. Mainly useful with scrolled windows to reset scrollbars after
591 sizing changes that do not trigger a size event, and/or scrolled windows without
592 an interior sizer. This function similarly won't do anything if there are no
593 subwindows.
594 */
595 virtual void FitInside();
596
597 /**
598 Freezes the window or, in other words, prevents any updates from taking
599 place on screen, the window is not redrawn at all.
600
601 Thaw() must be called to reenable window redrawing. Calls to these two
602 functions may be nested but to ensure that the window is properly
603 repainted again, you must thaw it exactly as many times as you froze
604 it.
605
606 If the window has any children, they are recursively frozen too.
607
608 This method is useful for visual appearance optimization (for example,
609 it is a good idea to use it before doing many large text insertions in
610 a row into a wxTextCtrl under wxGTK) but is not implemented on all
611 platforms nor for all controls so it is mostly just a hint to wxWidgets
612 and not a mandatory directive.
613
614 @see wxWindowUpdateLocker, Thaw(), IsFrozen()
615 */
616 virtual void Freeze();
617
618 /**
619 Gets the accelerator table for this window. See wxAcceleratorTable.
620 */
621 wxAcceleratorTable* GetAcceleratorTable() const;
622
623 /**
624 Returns the accessible object for this window, if any.
625 See also wxAccessible.
626 */
627 wxAccessible* GetAccessible();
628
629 /**
630 This method is deprecated, use GetEffectiveMinSize() instead.
631 */
632 wxSize GetAdjustedBestSize() const;
633
634 /**
635 Returns the background colour of the window.
636
637 @see SetBackgroundColour(), SetForegroundColour(),
638 GetForegroundColour()
639 */
640 wxColour GetBackgroundColour() const;
641
642 /**
643 Returns the background style of the window. The background style can be one of:
644
645 wxBG_STYLE_SYSTEM
646
647 Use the default background, as determined by
648 the system or the current theme.
649
650 wxBG_STYLE_COLOUR
651
652 Use a solid colour for the background, this
653 style is set automatically if you call
654 SetBackgroundColour() so you only need to
655 set it explicitly if you had changed the background style to something else
656 before.
657
658 wxBG_STYLE_CUSTOM
659
660 Don't draw the background at all, it's
661 supposed that it is drawn by the user-defined erase background event handler.
662 This style should be used to avoid flicker when the background is entirely
663 custom-drawn.
664
665 wxBG_STYLE_TRANSPARET
666
667 The background is (partially) transparent,
668 this style is automatically set if you call
669 SetTransparent() which is used to set the
670 transparency level.
671
672 @see SetBackgroundColour(), GetForegroundColour(),
673 SetBackgroundStyle(), SetTransparent()
674 */
675 virtual wxBackgroundStyle GetBackgroundStyle() const;
676
677 /**
678 This functions returns the best acceptable minimal size for the window. For
679 example, for a static control, it will be the minimal size such that the
680 control label is not truncated. For windows containing subwindows (typically
681 wxPanel), the size returned by this function will be the
682 same as the size the window would have had after calling
683 Fit().
684 */
685 wxSize GetBestSize() const;
686
687 /**
688 Returns the currently captured window.
689
690 @see HasCapture(), CaptureMouse(), ReleaseMouse(),
691 wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
692 */
693 static wxWindow* GetCapture();
694
695 /**
696 Returns the caret() associated with the window.
697 */
698 wxCaret* GetCaret() const;
699
700 /**
701 Returns the character height for this window.
702 */
703 virtual int GetCharHeight() const;
704
705 /**
706 Returns the average character width for this window.
707 */
708 virtual int GetCharWidth() const;
709
710 //@{
711 /**
712 Returns a reference to the list of the window's children. @c wxWindowList
713 is a type-safe wxList-like class whose elements are of type @c wxWindow*.
714 */
715 wxWindowList& GetChildren();
716 const wxWindowList& GetChildren() const;
717 //@}
718
719 /**
720 Returns the default font and colours which are used by the control. This is
721 useful if you want to use the same font or colour in your own control as in a
722 standard control -- which is a much better idea than hard coding specific
723 colours or fonts which might look completely out of place on the users
724 system, especially if it uses themes.
725 The @a variant parameter is only relevant under Mac currently and is
726 ignore under other platforms. Under Mac, it will change the size of the
727 returned font. See SetWindowVariant()
728 for more about this.
729 This static method is "overridden" in many derived classes and so calling,
730 for example, wxButton::GetClassDefaultAttributes() will typically
731 return the values appropriate for a button which will be normally different
732 from those returned by, say, wxListCtrl::GetClassDefaultAttributes().
733 The @c wxVisualAttributes structure has at least the fields
734 @c font, @c colFg and @c colBg. All of them may be invalid
735 if it was not possible to determine the default control appearance or,
736 especially for the background colour, if the field doesn't make sense as is
737 the case for @c colBg for the controls with themed background.
738
739 @see InheritAttributes()
740 */
741 static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
742
743 //@{
744 /**
745 Returns the size of the window 'client area' in pixels. The client area is the
746 area which may be drawn on by the programmer, excluding title bar, border,
747 scrollbars, etc.
748 Note that if this window is a top-level one and it is currently minimized, the
749 return size is empty (both width and height are 0).
750
751 @param width
752 Receives the client width in pixels.
753 @param height
754 Receives the client height in pixels.
755
756 @see GetSize(), GetVirtualSize()
757 */
758 void GetClientSize(int* width, int* height) const;
759 wxSize GetClientSize() const;
760 //@}
761
762 /**
763 Returns a pointer to the window's layout constraints, or @NULL if there are none.
764 */
765 wxLayoutConstraints* GetConstraints() const;
766
767 /**
768 Return the sizer that this window is a member of, if any, otherwise
769 @NULL.
770 */
771 wxSizer* GetContainingSizer() const;
772
773 /**
774 Return the cursor associated with this window.
775
776 @see SetCursor()
777 */
778 const wxCursor& GetCursor() const;
779
780 /**
781 Currently this is the same as calling
782 wxWindow::GetClassDefaultAttributes(wxWindow::GetWindowVariant()).
783 One advantage of using this function compared to the static version is that
784 the call is automatically dispatched to the correct class (as usual with
785 virtual functions) and you don't have to specify the class name explicitly.
786 The other one is that in the future this function could return different
787 results, for example it might return a different font for an "Ok" button
788 than for a generic button if the users GUI is configured to show such buttons
789 in bold font. Of course, the down side is that it is impossible to call this
790 function without actually having an object to apply it to whereas the static
791 version can be used without having to create an object first.
792 */
793 virtual wxVisualAttributes GetDefaultAttributes() const;
794
795 /**
796 Returns the associated drop target, which may be @NULL.
797
798 @see SetDropTarget(), @ref overview_dnd
799 */
800 wxDropTarget* GetDropTarget() const;
801
802 /**
803 Merges the window's best size into the min size and returns the result.
804 This is the value used by sizers to determine the appropriate
805 ammount of space to allocate for the widget.
806
807 @see GetBestSize(), SetInitialSize(), @ref overview_windowsizing
808 */
809 wxSize GetEffectiveMinSize() const;
810
811 /**
812 Returns the event handler for this window. By default, the window is its
813 own event handler.
814
815 @see SetEventHandler(), PushEventHandler(),
816 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
817 */
818 wxEvtHandler* GetEventHandler() const;
819
820 /**
821 Returns the extra style bits for the window.
822 */
823 long GetExtraStyle() const;
824
825 /**
826 Returns the font for this window.
827
828 @see SetFont()
829 */
830 wxFont GetFont() const;
831
832 /**
833 Returns the foreground colour of the window.
834
835 @remarks The interpretation of foreground colour is open to
836 interpretation according to the window class; it may be
837 the text colour or other colour, or it may not be used
838 at all.
839
840 @see SetForegroundColour(), SetBackgroundColour(),
841 GetBackgroundColour()
842 */
843 wxColour GetForegroundColour();
844
845 /**
846 Returns the grandparent of a window, or @NULL if there isn't one.
847 */
848 wxWindow* GetGrandParent() const;
849
850 /**
851 Returns the platform-specific handle of the physical window. Cast it to an
852 appropriate
853 handle, such as @b HWND for Windows, @b Widget for Motif, @b GtkWidget for GTK
854 or @b WinHandle for PalmOS.
855 */
856 void* GetHandle() const;
857
858 /**
859 Gets the help text to be used as context-sensitive help for this window.
860 Note that the text is actually stored by the current wxHelpProvider
861 implementation,
862 and not in the window object itself.
863
864 @see SetHelpText(), GetHelpTextAtPoint(), wxHelpProvider
865 */
866 virtual wxString GetHelpText() const;
867
868 /**
869 Gets the help text to be used as context-sensitive help for this window. This
870 method should be overridden if the help message depends on the position inside
871 the window, otherwise GetHelpText() can be used.
872
873 @param point
874 Coordinates of the mouse at the moment of help event emission.
875 @param origin
876 Help event origin, see also wxHelpEvent::GetOrigin.
877 */
878 virtual wxString GetHelpTextAtPoint(const wxPoint point,
879 wxHelpEvent::Origin origin) const;
880
881 /**
882 Returns the identifier of the window.
883
884 @remarks Each window has an integer identifier. If the application has
885 not provided one (or the default wxID_ANY) an unique
886 identifier with a negative value will be generated.
887
888 @see SetId(), @ref overview_windowids "Window identifiers"
889 */
890 int GetId() const;
891
892 /**
893 Generic way of getting a label from any window, for
894 identification purposes.
895
896 @remarks The interpretation of this function differs from class to class.
897 For frames and dialogs, the value returned is the
898 title. For buttons or static text controls, it is the
899 button text. This function can be useful for
900 meta-programs (such as testing tools or special-needs
901 access programs) which need to identify windows by name.
902 */
903 virtual wxString GetLabel() const;
904
905 /**
906 Returns the maximum size of window's client area.
907 This is an indication to the sizer layout mechanism that this is the maximum
908 possible size as well as the upper bound on window's size settable using
909 SetClientSize().
910
911 @see GetMaxSize()
912 */
913 wxSize GetMaxClientSize() const;
914
915 /**
916 Returns the maximum size of the window. This is an indication to the sizer
917 layout mechanism that this is the maximum possible size as well as the upper
918 bound on window's size settable using SetSize().
919
920 @see GetMaxClientSize()
921 */
922 wxSize GetMaxSize() const;
923
924 /**
925 Returns the minimum size of window's client area, an indication to the sizer
926 layout mechanism that this is the minimum required size of its client area. It
927 normally just returns the value set by
928 SetMinClientSize(), but it can be overridden
929 to do the calculation on demand.
930
931 @see GetMinSize()
932 */
933 virtual wxSize GetMinClientSize() const;
934
935 /**
936 Returns the minimum size of the window, an indication to the sizer layout
937 mechanism that this is the minimum required size.
938
939 This method normally just returns the value set by SetMinSize(), but it
940 can be overridden to do the calculation on demand.
941
942 @see GetMinClientSize()
943 */
944 virtual wxSize GetMinSize() const;
945
946 /**
947 Returns the window's name.
948
949 @remarks This name is not guaranteed to be unique; it is up to the
950 programmer to supply an appropriate name in the window
951 constructor or via SetName().
952
953 @see SetName()
954 */
955 virtual wxString GetName() const;
956
957 /**
958 Returns the next window after this one among the parent children or @NULL if
959 this window is the last child.
960
961 @since 2.8.8
962
963 @see GetPrevSibling()
964 */
965 wxWindow* GetNextSibling() const;
966
967 /**
968 Returns the parent of the window, or @NULL if there is no parent.
969 */
970 virtual wxWindow* GetParent() const;
971
972 //@{
973 /**
974 This function shows a popup menu at the given position in this window and
975 returns the selected id. It can be more convenient than the general purpose
976 PopupMenu() function for simple menus proposing a
977 choice in a list of strings to the user.
978
979 @param menu
980 The menu to show
981 @param pos
982 The position at which to show the menu in client coordinates
983 @param x
984 The horizontal position of the menu
985 @param y
986 The vertical position of the menu
987
988 @return The selected menu item id or wxID_NONE if none selected or an
989 error occurred.
990 */
991 int GetPopupMenuSelectionFromUser(wxMenu& menu,
992 const wxPoint& pos);
993 int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
994 //@}
995
996 //@{
997 /**
998 This gets the position of the window in pixels, relative to the parent window
999 for the child windows or relative to the display origin for the top level
1000 windows.
1001
1002 @param x
1003 Receives the x position of the window if non-@NULL.
1004 @param y
1005 Receives the y position of the window if non-@NULL.
1006
1007 @see GetScreenPosition()
1008 */
1009 void GetPosition(int* x, int* y) const;
1010 wxPoint GetPosition() const;
1011 //@}
1012
1013 /**
1014 Returns the previous window before this one among the parent children or @c
1015 @NULL if
1016 this window is the first child.
1017
1018 @since 2.8.8
1019
1020 @see GetNextSibling()
1021 */
1022 wxWindow* GetPrevSibling() const;
1023
1024 /**
1025 Returns the position and size of the window as a wxRect object.
1026
1027 @see GetScreenRect()
1028 */
1029 wxRect GetRect() const;
1030
1031 //@{
1032 /**
1033 Returns the window position in screen coordinates, whether the window is a
1034 child window or a top level one.
1035
1036 @param x
1037 Receives the x position of the window on the screen if non-@NULL.
1038 @param y
1039 Receives the y position of the window on the screen if non-@NULL.
1040
1041 @see GetPosition()
1042 */
1043 void GetScreenPosition(int* x, int* y) const;
1044 wxPoint GetScreenPosition() const;
1045 //@}
1046
1047 /**
1048 Returns the position and size of the window on the screen as a
1049 wxRect object.
1050
1051 @see GetRect()
1052 */
1053 wxRect GetScreenRect() const;
1054
1055 /**
1056 Returns the built-in scrollbar position.
1057
1058 @see See SetScrollbar()
1059 */
1060 virtual int GetScrollPos(int orientation);
1061
1062 /**
1063 Returns the built-in scrollbar range.
1064
1065 @see SetScrollbar()
1066 */
1067 virtual int GetScrollRange(int orientation);
1068
1069 /**
1070 Returns the built-in scrollbar thumb size.
1071
1072 @see SetScrollbar()
1073 */
1074 virtual int GetScrollThumb(int orientation);
1075
1076 //@{
1077 /**
1078 Returns the size of the entire window in pixels, including title bar, border,
1079 scrollbars, etc.
1080 Note that if this window is a top-level one and it is currently minimized, the
1081 returned size is the restored window size, not the size of the window icon.
1082
1083 @param width
1084 Receives the window width.
1085 @param height
1086 Receives the window height.
1087
1088 @see GetClientSize(), GetVirtualSize()
1089 */
1090 void GetSize(int* width, int* height) const;
1091 const wxSize GetSize() const;
1092 //@}
1093
1094 /**
1095 Return the sizer associated with the window by a previous call to
1096 SetSizer() or @NULL.
1097 */
1098 wxSizer* GetSizer() const;
1099
1100 //@{
1101 /**
1102 Gets the dimensions of the string as it would be drawn on the
1103 window with the currently selected font.
1104 The text extent is returned in @a w and @a h pointers (first form) or as a
1105 wxSize object (second form).
1106
1107 @param string
1108 String whose extent is to be measured.
1109 @param w
1110 Return value for width.
1111 @param h
1112 Return value for height.
1113 @param descent
1114 Return value for descent (optional).
1115 @param externalLeading
1116 Return value for external leading (optional).
1117 @param font
1118 Font to use instead of the current window font (optional).
1119 @param use16
1120 If @true, string contains 16-bit characters. The default is @false.
1121 */
1122 virtual void GetTextExtent(const wxString& string, int* w,
1123 int* h,
1124 int* descent = NULL,
1125 int* externalLeading = NULL,
1126 const wxFont* font = NULL,
1127 bool use16 = false) const;
1128 const wxSize GetTextExtent(const wxString& string) const;
1129 //@}
1130
1131 /**
1132 Get the associated tooltip or @NULL if none.
1133 */
1134 wxToolTip* GetToolTip() const;
1135
1136 /**
1137 Returns the region specifying which parts of the window have been damaged.
1138 Should
1139 only be called within an wxPaintEvent handler.
1140
1141 @see wxRegion, wxRegionIterator
1142 */
1143 virtual wxRegion GetUpdateRegion() const;
1144
1145 /**
1146 Returns a pointer to the current validator for the window, or @NULL if there is
1147 none.
1148 */
1149 wxValidator* GetValidator() const;
1150
1151 //@{
1152 /**
1153 This gets the virtual size of the window in pixels. By default it
1154 returns the client size of the window, but after a call to
1155 SetVirtualSize() it will return
1156 that size.
1157
1158 @param width
1159 Receives the window virtual width.
1160 @param height
1161 Receives the window virtual height.
1162 */
1163 void GetVirtualSize(int* width, int* height) const;
1164 const wxSize GetVirtualSize() const;
1165 //@}
1166
1167 /**
1168 Returns the size of the left/right and top/bottom borders of this window in x
1169 and y components of the result respectively.
1170 */
1171 wxSize GetWindowBorderSize() const;
1172
1173 /**
1174 Gets the window style that was passed to the constructor or @b Create
1175 method. @b GetWindowStyle() is another name for the same function.
1176 */
1177 long GetWindowStyleFlag() const;
1178
1179 /**
1180 Returns the value previously passed to
1181 SetWindowVariant().
1182 */
1183 wxWindowVariant GetWindowVariant() const;
1184
1185 /**
1186 This function will generate the appropriate call to
1187 Navigate() if the key event is one normally used for
1188 keyboard navigation and return @true in this case.
1189
1190 @return Returns @true if the key pressed was for navigation and was
1191 handled, @false otherwise.
1192
1193 @see Navigate()
1194 */
1195 bool HandleAsNavigationKey(const wxKeyEvent& event);
1196
1197 /**
1198 Shorthand for @c
1199 wxWindow::GetEventHandler()-wxEvtHandler::SafelyProcessEvent(event).
1200 */
1201 bool HandleWindowEvent(wxEvent& event);
1202
1203 /**
1204 Returns @true if this window has the current mouse capture.
1205
1206 @see CaptureMouse(), ReleaseMouse(), wxMouseCaptureLostEvent,
1207 wxMouseCaptureChangedEvent
1208 */
1209 virtual bool HasCapture() const;
1210
1211 /**
1212 Returns @true if the window has the given @a exFlag bit set in its
1213 extra styles.
1214
1215 @see SetExtraStyle()
1216 */
1217 bool HasExtraStyle(int exFlag) const;
1218
1219 /**
1220 Returns @true if the window has the given @a flag bit set.
1221 */
1222 bool HasFlag(int flag) const;
1223
1224 /**
1225 Returns @true if the window (or in case of composite controls, its main
1226 child window) has focus.
1227
1228 @see FindFocus()
1229 */
1230 virtual bool HasFocus() const;
1231
1232 /**
1233 This method should be overridden to return @true if this window has
1234 multiple pages. All standard class with multiple pages such as
1235 wxNotebook, wxListbook and
1236 wxTreebook already override it to return @true
1237 and user-defined classes with similar behaviour should do it as well to allow
1238 the library to handle such windows appropriately.
1239 */
1240 virtual bool HasMultiplePages() const;
1241
1242 /**
1243 Returns @true if this window has a scroll bar for this orientation.
1244
1245 @param orient
1246 Orientation to check, either wxHORIZONTAL or wxVERTICAL.
1247 */
1248 virtual bool HasScrollbar(int orient) const;
1249
1250 /**
1251 Returns @true if this window background is transparent (as, for example, for
1252 wxStaticText) and should show the parent window background.
1253 This method is mostly used internally by the library itself and you normally
1254 shouldn't have to call it. You may, however, have to override it in your
1255 wxWindow-derived class to ensure that background is painted correctly.
1256 */
1257 virtual bool HasTransparentBackground() const;
1258
1259 /**
1260 Equivalent to calling wxWindow::Show(@false).
1261 */
1262 bool Hide();
1263
1264 /**
1265 This function hides a window, like Hide(), but using a special visual
1266 effect if possible.
1267
1268 The parameters of this function are the same as for ShowWithEffect(),
1269 please see their description there.
1270
1271 @since 2.9.0
1272 */
1273 virtual bool HideWithEffect(wxShowEffect effect,
1274 unsigned timeout = 0);
1275
1276 /**
1277 This function is (or should be, in case of custom controls) called during
1278 window creation to intelligently set up the window visual attributes, that is
1279 the font and the foreground and background colours.
1280 By "intelligently" the following is meant: by default, all windows use their
1281 own @ref GetClassDefaultAttributes() default attributes. However
1282 if some of the parents attributes are explicitly (that is, using
1283 SetFont() and not
1284 wxWindow::SetOwnFont) changed and if the
1285 corresponding attribute hadn't been explicitly set for this window itself,
1286 then this window takes the same value as used by the parent. In addition, if
1287 the window overrides ShouldInheritColours()
1288 to return @false, the colours will not be changed no matter what and only the
1289 font might.
1290 This rather complicated logic is necessary in order to accommodate the
1291 different usage scenarios. The most common one is when all default attributes
1292 are used and in this case, nothing should be inherited as in modern GUIs
1293 different controls use different fonts (and colours) than their siblings so
1294 they can't inherit the same value from the parent. However it was also deemed
1295 desirable to allow to simply change the attributes of all children at once by
1296 just changing the font or colour of their common parent, hence in this case we
1297 do inherit the parents attributes.
1298 */
1299 void InheritAttributes();
1300
1301 /**
1302 Sends an @c wxEVT_INIT_DIALOG event, whose handler usually transfers data
1303 to the dialog via validators.
1304 */
1305 void InitDialog();
1306
1307 /**
1308 Resets the cached best size value so it will be recalculated the next time it
1309 is needed.
1310 */
1311 void InvalidateBestSize();
1312
1313 /**
1314 Returns @true if the window contents is double-buffered by the system, i.e. if
1315 any drawing done on the window is really done on a temporary backing surface
1316 and transferred to the screen all at once later.
1317
1318 @see wxBufferedDC
1319 */
1320 virtual bool IsDoubleBuffered() const;
1321
1322 /**
1323 Returns @true if the window is enabled, i.e. if it accepts user input, @c
1324 @false
1325 otherwise.
1326 Notice that this method can return @false even if this window itself hadn't
1327 been explicitly disabled when one of its parent windows is disabled. To get the
1328 intrinsic status of this window, use
1329 IsThisEnabled()
1330
1331 @see Enable()
1332 */
1333 virtual bool IsEnabled() const;
1334
1335 //@{
1336 /**
1337 Returns @true if the given point or rectangle area has been exposed since the
1338 last repaint. Call this in an paint event handler to optimize redrawing by
1339 only redrawing those areas, which have been exposed.
1340 */
1341 bool IsExposed(int x, int y) const;
1342 const bool IsExposed(wxPoint amp;pt) const;
1343 const bool IsExposed(int x, int y, int w, int h) const;
1344 const bool IsExposed(wxRect amp;rect) const;
1345 //@}
1346
1347 /**
1348 Returns @true if the window is currently frozen by a call to
1349 Freeze().
1350
1351 @see Freeze(), Thaw()
1352 */
1353 virtual bool IsFrozen() const;
1354
1355 /**
1356 Returns @true if the window is retained, @false otherwise.
1357
1358 @remarks Retained windows are only available on X platforms.
1359 */
1360 virtual bool IsRetained() const;
1361
1362 /**
1363 Return whether a scrollbar is always shown.
1364
1365 @param orient
1366 Orientation to check, either wxHORIZONTAL or wxVERTICAL.
1367
1368 @see AlwaysShowScrollbars()
1369 */
1370 bool IsScrollbarAlwaysShown(int orient);
1371
1372 /**
1373 Returns @true if the window is shown, @false if it has been hidden.
1374
1375 @see IsShownOnScreen()
1376 */
1377 virtual bool IsShown() const;
1378
1379 /**
1380 Returns @true if the window is physically visible on the screen, i.e. it
1381 is shown and all its parents up to the toplevel window are shown as well.
1382
1383 @see IsShown()
1384 */
1385 virtual bool IsShownOnScreen() const;
1386
1387 /**
1388 Returns @true if this window is intrinsically enabled, @false otherwise,
1389 i.e.
1390 if @ref Enable() Enable(@false) had been called. This method is
1391 mostly used for wxWidgets itself, user code should normally use
1392 IsEnabled() instead.
1393 */
1394 bool IsThisEnabled() const;
1395
1396 /**
1397 Returns @true if the given window is a top-level one. Currently all frames and
1398 dialogs are considered to be top-level windows (even if they have a parent
1399 window).
1400 */
1401 bool IsTopLevel() const;
1402
1403 /**
1404 Invokes the constraint-based layout algorithm or the sizer-based algorithm
1405 for this window.
1406
1407 See SetAutoLayout(): when auto layout is on, this function gets called automatically
1408 when the window is resized.
1409
1410 @see @ref overview_windowsizing
1411 */
1412 void Layout();
1413
1414 /**
1415 Lowers the window to the bottom of the window hierarchy (Z-order).
1416
1417 @see Raise()
1418 */
1419 void Lower();
1420
1421 /**
1422 Disables all other windows in the application so that
1423 the user can only interact with this window.
1424
1425 @param flag
1426 If @true, this call disables all other windows in the application so that
1427 the user can only interact with this window. If @false, the effect is
1428 reversed.
1429 */
1430 virtual void MakeModal(bool flag);
1431
1432 //@{
1433 /**
1434 Moves the window to the given position.
1435
1436 @param x
1437 Required x position.
1438 @param y
1439 Required y position.
1440 @param pt
1441 wxPoint object representing the position.
1442
1443 @remarks Implementations of SetSize can also implicitly implement the
1444 Move() function, which is defined in the base
1445 wxWindow class as the call:
1446
1447 @see SetSize()
1448 */
1449 void Move(int x, int y);
1450 void Move(const wxPoint& pt);
1451 //@}
1452
1453 /**
1454 Moves this window in the tab navigation order after the specified @e win.
1455 This means that when the user presses @c TAB key on that other window,
1456 the focus switches to this window.
1457 Default tab order is the same as creation order, this function and
1458 MoveBeforeInTabOrder() allow to change
1459 it after creating all the windows.
1460
1461 @param win
1462 A sibling of this window which should precede it in tab order,
1463 must not be @NULL
1464 */
1465 void MoveAfterInTabOrder(wxWindow* win);
1466
1467 /**
1468 Same as MoveAfterInTabOrder() except that
1469 it inserts this window just before @a win instead of putting it right after
1470 it.
1471 */
1472 void MoveBeforeInTabOrder(wxWindow* win);
1473
1474 /**
1475 Performs a keyboard navigation action starting from this window. This method is
1476 equivalent to calling NavigateIn() method on the
1477 parent window.
1478
1479 @param flags
1480 A combination of wxNavigationKeyEvent::IsForward and
1481 wxNavigationKeyEvent::WinChange.
1482
1483 @return Returns @true if the focus was moved to another window or @false
1484 if nothing changed.
1485
1486 @remarks You may wish to call this from a text control custom keypress
1487 handler to do the default navigation behaviour for the
1488 tab key, since the standard default behaviour for a
1489 multiline text control with the wxTE_PROCESS_TAB style
1490 is to insert a tab and not navigate to the next
1491 control. See also wxNavigationKeyEvent and
1492 HandleAsNavigationKey.
1493 */
1494 bool Navigate(int flags = wxNavigationKeyEvent::IsForward);
1495
1496 /**
1497 Performs a keyboard navigation action inside this window.
1498 See Navigate() for more information.
1499 */
1500 bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward);
1501
1502 /**
1503 Create a new ID or range of IDs that are not currently in use. The
1504 IDs will be reserved until assigned to a wxWindowIDRef()
1505 or unreserved with UnreserveControlId().
1506 See @ref overview_windowids "Window IDs Overview" for more information.
1507
1508 @param count
1509 The number of sequential IDs to reserve.
1510
1511 @return Returns the ID or the first ID of the range, or wxID_NONE if the
1512 specified number of identifiers couldn't be allocated.
1513
1514 @see UnreserveControlId(), wxIdManager, @ref overview_windowids
1515 "Window IDs Overview"
1516 */
1517 static wxWindowID NewControlId(int count = 1);
1518
1519 /**
1520 This virtual function is normally only used internally, but
1521 sometimes an application may need it to implement functionality
1522 that should not be disabled by an application defining an OnIdle
1523 handler in a derived class.
1524 This function may be used to do delayed painting, for example,
1525 and most implementations call UpdateWindowUI()
1526 in order to send update events to the window in idle time.
1527 */
1528 virtual void OnInternalIdle();
1529
1530 /**
1531 Same as #ScrollLines (-1).
1532 */
1533 bool LineUp();
1534
1535 /**
1536 Same as #ScrollLines (1).
1537 */
1538 bool LineDown();
1539
1540 /**
1541 Same as #ScrollPages (-1).
1542 */
1543 bool PageUp();
1544
1545 /**
1546 Same as #ScrollPages (1).
1547 */
1548 bool PageDown();
1549
1550
1551 /**
1552 Removes and returns the top-most event handler on the event handler stack.
1553
1554 @param deleteHandler
1555 If this is @true, the handler will be deleted after it is removed. The
1556 default value is @false.
1557
1558 @see SetEventHandler(), GetEventHandler(),
1559 PushEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1560 */
1561 wxEvtHandler* PopEventHandler(bool deleteHandler = false) const;
1562
1563 //@{
1564 /**
1565 Pops up the given menu at the specified coordinates, relative to this
1566 window, and returns control when the user has dismissed the menu. If a
1567 menu item is selected, the corresponding menu event is generated and will be
1568 processed as usually. If the coordinates are not specified, current mouse
1569 cursor position is used.
1570
1571 @param menu
1572 Menu to pop up.
1573 @param pos
1574 The position where the menu will appear.
1575 @param x
1576 Required x position for the menu to appear.
1577 @param y
1578 Required y position for the menu to appear.
1579
1580 @remarks Just before the menu is popped up, wxMenu::UpdateUI is called to
1581 ensure that the menu items are in the correct state.
1582 The menu does not get deleted by the window.
1583
1584 @see wxMenu
1585 */
1586 bool PopupMenu(wxMenu* menu,
1587 const wxPoint& pos = wxDefaultPosition);
1588 bool PopupMenu(wxMenu* menu, int x, int y);
1589 //@}
1590
1591 /**
1592 Pushes this event handler onto the event stack for the window.
1593
1594 @param handler
1595 Specifies the handler to be pushed.
1596
1597 @remarks An event handler is an object that is capable of processing the
1598 events sent to a window. By default, the window is its
1599 own event handler, but an application may wish to
1600 substitute another, for example to allow central
1601 implementation of event-handling for a variety of
1602 different window classes.
1603
1604 @see SetEventHandler(), GetEventHandler(),
1605 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1606 */
1607 void PushEventHandler(wxEvtHandler* handler);
1608
1609 /**
1610 Raises the window to the top of the window hierarchy (Z-order).
1611 In current version of wxWidgets this works both for managed and child windows.
1612
1613 @see Lower()
1614 */
1615 void Raise();
1616
1617 /**
1618 Causes this window, and all of its children recursively (except under wxGTK1
1619 where this is not implemented), to be repainted. Note that repainting doesn't
1620 happen immediately but only during the next event loop iteration, if you need
1621 to update the window immediately you should use Update()
1622 instead.
1623
1624 @param eraseBackground
1625 If @true, the background will be
1626 erased.
1627 @param rect
1628 If non-@NULL, only the given rectangle will
1629 be treated as damaged.
1630
1631 @see RefreshRect()
1632 */
1633 virtual void Refresh(bool eraseBackground = true,
1634 const wxRect* rect = NULL);
1635
1636 /**
1637 Redraws the contents of the given rectangle: only the area inside it will be
1638 repainted.
1639 This is the same as Refresh() but has a nicer syntax
1640 as it can be called with a temporary wxRect object as argument like this
1641 @c RefreshRect(wxRect(x, y, w, h)).
1642 */
1643 void RefreshRect(const wxRect& rect, bool eraseBackground = true);
1644
1645 /**
1646 Registers a system wide hotkey. Every time the user presses the hotkey
1647 registered here, this window
1648 will receive a hotkey event. It will receive the event even if the application
1649 is in the background
1650 and does not have the input focus because the user is working with some other
1651 application.
1652
1653 @param hotkeyId
1654 Numeric identifier of the hotkey. For applications this must be between 0
1655 and 0xBFFF. If
1656 this function is called from a shared DLL, it must be a system wide unique
1657 identifier between 0xC000 and 0xFFFF.
1658 This is a MSW specific detail.
1659 @param modifiers
1660 A bitwise combination of wxMOD_SHIFT, wxMOD_CONTROL, wxMOD_ALT
1661 or wxMOD_WIN specifying the modifier keys that have to be pressed along
1662 with the key.
1663 @param virtualKeyCode
1664 The virtual key code of the hotkey.
1665
1666 @return @true if the hotkey was registered successfully. @false if some
1667 other application already registered a hotkey with this
1668 modifier/virtualKeyCode combination.
1669
1670 @remarks Use EVT_HOTKEY(hotkeyId, fnc) in the event table to capture the
1671 event. This function is currently only implemented
1672 under Windows. It is used in the Windows CE port for
1673 detecting hardware button presses.
1674
1675 @see UnregisterHotKey()
1676 */
1677 bool RegisterHotKey(int hotkeyId, int modifiers,
1678 int virtualKeyCode);
1679
1680 /**
1681 Releases mouse input captured with CaptureMouse().
1682
1683 @see CaptureMouse(), HasCapture(), ReleaseMouse(),
1684 wxMouseCaptureLostEvent, wxMouseCaptureChangedEvent
1685 */
1686 virtual void ReleaseMouse();
1687
1688 /**
1689 Removes a child window. This is called automatically by window deletion
1690 functions so should not be required by the application programmer.
1691 Notice that this function is mostly internal to wxWidgets and shouldn't be
1692 called by the user code.
1693
1694 @param child
1695 Child window to remove.
1696 */
1697 virtual void RemoveChild(wxWindow* child);
1698
1699 /**
1700 Find the given @a handler in the windows event handler chain and remove (but
1701 not delete) it from it.
1702
1703 @param handler
1704 The event handler to remove, must be non-@NULL and
1705 must be present in this windows event handlers chain
1706
1707 @return Returns @true if it was found and @false otherwise (this also
1708 results in an assert failure so this function should
1709 only be called when the handler is supposed to be
1710 there).
1711
1712 @see PushEventHandler(), PopEventHandler()
1713 */
1714 bool RemoveEventHandler(wxEvtHandler* handler);
1715
1716 /**
1717 Reparents the window, i.e the window will be removed from its
1718 current parent window (e.g. a non-standard toolbar in a wxFrame)
1719 and then re-inserted into another.
1720
1721 @param newParent
1722 New parent.
1723 */
1724 virtual bool Reparent(wxWindow* newParent);
1725
1726 //@{
1727 /**
1728 Converts from screen to client window coordinates.
1729
1730 @param x
1731 Stores the screen x coordinate and receives the client x coordinate.
1732 @param y
1733 Stores the screen x coordinate and receives the client x coordinate.
1734 @param pt
1735 The screen position for the second form of the function.
1736 */
1737 virtual void ScreenToClient(int* x, int* y) const;
1738 const virtual wxPoint ScreenToClient(const wxPoint& pt) const;
1739 //@}
1740
1741 /**
1742 Scrolls the window by the given number of lines down (if @a lines is
1743 positive) or up.
1744
1745 @return Returns @true if the window was scrolled, @false if it was already
1746 on top/bottom and nothing was done.
1747
1748 @remarks This function is currently only implemented under MSW and
1749 wxTextCtrl under wxGTK (it also works for wxScrolled classes
1750 under all platforms).
1751
1752 @see ScrollPages()
1753 */
1754 virtual bool ScrollLines(int lines);
1755
1756 /**
1757 Scrolls the window by the given number of pages down (if @a pages is
1758 positive) or up.
1759
1760 @return Returns @true if the window was scrolled, @false if it was already
1761 on top/bottom and nothing was done.
1762
1763 @remarks This function is currently only implemented under MSW and wxGTK.
1764
1765 @see ScrollLines()
1766 */
1767 virtual bool ScrollPages(int pages);
1768
1769 /**
1770 Physically scrolls the pixels in the window and move child windows accordingly.
1771
1772 @param dx
1773 Amount to scroll horizontally.
1774 @param dy
1775 Amount to scroll vertically.
1776 @param rect
1777 Rectangle to scroll, if it is @NULL, the whole window is
1778 scrolled (this is always the case under wxGTK which doesn't support this
1779 parameter)
1780
1781 @remarks Note that you can often use wxScrolled instead of using this
1782 function directly.
1783 */
1784 virtual void ScrollWindow(int dx, int dy,
1785 const wxRect* rect = NULL);
1786
1787 /**
1788 Sets the accelerator table for this window. See wxAcceleratorTable.
1789 */
1790 virtual void SetAcceleratorTable(const wxAcceleratorTable& accel);
1791
1792 /**
1793 Sets the accessible for this window. Any existing accessible for this window
1794 will be deleted first, if not identical to @e accessible.
1795 See also wxAccessible.
1796 */
1797 void SetAccessible(wxAccessible* accessible);
1798
1799 /**
1800 Determines whether the Layout() function will
1801 be called automatically when the window is resized. Please note that this only
1802 happens for the windows usually used to contain children, namely
1803 wxPanel and wxTopLevelWindow
1804 (and the classes deriving from them).
1805 This method is called implicitly by
1806 SetSizer() but if you use
1807 SetConstraints() you should call it
1808 manually or otherwise the window layout won't be correctly updated when its
1809 size changes.
1810
1811 @param autoLayout
1812 Set this to @true if you wish the Layout function to be
1813 called automatically when the window is resized.
1814
1815 @see SetConstraints()
1816 */
1817 void SetAutoLayout(bool autoLayout);
1818
1819 /**
1820 Sets the background colour of the window.
1821 Please see InheritAttributes() for
1822 explanation of the difference between this method and
1823 SetOwnBackgroundColour().
1824
1825 @param colour
1826 The colour to be used as the background colour, pass
1827 wxNullColour to reset to the default colour.
1828
1829 @remarks The background colour is usually painted by the default
1830 wxEraseEvent event handler function under Windows and
1831 automatically under GTK.
1832
1833 @see GetBackgroundColour(), SetForegroundColour(),
1834 GetForegroundColour(), ClearBackground(),
1835 Refresh(), wxEraseEvent
1836 */
1837 virtual bool SetBackgroundColour(const wxColour& colour);
1838
1839 /**
1840 Sets the background style of the window. see
1841 GetBackgroundStyle() for the description
1842 of the possible style values.
1843
1844 @see SetBackgroundColour(), GetForegroundColour(),
1845 SetTransparent()
1846 */
1847 virtual void SetBackgroundStyle(wxBackgroundStyle style);
1848
1849 /**
1850 This method is only implemented by ports which have support for
1851 native TAB traversal (such as GTK+ 2.0). It is called by wxWidgets'
1852 container control code to give the native system a hint when
1853 doing TAB traversal. A call to this does not disable or change
1854 the effect of programmatically calling
1855 SetFocus().
1856
1857 @see wxFocusEvent, wxPanel::SetFocus, wxPanel::SetFocusIgnoringChildren
1858 */
1859 virtual void SetCanFocus(bool canFocus);
1860
1861 /**
1862 Sets the caret() associated with the window.
1863 */
1864 void SetCaret(wxCaret* caret) const;
1865
1866 //@{
1867 /**
1868 This sets the size of the window client area in pixels. Using this function to
1869 size a window
1870 tends to be more device-independent than SetSize(), since the application need
1871 not
1872 worry about what dimensions the border or title bar have when trying to fit the
1873 window
1874 around panel items, for example.
1875
1876 @param width
1877 The required client area width.
1878 @param height
1879 The required client area height.
1880 @param size
1881 The required client size.
1882 */
1883 virtual void SetClientSize(int width, int height);
1884 virtual void SetClientSize(const wxSize& size);
1885 //@}
1886
1887 /**
1888 Sets the window to have the given layout constraints. The window
1889 will then own the object, and will take care of its deletion.
1890 If an existing layout constraints object is already owned by the
1891 window, it will be deleted.
1892
1893 @param constraints
1894 The constraints to set. Pass @NULL to disassociate and delete the window's
1895 constraints.
1896
1897 @remarks You must call SetAutoLayout() to tell a window to use
1898 the constraints automatically in OnSize; otherwise, you
1899 must override OnSize and call Layout() explicitly. When
1900 setting both a wxLayoutConstraints and a wxSizer, only
1901 the sizer will have effect.
1902 */
1903 void SetConstraints(wxLayoutConstraints* constraints);
1904
1905 /**
1906 This normally does not need to be called by user code. It is called
1907 when a window is added to a sizer, and is used so the window can
1908 remove itself from the sizer when it is destroyed.
1909 */
1910 void SetContainingSizer(wxSizer* sizer);
1911
1912 /**
1913 Sets the window's cursor. Notice that the window cursor also sets it for the
1914 children of the window implicitly.
1915 The @a cursor may be @c wxNullCursor in which case the window cursor will
1916 be reset back to default.
1917
1918 @param cursor
1919 Specifies the cursor that the window should normally display.
1920
1921 @see ::wxSetCursor, wxCursor
1922 */
1923 virtual void SetCursor(const wxCursor& cursor);
1924
1925 /**
1926 Associates a drop target with this window.
1927 If the window already has a drop target, it is deleted.
1928
1929 @see GetDropTarget(), @ref overview_dnd
1930 */
1931 void SetDropTarget(wxDropTarget* target);
1932
1933 /**
1934 Sets the event handler for this window.
1935
1936 @param handler
1937 Specifies the handler to be set.
1938
1939 @remarks An event handler is an object that is capable of processing the
1940 events sent to a window. By default, the window is its
1941 own event handler, but an application may wish to
1942 substitute another, for example to allow central
1943 implementation of event-handling for a variety of
1944 different window classes.
1945
1946 @see GetEventHandler(), PushEventHandler(),
1947 PopEventHandler(), wxEvtHandler::ProcessEvent, wxEvtHandler
1948 */
1949 void SetEventHandler(wxEvtHandler* handler);
1950
1951 /**
1952 Sets the extra style bits for the window. The currently defined extra style
1953 bits are:
1954
1955 @b wxWS_EX_VALIDATE_RECURSIVELY
1956
1957 TransferDataTo/FromWindow()
1958 and Validate() methods will recursively descend into all children of the
1959 window if it has this style flag set.
1960
1961 @b wxWS_EX_BLOCK_EVENTS
1962
1963 Normally, the command
1964 events are propagated upwards to the window parent recursively until a handler
1965 for them is found. Using this style allows to prevent them from being
1966 propagated beyond this window. Notice that wxDialog has this style on by
1967 default for the reasons explained in the
1968 @ref overview_eventhandling "Event Handling Overview".
1969
1970 @b wxWS_EX_TRANSIENT
1971
1972 This can be used to prevent a
1973 window from being used as an implicit parent for the dialogs which were
1974 created without a parent. It is useful for the windows which can disappear at
1975 any moment as creating children of such windows results in fatal problems.
1976
1977 @b wxWS_EX_CONTEXTHELP
1978
1979 Under Windows, puts a query
1980 button on the caption. When pressed, Windows will go into a context-sensitive
1981 help mode and wxWidgets will send a wxEVT_HELP event if the user clicked on an
1982 application window.
1983 This style cannot be used together with wxMAXIMIZE_BOX or wxMINIMIZE_BOX, so
1984 these two styles are automatically turned of if this one is used.
1985
1986 @b wxWS_EX_PROCESS_IDLE
1987
1988 This window should always process idle events, even
1989 if the mode set by wxIdleEvent::SetMode is wxIDLE_PROCESS_SPECIFIED.
1990
1991 @b wxWS_EX_PROCESS_UI_UPDATES
1992
1993 This window should always process UI update events,
1994 even if the mode set by wxUpdateUIEvent::SetMode is
1995 wxUPDATE_UI_PROCESS_SPECIFIED.
1996 */
1997 void SetExtraStyle(long exStyle);
1998
1999 /**
2000 This sets the window to receive keyboard input.
2001
2002 @see HasFocus(), wxFocusEvent, wxPanel::SetFocus,
2003 wxPanel::SetFocusIgnoringChildren
2004 */
2005 virtual void SetFocus();
2006
2007 /**
2008 This function is called by wxWidgets keyboard navigation code when the user
2009 gives the focus to this window from keyboard (e.g. using @c TAB key).
2010 By default this method simply calls SetFocus() but
2011 can be overridden to do something in addition to this in the derived classes.
2012 */
2013 virtual void SetFocusFromKbd();
2014
2015 /**
2016 Sets the font for this window. This function should not be called for the
2017 parent window if you don't want its font to be inherited by its children,
2018 use SetOwnFont() instead in this case and
2019 see InheritAttributes() for more
2020 explanations.
2021 Please notice that the given font is not automatically used for
2022 wxPaintDC objects associated with this window, you need to
2023 call wxDC::SetFont too. However this font is used by
2024 any standard controls for drawing their text as well as by
2025 GetTextExtent().
2026
2027 @param font
2028 Font to associate with this window, pass
2029 wxNullFont to reset to the default font.
2030
2031 @return @true if the want was really changed, @false if it was already set
2032 to this font and so nothing was done.
2033
2034 @see GetFont(), InheritAttributes()
2035 */
2036 bool SetFont(const wxFont& font);
2037
2038 /**
2039 Sets the foreground colour of the window.
2040 Please see InheritAttributes() for
2041 explanation of the difference between this method and
2042 SetOwnForegroundColour().
2043
2044 @param colour
2045 The colour to be used as the foreground colour, pass
2046 wxNullColour to reset to the default colour.
2047
2048 @remarks The interpretation of foreground colour is open to
2049 interpretation according to the window class; it may be
2050 the text colour or other colour, or it may not be used
2051 at all.
2052
2053 @see GetForegroundColour(), SetBackgroundColour(),
2054 GetBackgroundColour(), ShouldInheritColours()
2055 */
2056 virtual void SetForegroundColour(const wxColour& colour);
2057
2058 /**
2059 Sets the help text to be used as context-sensitive help for this window.
2060 Note that the text is actually stored by the current wxHelpProvider
2061 implementation,
2062 and not in the window object itself.
2063
2064 @see GetHelpText(), wxHelpProvider::AddHelp()
2065 */
2066 virtual void SetHelpText(const wxString& helpText);
2067
2068 /**
2069 Sets the identifier of the window.
2070
2071 @remarks Each window has an integer identifier. If the application has
2072 not provided one, an identifier will be generated.
2073 Normally, the identifier should be provided on creation
2074 and should not be modified subsequently.
2075
2076 @see GetId(), @ref overview_windowids "Window identifiers"
2077 */
2078 void SetId(int id);
2079
2080 /**
2081 Sets the initial window size if none is given (i.e. at least one of the
2082 components of the size passed to ctor/Create() is wxDefaultCoord).
2083 */
2084 virtual void SetInitialBestSize(const wxSize& size);
2085
2086 /**
2087 A @e smart SetSize that will fill in default size components with the
2088 window's @e best size values.
2089
2090 Also sets the window's minsize to the value passed in for use with sizers.
2091 This means that if a full or partial size is passed to this function then
2092 the sizers will use that size instead of the results of GetBestSize() to
2093 determine the minimum needs of the window for layout.
2094
2095 Most controls will use this to set their initial size, and their min
2096 size to the passed in value (if any.)
2097
2098 @see SetSize(), GetBestSize(), GetEffectiveMinSize(),
2099 @ref overview_windowsizing
2100 */
2101 void SetInitialSize(const wxSize& size = wxDefaultSize);
2102
2103 /**
2104 Sets the window's label.
2105
2106 @param label
2107 The window label.
2108
2109 @see GetLabel()
2110 */
2111 virtual void SetLabel(const wxString& label);
2112
2113 /**
2114 Sets the maximum client size of the window, to indicate to the sizer
2115 layout mechanism that this is the maximum possible size of its client area.
2116
2117 @see SetMaxSize()
2118 */
2119 void SetMaxClientSize(const wxSize& size);
2120
2121 /**
2122 Sets the maximum size of the window, to indicate to the sizer layout mechanism
2123 that this is the maximum possible size.
2124
2125 @see SetMaxClientSize()
2126 */
2127 void SetMaxSize(const wxSize& size);
2128
2129 /**
2130 Sets the minimum client size of the window, to indicate to the sizer
2131 layout mechanism that this is the minimum required size of window's client
2132 area.
2133
2134 You may need to call this if you change the window size after
2135 construction and before adding to its parent sizer.
2136
2137 Note, that just as with SetMinSize(), calling this method doesn't
2138 prevent the program from explicitly making the window smaller than the
2139 specified size.
2140
2141 @see SetMinSize()
2142 */
2143 void SetMinClientSize(const wxSize& size);
2144
2145 /**
2146 Sets the minimum size of the window, to indicate to the sizer layout
2147 mechanism that this is the minimum required size.
2148
2149 You may need to call this if you change the window size after
2150 construction and before adding to its parent sizer.
2151
2152 Notice that calling this method doesn't prevent the program from making
2153 the window explicitly smaller than the specified size by calling
2154 SetSize(), it just ensures that it won't become smaller than this size
2155 during the automatic layout.
2156
2157 @see SetMinClientSize()
2158 */
2159 void SetMinSize(const wxSize& size);
2160
2161 /**
2162 Sets the window's name.
2163
2164 @param name
2165 A name to set for the window.
2166
2167 @see GetName()
2168 */
2169 virtual void SetName(const wxString& name);
2170
2171 /**
2172 Sets the background colour of the window but prevents it from being inherited
2173 by the children of this window.
2174
2175 @see SetBackgroundColour(), InheritAttributes()
2176 */
2177 void SetOwnBackgroundColour(const wxColour& colour);
2178
2179 /**
2180 Sets the font of the window but prevents it from being inherited by the
2181 children of this window.
2182
2183 @see SetFont(), InheritAttributes()
2184 */
2185 void SetOwnFont(const wxFont& font);
2186
2187 /**
2188 Sets the foreground colour of the window but prevents it from being inherited
2189 by the children of this window.
2190
2191 @see SetForegroundColour(), InheritAttributes()
2192 */
2193 void SetOwnForegroundColour(const wxColour& colour);
2194
2195 /**
2196 Obsolete - use wxDC::SetPalette instead.
2197 */
2198 virtual void SetPalette(wxPalette* palette);
2199
2200 /**
2201 Sets the position of one of the built-in scrollbars.
2202
2203 @param orientation
2204 Determines the scrollbar whose position is to be set. May be wxHORIZONTAL
2205 or wxVERTICAL.
2206 @param pos
2207 Position in scroll units.
2208 @param refresh
2209 @true to redraw the scrollbar, @false otherwise.
2210
2211 @remarks This function does not directly affect the contents of the
2212 window: it is up to the application to take note of
2213 scrollbar attributes and redraw contents accordingly.
2214
2215 @see SetScrollbar(), GetScrollPos(), GetScrollThumb(), wxScrollBar,
2216 wxScrolled
2217 */
2218 virtual void SetScrollPos(int orientation, int pos,
2219 bool refresh = true);
2220
2221 /**
2222 Sets the scrollbar properties of a built-in scrollbar.
2223
2224 @param orientation
2225 Determines the scrollbar whose page size is to be set. May be wxHORIZONTAL
2226 or wxVERTICAL.
2227 @param position
2228 The position of the scrollbar in scroll units.
2229 @param thumbSize
2230 The size of the thumb, or visible portion of the scrollbar, in scroll units.
2231 @param range
2232 The maximum position of the scrollbar.
2233 @param refresh
2234 @true to redraw the scrollbar, @false otherwise.
2235
2236 @remarks Let's say you wish to display 50 lines of text, using the same
2237 font. The window is sized so that you can only see 16
2238 lines at a time.
2239
2240 @see @ref overview_scrolling, wxScrollBar, wxScrolled, wxScrollWinEvent
2241 */
2242 virtual void SetScrollbar(int orientation, int position,
2243 int thumbSize,
2244 int range,
2245 bool refresh = true);
2246
2247 //@{
2248 /**
2249 Sets the size of the window in pixels.
2250
2251 @param x
2252 Required x position in pixels, or wxDefaultCoord to indicate that the
2253 existing
2254 value should be used.
2255 @param y
2256 Required y position in pixels, or wxDefaultCoord to indicate that the
2257 existing
2258 value should be used.
2259 @param width
2260 Required width in pixels, or wxDefaultCoord to indicate that the existing
2261 value should be used.
2262 @param height
2263 Required height position in pixels, or wxDefaultCoord to indicate that the
2264 existing
2265 value should be used.
2266 @param size
2267 wxSize object for setting the size.
2268 @param rect
2269 wxRect object for setting the position and size.
2270 @param sizeFlags
2271 Indicates the interpretation of other parameters. It is a bit list of the
2272 following:
2273 wxSIZE_AUTO_WIDTH: a wxDefaultCoord width value is taken to indicate
2274 a wxWidgets-supplied default width.
2275
2276 wxSIZE_AUTO_HEIGHT: a wxDefaultCoord height value is taken to indicate
2277 a wxWidgets-supplied default height.
2278
2279 wxSIZE_AUTO: wxDefaultCoord size values are taken to indicate
2280 a wxWidgets-supplied default size.
2281
2282 wxSIZE_USE_EXISTING: existing dimensions should be used
2283 if wxDefaultCoord values are supplied.
2284
2285 wxSIZE_ALLOW_MINUS_ONE: allow negative dimensions (i.e. value of
2286 wxDefaultCoord) to be interpreted
2287 as real dimensions, not default values.
2288 wxSIZE_FORCE: normally, if the position and the size of the window are
2289 already the same as the parameters of this function, nothing is done. but
2290 with
2291 this flag a window resize may be forced even in this case (supported in wx
2292 2.6.2 and later and only implemented for MSW and ignored elsewhere
2293 currently)
2294
2295 @remarks The second form is a convenience for calling the first form with
2296 default x and y parameters, and must be used with
2297 non-default width and height values.
2298
2299 @see Move()
2300 */
2301 virtual void SetSize(int x, int y, int width, int height,
2302 int sizeFlags = wxSIZE_AUTO);
2303 virtual void SetSize(const wxRect& rect);
2304 virtual void SetSize(int width, int height);
2305 virtual void SetSize(const wxSize& size);
2306 //@}
2307
2308 /**
2309 Sets the window to have the given layout sizer. The window
2310 will then own the object, and will take care of its deletion.
2311 If an existing layout constraints object is already owned by the
2312 window, it will be deleted if the deleteOld parameter is @true.
2313 Note that this function will also call
2314 SetAutoLayout() implicitly with @true
2315 parameter if the @a sizer is non-@NULL and @false otherwise.
2316
2317 @param sizer
2318 The sizer to set. Pass @NULL to disassociate and conditionally delete
2319 the window's sizer. See below.
2320 @param deleteOld
2321 If @true (the default), this will delete any pre-existing sizer.
2322 Pass @false if you wish to handle deleting the old sizer yourself.
2323 @remarks SetSizer enables and disables Layout automatically.
2324 */
2325 void SetSizer(wxSizer* sizer, bool deleteOld = true);
2326
2327 /**
2328 This method calls SetSizer() and then
2329 wxSizer::SetSizeHints which sets the initial
2330 window size to the size needed to accommodate all sizer elements and sets the
2331 size hints which, if this window is a top level one, prevent the user from
2332 resizing it to be less than this minimial size.
2333 */
2334 void SetSizerAndFit(wxSizer* sizer, bool deleteOld = true);
2335
2336 /**
2337 This function tells a window if it should use the system's "theme" code
2338 to draw the windows' background instead if its own background drawing
2339 code. This does not always have any effect since the underlying platform
2340 obviously needs to support the notion of themes in user defined windows.
2341 One such platform is GTK+ where windows can have (very colourful) backgrounds
2342 defined by a user's selected theme.
2343 Dialogs, notebook pages and the status bar have this flag set to @true
2344 by default so that the default look and feel is simulated best.
2345 */
2346 virtual void SetThemeEnabled(bool enable);
2347
2348 //@{
2349 /**
2350 Attach a tooltip to the window.
2351 See also: GetToolTip(),
2352 wxToolTip
2353 */
2354 void SetToolTip(const wxString& tip);
2355 void SetToolTip(wxToolTip* tip);
2356 //@}
2357
2358 /**
2359 Set the transparency of the window. If the system supports transparent windows,
2360 returns @true, otherwise returns @false and the window remains fully opaque.
2361 See also CanSetTransparent().
2362 The parameter @a alpha is in the range 0..255 where 0 corresponds to a
2363 fully transparent window and 255 to the fully opaque one. The constants
2364 @c wxIMAGE_ALPHA_TRANSPARENT and @c wxIMAGE_ALPHA_OPAQUE can be
2365 used.
2366 */
2367 bool SetTransparent(wxByte alpha);
2368
2369 /**
2370 Deletes the current validator (if any) and sets the window validator, having
2371 called wxValidator::Clone to
2372 create a new validator of this type.
2373 */
2374 virtual void SetValidator(const wxValidator& validator);
2375
2376 //@{
2377 /**
2378 Sets the virtual size of the window in pixels.
2379 */
2380 void SetVirtualSize(int width, int height);
2381 void SetVirtualSize(const wxSize& size);
2382 //@}
2383
2384 /**
2385 Identical to SetWindowStyleFlag().
2386 */
2387 void SetWindowStyle(long style);
2388
2389 /**
2390 Sets the style of the window. Please note that some styles cannot be changed
2391 after the window creation and that Refresh() might
2392 need to be be called after changing the others for the change to take place
2393 immediately.
2394 See @ref overview_windowstyles "Window styles" for more information about flags.
2395
2396 @see GetWindowStyleFlag()
2397 */
2398 virtual void SetWindowStyleFlag(long style);
2399
2400 /**
2401 This function can be called under all platforms but only does anything under
2402 Mac OS X 10.3+ currently. Under this system, each of the standard control can
2403 exist in several sizes which correspond to the elements of wxWindowVariant
2404 enum:
2405
2406 By default the controls use the normal size, of course, but this function can
2407 be used to change this.
2408 */
2409 void SetWindowVariant(wxWindowVariant variant);
2410
2411 /**
2412 Return @true from here to allow the colours of this window to be changed by
2413 InheritAttributes(), returning @false
2414 forbids inheriting them from the parent window.
2415 The base class version returns @false, but this method is overridden in
2416 wxControl where it returns @true.
2417 */
2418 virtual bool ShouldInheritColours();
2419
2420 /**
2421 Shows or hides the window. You may need to call Raise()
2422 for a top level window if you want to bring it to top, although this is not
2423 needed if Show() is called immediately after the frame creation.
2424
2425 @param show
2426 If @true displays the window. Otherwise, hides it.
2427
2428 @return @true if the window has been shown or hidden or @false if nothing
2429 was done because it already was in the requested state.
2430
2431 @see IsShown(), Hide(), wxRadioBox::Show, wxShowEvent.
2432 */
2433 virtual bool Show(bool show = true);
2434
2435 /**
2436 This function shows a window, like Show(), but using a special visual
2437 effect if possible.
2438
2439 @param effect
2440 The effect to use.
2441
2442 @param timeout
2443 The @a timeout parameter specifies the time of the animation, in
2444 milliseconds. If the default value of 0 is used, the default
2445 animation time for the current platform is used.
2446
2447 @note Currently this function is only implemented in wxMSW and does the
2448 same thing as Show() in the other ports.
2449
2450 @since 2.9.0
2451
2452 @see HideWithEffect()
2453 */
2454 virtual bool ShowWithEffect(wxShowEffect effect,
2455 unsigned timeout = 0);
2456
2457 /**
2458 Reenables window updating after a previous call to Freeze().
2459
2460 To really thaw the control, it must be called exactly the same number
2461 of times as Freeze().
2462
2463 If the window has any children, they are recursively thawn too.
2464
2465 @see wxWindowUpdateLocker, Freeze(), IsFrozen()
2466 */
2467 virtual void Thaw();
2468
2469 /**
2470 Turns the given @a flag on if it's currently turned off and vice versa.
2471 This function cannot be used if the value of the flag is 0 (which is often
2472 the case for default flags).
2473 Also, please notice that not all styles can be changed after the control
2474 creation.
2475
2476 @return Returns @true if the style was turned on by this function, @false
2477 if it was switched off.
2478
2479 @see SetWindowStyleFlag(), HasFlag()
2480 */
2481 bool ToggleWindowStyle(int flag);
2482
2483 /**
2484 Transfers values from child controls to data areas specified by their
2485 validators. Returns
2486 @false if a transfer failed.
2487 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2488 the method will also call TransferDataFromWindow() of all child windows.
2489
2490 @see TransferDataToWindow(), wxValidator, Validate()
2491 */
2492 virtual bool TransferDataFromWindow();
2493
2494 /**
2495 Transfers values to child controls from data areas specified by their
2496 validators.
2497 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2498 the method will also call TransferDataToWindow() of all child windows.
2499
2500 @return Returns @false if a transfer failed.
2501
2502 @see TransferDataFromWindow(), wxValidator, Validate()
2503 */
2504 virtual bool TransferDataToWindow();
2505
2506 /**
2507 Unregisters a system wide hotkey.
2508
2509 @param hotkeyId
2510 Numeric identifier of the hotkey. Must be the same id that was passed to
2511 RegisterHotKey.
2512
2513 @return @true if the hotkey was unregistered successfully, @false if the
2514 id was invalid.
2515
2516 @remarks This function is currently only implemented under MSW.
2517
2518 @see RegisterHotKey()
2519 */
2520 bool UnregisterHotKey(int hotkeyId);
2521
2522 /**
2523 Unreserve an ID or range of IDs that was reserved by NewControlId().
2524 See @ref overview_windowids "Window IDs Overview" for more information.
2525
2526 @param id
2527 The starting ID of the range of IDs to unreserve.
2528 @param count
2529 The number of sequential IDs to unreserve.
2530
2531 @see NewControlId(), wxIdManager, @ref overview_windowids
2532 "Window IDs Overview"
2533 */
2534 static void UnreserveControlId(wxWindowID id, int count = 1);
2535
2536 /**
2537 Calling this method immediately repaints the invalidated area of the window and
2538 all of its children recursively while this would usually only happen when the
2539 flow of control returns to the event loop.
2540 Notice that this function doesn't invalidate any area of the window so
2541 nothing happens if nothing has been invalidated (i.e. marked as requiring
2542 a redraw). Use Refresh() first if you want to
2543 immediately redraw the window unconditionally.
2544 */
2545 virtual void Update();
2546
2547 /**
2548 This function sends wxUpdateUIEvents() to
2549 the window. The particular implementation depends on the window; for
2550 example a wxToolBar will send an update UI event for each toolbar button,
2551 and a wxFrame will send an update UI event for each menubar menu item.
2552 You can call this function from your application to ensure that your
2553 UI is up-to-date at this point (as far as your wxUpdateUIEvent handlers
2554 are concerned). This may be necessary if you have called
2555 wxUpdateUIEvent::SetMode or
2556 wxUpdateUIEvent::SetUpdateInterval to
2557 limit the overhead that wxWidgets incurs by sending update UI events in idle
2558 time.
2559 @a flags should be a bitlist of one or more of the following values.
2560
2561 If you are calling this function from an OnInternalIdle or OnIdle
2562 function, make sure you pass the wxUPDATE_UI_FROMIDLE flag, since
2563 this tells the window to only update the UI elements that need
2564 to be updated in idle time. Some windows update their elements
2565 only when necessary, for example when a menu is about to be shown.
2566 The following is an example of how to call UpdateWindowUI from
2567 an idle function.
2568
2569 @see wxUpdateUIEvent, DoUpdateWindowUI(), OnInternalIdle()
2570 */
2571 virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE);
2572
2573 /**
2574 Validates the current values of the child controls using their validators.
2575 If the window has @c wxWS_EX_VALIDATE_RECURSIVELY extra style flag set,
2576 the method will also call Validate() of all child windows.
2577
2578 @return Returns @false if any of the validations failed.
2579
2580 @see TransferDataFromWindow(), TransferDataToWindow(),
2581 wxValidator
2582 */
2583 virtual bool Validate();
2584
2585 /**
2586 Moves the pointer to the given position on the window.
2587 @note This function is not supported under Mac because Apple Human
2588 Interface Guidelines forbid moving the mouse cursor programmatically.
2589
2590 @param x
2591 The new x position for the cursor.
2592 @param y
2593 The new y position for the cursor.
2594 */
2595 void WarpPointer(int x, int y);
2596 };
2597
2598
2599 /// Valid values for wxWindow::ShowWithEffect() and wxWindow::HideWithEffect().
2600 enum wxShowEffect
2601 {
2602 /// Roll window to the left
2603 wxSHOW_EFFECT_ROLL_TO_LEFT,
2604 /// Roll window to the right
2605 wxSHOW_EFFECT_ROLL_TO_RIGHT,
2606 /// Roll window to the top
2607 wxSHOW_EFFECT_ROLL_TO_TOP,
2608 /// Roll window to the bottom
2609 wxSHOW_EFFECT_ROLL_TO_BOTTOM,
2610 /// Slide window to the left
2611 wxSHOW_EFFECT_SLIDE_TO_LEFT,
2612 /// Slide window to the right
2613 wxSHOW_EFFECT_SLIDE_TO_RIGHT,
2614 /// Slide window to the top
2615 wxSHOW_EFFECT_SLIDE_TO_TOP,
2616 /// Slide window to the bottom
2617 wxSHOW_EFFECT_SLIDE_TO_BOTTOM,
2618 /// Fade in or out effect
2619 wxSHOW_EFFECT_BLEND,
2620 /// Expanding or collapsing effect
2621 wxSHOW_EFFECT_EXPAND
2622 };
2623
2624
2625
2626 // ============================================================================
2627 // Global functions/macros
2628 // ============================================================================
2629
2630 /** @ingroup group_funcmacro_misc */
2631 //@{
2632
2633 /**
2634 Find the deepest window at the mouse pointer position, returning the window
2635 and current pointer position in screen coordinates.
2636
2637 @header{wx/window.h}
2638 */
2639 wxWindow* wxFindWindowAtPointer(wxPoint& pt);
2640
2641 /**
2642 Gets the currently active window (implemented for MSW and GTK only
2643 currently, always returns @NULL in the other ports).
2644
2645 @header{wx/window.h}
2646 */
2647 wxWindow* wxGetActiveWindow();
2648
2649 /**
2650 Returns the first top level parent of the given window, or in other words,
2651 the frame or dialog containing it, or @NULL.
2652
2653 @header{wx/window.h}
2654 */
2655 wxWindow* wxGetTopLevelParent(wxWindow* window);
2656
2657 //@}
2658