1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/msw/window.h
3 // Purpose: wxWindowMSW class
4 // Author: Julian Smart
5 // Modified by: Vadim Zeitlin on 13.05.99: complete refont of message handling,
6 // elimination of Default(), ...
9 // Copyright: (c) Julian Smart
10 // Licence: wxWindows licence
11 /////////////////////////////////////////////////////////////////////////////
16 // if this is set to 1, we use deferred window sizing to reduce flicker when
17 // resizing complicated window hierarchies, but this can in theory result in
18 // different behaviour than the old code so we keep the possibility to use it
19 // by setting this to 0 (in the future this should be removed completely)
21 #define wxUSE_DEFERRED_SIZING 0
23 #define wxUSE_DEFERRED_SIZING 1
26 // ---------------------------------------------------------------------------
27 // wxWindow declaration for MSW
28 // ---------------------------------------------------------------------------
30 class WXDLLIMPEXP_CORE wxWindowMSW
: public wxWindowBase
32 friend class wxSpinCtrl
;
33 friend class wxSlider
;
34 friend class wxRadioBox
;
35 #if defined __VISUALC__ && __VISUALC__ <= 1200
36 friend class wxWindowMSW
;
39 wxWindowMSW() { Init(); }
41 wxWindowMSW(wxWindow
*parent
,
43 const wxPoint
& pos
= wxDefaultPosition
,
44 const wxSize
& size
= wxDefaultSize
,
46 const wxString
& name
= wxPanelNameStr
)
49 Create(parent
, id
, pos
, size
, style
, name
);
52 virtual ~wxWindowMSW();
54 bool Create(wxWindow
*parent
,
56 const wxPoint
& pos
= wxDefaultPosition
,
57 const wxSize
& size
= wxDefaultSize
,
59 const wxString
& name
= wxPanelNameStr
);
61 // implement base class pure virtuals
62 virtual void SetLabel(const wxString
& label
);
63 virtual wxString
GetLabel() const;
68 virtual bool Show(bool show
= true);
69 virtual bool ShowWithEffect(wxShowEffect effect
,
72 return MSWShowWithEffect(true, effect
, timeout
);
74 virtual bool HideWithEffect(wxShowEffect effect
,
77 return MSWShowWithEffect(false, effect
, timeout
);
80 virtual void SetFocus();
81 virtual void SetFocusFromKbd();
83 virtual bool Reparent(wxWindowBase
*newParent
);
85 virtual void WarpPointer(int x
, int y
);
87 virtual void Refresh( bool eraseBackground
= true,
88 const wxRect
*rect
= (const wxRect
*) NULL
);
89 virtual void Update();
91 virtual void SetWindowStyleFlag(long style
);
92 virtual void SetExtraStyle(long exStyle
);
93 virtual bool SetCursor( const wxCursor
&cursor
);
94 virtual bool SetFont( const wxFont
&font
);
96 virtual int GetCharHeight() const;
97 virtual int GetCharWidth() const;
99 virtual void SetScrollbar( int orient
, int pos
, int thumbVisible
,
100 int range
, bool refresh
= true );
101 virtual void SetScrollPos( int orient
, int pos
, bool refresh
= true );
102 virtual int GetScrollPos( int orient
) const;
103 virtual int GetScrollThumb( int orient
) const;
104 virtual int GetScrollRange( int orient
) const;
105 virtual void ScrollWindow( int dx
, int dy
,
106 const wxRect
* rect
= NULL
);
108 virtual bool ScrollLines(int lines
);
109 virtual bool ScrollPages(int pages
);
111 virtual void SetLayoutDirection(wxLayoutDirection dir
);
112 virtual wxLayoutDirection
GetLayoutDirection() const;
113 virtual wxCoord
AdjustForLayoutDirection(wxCoord x
,
115 wxCoord widthTotal
) const;
117 #if wxUSE_DRAG_AND_DROP
118 virtual void SetDropTarget( wxDropTarget
*dropTarget
);
119 #endif // wxUSE_DRAG_AND_DROP
121 // Accept files for dragging
122 virtual void DragAcceptFiles(bool accept
);
124 #ifndef __WXUNIVERSAL__
125 // Native resource loading (implemented in src/msw/nativdlg.cpp)
126 // FIXME: should they really be all virtual?
127 virtual bool LoadNativeDialog(wxWindow
* parent
, wxWindowID
& id
);
128 virtual bool LoadNativeDialog(wxWindow
* parent
, const wxString
& name
);
129 wxWindow
* GetWindowChild1(wxWindowID id
);
130 wxWindow
* GetWindowChild(wxWindowID id
);
131 #endif // __WXUNIVERSAL__
134 // install and deinstall a system wide hotkey
135 virtual bool RegisterHotKey(int hotkeyId
, int modifiers
, int keycode
);
136 virtual bool UnregisterHotKey(int hotkeyId
);
137 #endif // wxUSE_HOTKEY
140 bool IsContextMenuEnabled() const { return m_contextMenuEnabled
; }
141 void EnableContextMenu(bool enable
= true) { m_contextMenuEnabled
= enable
; }
144 // window handle stuff
145 // -------------------
147 WXHWND
GetHWND() const { return m_hWnd
; }
148 void SetHWND(WXHWND hWnd
) { m_hWnd
= hWnd
; }
149 virtual WXWidget
GetHandle() const { return GetHWND(); }
151 void AssociateHandle(WXWidget handle
);
152 void DissociateHandle();
154 // does this window have deferred position and/or size?
155 bool IsSizeDeferred() const;
157 // these functions allow to register a global handler for the given Windows
158 // message: it will be called from MSWWindowProc() of any window which gets
159 // this event if it's not processed before (i.e. unlike a hook procedure it
160 // does not override the normal processing)
162 // notice that if you want to process a message for a given window only you
163 // should override its MSWWindowProc() instead
165 // type of the handler: it is called with the message parameters (except
166 // that the window object is passed instead of window handle) and should
167 // return true if it handled the message or false if it should be passed to
169 typedef bool (*MSWMessageHandler
)(wxWindowMSW
*win
,
174 // install a handler, shouldn't be called more than one for the same message
175 static bool MSWRegisterMessageHandler(int msg
, MSWMessageHandler handler
);
177 // unregister a previously registered handler
178 static void MSWUnregisterMessageHandler(int msg
, MSWMessageHandler handler
);
181 // implementation from now on
182 // ==========================
187 void OnPaint(wxPaintEvent
& event
);
189 void OnInitDialog(wxInitDialogEvent
& event
);
193 // Windows subclassing
194 void SubclassWin(WXHWND hWnd
);
195 void UnsubclassWin();
197 WXFARPROC
MSWGetOldWndProc() const { return m_oldWndProc
; }
198 void MSWSetOldWndProc(WXFARPROC proc
) { m_oldWndProc
= proc
; }
200 // return true if the window is of a standard (i.e. not wxWidgets') class
202 // to understand why does it work, look at SubclassWin() code and comments
203 bool IsOfStandardClass() const { return m_oldWndProc
!= NULL
; }
205 wxWindow
*FindItem(long id
) const;
206 wxWindow
*FindItemByHWND(WXHWND hWnd
, bool controlOnly
= false) const;
208 // MSW only: true if this control is part of the main control
209 virtual bool ContainsHWND(WXHWND
WXUNUSED(hWnd
)) const { return false; }
212 // MSW only: true if this window or any of its children have a tooltip
213 virtual bool HasToolTips() const { return GetToolTip() != NULL
; }
214 #endif // wxUSE_TOOLTIPS
216 // translate wxWidgets style flags for this control into the Windows style
217 // and optional extended style for the corresponding native control
219 // this is the function that should be overridden in the derived classes,
220 // but you will mostly use MSWGetCreateWindowFlags() below
221 virtual WXDWORD
MSWGetStyle(long flags
, WXDWORD
*exstyle
= NULL
) const ;
223 // get the MSW window flags corresponding to wxWidgets ones
225 // the functions returns the flags (WS_XXX) directly and puts the ext
226 // (WS_EX_XXX) flags into the provided pointer if not NULL
227 WXDWORD
MSWGetCreateWindowFlags(WXDWORD
*exflags
= NULL
) const
228 { return MSWGetStyle(GetWindowStyle(), exflags
); }
230 // update the real underlying window style flags to correspond to the
231 // current wxWindow object style (safe to call even if window isn't fully
233 void MSWUpdateStyle(long flagsOld
, long exflagsOld
);
235 // translate wxWidgets coords into Windows ones suitable to be passed to
238 // returns true if non default coords are returned, false otherwise
239 bool MSWGetCreateWindowCoords(const wxPoint
& pos
,
242 int& w
, int& h
) const;
244 // get the HWND to be used as parent of this window with CreateWindow()
245 virtual WXHWND
MSWGetParent() const;
247 // get the Win32 window class name used by all wxWindow objects by default
248 static const wxChar
*MSWGetRegisteredClassName();
250 // creates the window of specified Windows class with given style, extended
251 // style, title and geometry (default values
253 // returns true if the window has been created, false if creation failed
254 bool MSWCreate(const wxChar
*wclass
,
255 const wxChar
*title
= NULL
,
256 const wxPoint
& pos
= wxDefaultPosition
,
257 const wxSize
& size
= wxDefaultSize
,
259 WXDWORD exendedStyle
= 0);
261 virtual bool MSWCommand(WXUINT param
, WXWORD id
);
263 #ifndef __WXUNIVERSAL__
264 // Create an appropriate wxWindow from a HWND
265 virtual wxWindow
* CreateWindowFromHWND(wxWindow
* parent
, WXHWND hWnd
);
267 // Make sure the window style reflects the HWND style (roughly)
268 virtual void AdoptAttributesFromHWND();
269 #endif // __WXUNIVERSAL__
271 // Setup background and foreground colours correctly
272 virtual void SetupColours();
274 // ------------------------------------------------------------------------
275 // helpers for message handlers: these perform the same function as the
276 // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
277 // the correct parameters
278 // ------------------------------------------------------------------------
280 void UnpackCommand(WXWPARAM wParam
, WXLPARAM lParam
,
281 WXWORD
*id
, WXHWND
*hwnd
, WXWORD
*cmd
);
282 void UnpackActivate(WXWPARAM wParam
, WXLPARAM lParam
,
283 WXWORD
*state
, WXWORD
*minimized
, WXHWND
*hwnd
);
284 void UnpackScroll(WXWPARAM wParam
, WXLPARAM lParam
,
285 WXWORD
*code
, WXWORD
*pos
, WXHWND
*hwnd
);
286 void UnpackCtlColor(WXWPARAM wParam
, WXLPARAM lParam
,
287 WXHDC
*hdc
, WXHWND
*hwnd
);
288 void UnpackMenuSelect(WXWPARAM wParam
, WXLPARAM lParam
,
289 WXWORD
*item
, WXWORD
*flags
, WXHMENU
*hmenu
);
291 // ------------------------------------------------------------------------
292 // internal handlers for MSW messages: all handlers return a boolean value:
293 // true means that the handler processed the event and false that it didn't
294 // ------------------------------------------------------------------------
296 // there are several cases where we have virtual functions for Windows
297 // message processing: this is because these messages often require to be
298 // processed in a different manner in the derived classes. For all other
299 // messages, however, we do *not* have corresponding MSWOnXXX() function
300 // and if the derived class wants to process them, it should override
301 // MSWWindowProc() directly.
303 // scroll event (both horizontal and vertical)
304 virtual bool MSWOnScroll(int orientation
, WXWORD nSBCode
,
305 WXWORD pos
, WXHWND control
);
307 // child control notifications
308 virtual bool MSWOnNotify(int idCtrl
, WXLPARAM lParam
, WXLPARAM
*result
);
310 // owner-drawn controls need to process these messages
311 virtual bool MSWOnDrawItem(int id
, WXDRAWITEMSTRUCT
*item
);
312 virtual bool MSWOnMeasureItem(int id
, WXMEASUREITEMSTRUCT
*item
);
314 // the rest are not virtual
315 bool HandleCreate(WXLPCREATESTRUCT cs
, bool *mayCreate
);
316 bool HandleInitDialog(WXHWND hWndFocus
);
317 bool HandleDestroy();
320 bool HandlePrintClient(WXHDC hDC
);
321 bool HandleEraseBkgnd(WXHDC hDC
);
323 bool HandleMinimize();
324 bool HandleMaximize();
325 bool HandleSize(int x
, int y
, WXUINT flag
);
326 bool HandleSizing(wxRect
& rect
);
327 bool HandleGetMinMaxInfo(void *mmInfo
);
328 bool HandleEnterSizeMove();
329 bool HandleExitSizeMove();
331 bool HandleShow(bool show
, int status
);
332 bool HandleActivate(int flag
, bool minimized
, WXHWND activate
);
334 bool HandleCommand(WXWORD id
, WXWORD cmd
, WXHWND control
);
336 bool HandleCtlColor(WXHBRUSH
*hBrush
, WXHDC hdc
, WXHWND hWnd
);
338 bool HandlePaletteChanged(WXHWND hWndPalChange
);
339 bool HandleQueryNewPalette();
340 bool HandleSysColorChange();
341 bool HandleDisplayChange();
342 bool HandleCaptureChanged(WXHWND gainedCapture
);
343 virtual bool HandleSettingChange(WXWPARAM wParam
, WXLPARAM lParam
);
345 bool HandleQueryEndSession(long logOff
, bool *mayEnd
);
346 bool HandleEndSession(bool endSession
, long logOff
);
348 bool HandleSetFocus(WXHWND wnd
);
349 bool HandleKillFocus(WXHWND wnd
);
351 bool HandleDropFiles(WXWPARAM wParam
);
353 bool HandleMouseEvent(WXUINT msg
, int x
, int y
, WXUINT flags
);
354 bool HandleMouseMove(int x
, int y
, WXUINT flags
);
355 bool HandleMouseWheel(WXWPARAM wParam
, WXLPARAM lParam
);
357 bool HandleChar(WXWPARAM wParam
, WXLPARAM lParam
, bool isASCII
= false);
358 bool HandleKeyDown(WXWPARAM wParam
, WXLPARAM lParam
);
359 bool HandleKeyUp(WXWPARAM wParam
, WXLPARAM lParam
);
361 bool HandleHotKey(WXWPARAM wParam
, WXLPARAM lParam
);
364 int HandleMenuChar(int chAccel
, WXLPARAM lParam
);
366 // Create and process a clipboard event specified by type.
367 bool HandleClipboardEvent( WXUINT nMsg
);
369 bool HandleQueryDragIcon(WXHICON
*hIcon
);
371 bool HandleSetCursor(WXHWND hWnd
, short nHitTest
, int mouseMsg
);
373 bool HandlePower(WXWPARAM wParam
, WXLPARAM lParam
, bool *vetoed
);
377 virtual WXLRESULT
MSWWindowProc(WXUINT nMsg
, WXWPARAM wParam
, WXLPARAM lParam
);
379 // Calls an appropriate default window procedure
380 virtual WXLRESULT
MSWDefWindowProc(WXUINT nMsg
, WXWPARAM wParam
, WXLPARAM lParam
);
382 // message processing helpers
384 // return false if the message shouldn't be translated/preprocessed but
385 // dispatched normally
386 virtual bool MSWShouldPreProcessMessage(WXMSG
* pMsg
);
388 // return true if the message was preprocessed and shouldn't be dispatched
389 virtual bool MSWProcessMessage(WXMSG
* pMsg
);
391 // return true if the message was translated and shouldn't be dispatched
392 virtual bool MSWTranslateMessage(WXMSG
* pMsg
);
394 // called when the window is about to be destroyed
395 virtual void MSWDestroyWindow();
398 // this function should return the brush to paint the children controls
399 // background or 0 if this window doesn't impose any particular background
402 // the base class version returns a solid brush if we have a non default
403 // background colour or 0 otherwise
404 virtual WXHBRUSH
MSWGetBgBrushForChild(WXHDC hDC
, WXHWND hWnd
);
406 // return the background brush to use for painting the given window by
407 // quering the parent windows via their MSWGetBgBrushForChild() recursively
409 // hWndToPaint is normally NULL meaning this window itself, but it can also
410 // be a child of this window which is used by the static box and could be
411 // potentially useful for other transparent controls
412 WXHBRUSH
MSWGetBgBrush(WXHDC hDC
, WXHWND hWndToPaint
= NULL
);
414 // gives the parent the possibility to draw its children background, e.g.
415 // this is used by wxNotebook to do it using DrawThemeBackground()
417 // return true if background was drawn, false otherwise
418 virtual bool MSWPrintChild(WXHDC
WXUNUSED(hDC
), wxWindow
* WXUNUSED(child
))
423 // some controls (e.g. wxListBox) need to set the return value themselves
425 // return true to let parent handle it if we don't, false otherwise
426 virtual bool MSWShouldPropagatePrintChild()
431 // common part of Show/HideWithEffect()
432 bool MSWShowWithEffect(bool show
,
436 // Responds to colour changes: passes event on to children.
437 void OnSysColourChanged(wxSysColourChangedEvent
& event
);
439 // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
440 void InitMouseEvent(wxMouseEvent
& event
, int x
, int y
, WXUINT flags
);
442 // check if mouse is in the window
443 bool IsMouseInWindow() const;
445 // check if a native double-buffering applies for this window
446 virtual bool IsDoubleBuffered() const;
448 void SetDoubleBuffered(bool on
);
450 // synthesize a wxEVT_LEAVE_WINDOW event and set m_mouseInWindow to false
451 void GenerateMouseLeave();
453 // virtual function for implementing internal idle
455 virtual void OnInternalIdle();
458 // this allows you to implement standard control borders without
459 // repeating the code in different classes that are not derived from
461 virtual wxBorder
GetDefaultBorderForControl() const;
463 // choose the default border for this window
464 virtual wxBorder
GetDefaultBorder() const;
466 // Translate wxBORDER_THEME (and other border styles if necessary to the value
467 // that makes most sense for this Windows environment
468 virtual wxBorder
TranslateBorder(wxBorder border
) const;
470 #if wxUSE_MENUS_NATIVE
471 virtual bool DoPopupMenu( wxMenu
*menu
, int x
, int y
);
472 #endif // wxUSE_MENUS_NATIVE
477 // the old window proc (we subclass all windows)
478 WXFARPROC m_oldWndProc
;
480 // additional (MSW specific) flags
481 bool m_mouseInWindow
:1;
482 bool m_lastKeydownProcessed
:1;
484 // the size of one page for scrolling
488 // implement the base class pure virtuals
489 virtual void DoGetTextExtent(const wxString
& string
,
492 int *externalLeading
= NULL
,
493 const wxFont
*font
= NULL
) const;
494 virtual void DoClientToScreen( int *x
, int *y
) const;
495 virtual void DoScreenToClient( int *x
, int *y
) const;
496 virtual void DoGetPosition( int *x
, int *y
) const;
497 virtual void DoGetSize( int *width
, int *height
) const;
498 virtual void DoGetClientSize( int *width
, int *height
) const;
499 virtual void DoSetSize(int x
, int y
,
500 int width
, int height
,
501 int sizeFlags
= wxSIZE_AUTO
);
502 virtual void DoSetClientSize(int width
, int height
);
504 virtual wxSize
DoGetBorderSize() const;
506 virtual void DoCaptureMouse();
507 virtual void DoReleaseMouse();
509 virtual void DoEnable(bool enable
);
511 virtual void DoFreeze();
512 virtual void DoThaw();
514 // this simply moves/resizes the given HWND which is supposed to be our
515 // sibling (this is useful for controls which are composite at MSW level
516 // and for which DoMoveWindow() is not enough)
518 // returns true if the window move was deferred, false if it was moved
519 // immediately (no error return)
520 bool DoMoveSibling(WXHWND hwnd
, int x
, int y
, int width
, int height
);
522 // move the window to the specified location and resize it: this is called
523 // from both DoSetSize() and DoSetClientSize() and would usually just call
524 // ::MoveWindow() except for composite controls which will want to arrange
525 // themselves inside the given rectangle
526 virtual void DoMoveWindow(int x
, int y
, int width
, int height
);
529 virtual void DoSetToolTip( wxToolTip
*tip
);
531 // process TTN_NEEDTEXT message properly (i.e. fixing the bugs in
532 // comctl32.dll in our code -- see the function body for more info)
533 bool HandleTooltipNotify(WXUINT code
,
535 const wxString
& ttip
);
536 #endif // wxUSE_TOOLTIPS
538 // the helper functions used by HandleChar/KeyXXX methods
539 wxKeyEvent
CreateKeyEvent(wxEventType evType
, int id
,
540 WXLPARAM lParam
= 0, WXWPARAM wParam
= 0) const;
543 // default OnEraseBackground() implementation, return true if we did erase
544 // the background, false otherwise (i.e. the system should erase it)
545 bool DoEraseBackground(WXHDC hDC
);
547 // generate WM_CHANGEUISTATE if it's needed for the OS we're running under
549 // action should be one of the UIS_XXX constants
550 // state should be one or more of the UISF_XXX constants
551 // if action == UIS_INITIALIZE then it doesn't seem to matter what we use
552 // for state as the system will decide for us what needs to be set
553 void MSWUpdateUIState(int action
, int state
= 0);
556 // common part of all ctors
559 // the (non-virtual) handlers for the events
560 bool HandleMove(int x
, int y
);
561 bool HandleMoving(wxRect
& rect
);
562 bool HandleJoystickEvent(WXUINT msg
, int x
, int y
, WXUINT flags
);
563 bool HandleNotify(int idCtrl
, WXLPARAM lParam
, WXLPARAM
*result
);
565 #if wxUSE_DEFERRED_SIZING
567 // this function is called after the window was resized to its new size
568 virtual void MSWEndDeferWindowPos()
570 m_pendingPosition
= wxDefaultPosition
;
571 m_pendingSize
= wxDefaultSize
;
574 // current defer window position operation handle (may be NULL)
577 // When deferred positioning is done these hold the pending changes, and
578 // are used for the default values if another size/pos changes is done on
579 // this window before the group of deferred changes is completed.
580 wxPoint m_pendingPosition
;
581 wxSize m_pendingSize
;
582 #endif // wxUSE_DEFERRED_SIZING
586 bool m_contextMenuEnabled
;
589 DECLARE_DYNAMIC_CLASS(wxWindowMSW
)
590 wxDECLARE_NO_COPY_CLASS(wxWindowMSW
);
591 DECLARE_EVENT_TABLE()
594 // ----------------------------------------------------------------------------
596 // ----------------------------------------------------------------------------
598 // ---------------------------------------------------------------------------
600 // ---------------------------------------------------------------------------
602 // kbd code translation
603 WXDLLIMPEXP_CORE
int wxCharCodeMSWToWX(int keySym
, WXLPARAM lParam
= 0);
604 WXDLLIMPEXP_CORE WXWORD
wxCharCodeWXToMSW(int id
, bool *IsVirtual
= NULL
);
606 // window creation helper class: before creating a new HWND, instantiate an
607 // object of this class on stack - this allows to process the messages sent to
608 // the window even before CreateWindow() returns
609 class wxWindowCreationHook
612 wxWindowCreationHook(wxWindowMSW
*winBeingCreated
);
613 ~wxWindowCreationHook();
616 #endif // _WX_WINDOW_H_