include/wx/msw/window.h

   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(), ...
   7 // Created:     01/02/97
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) Julian Smart
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_WINDOW_H_
  14 #define _WX_WINDOW_H_
  15
  16 // ---------------------------------------------------------------------------
  17 // constants
  18 // ---------------------------------------------------------------------------
  19
  20 #if WXWIN_COMPATIBILITY_2_4
  21 // they're unused by wxWidgets...
  22 enum
  23 {
  24     wxKEY_SHIFT = 1,
  25     wxKEY_CTRL  = 2
  26 };
  27 #endif
  28
  29 // ---------------------------------------------------------------------------
  30 // wxWindow declaration for MSW
  31 // ---------------------------------------------------------------------------
  32
  33 class WXDLLEXPORT wxWindowMSW : public wxWindowBase
  34 {
  35     friend class wxSpinCtrl;
  36     friend class wxSlider;
  37     friend class wxRadioBox;
  38 #if defined __VISUALC__ && __VISUALC__ <= 1200
  39     friend class wxWindowMSW;
  40 #endif
  41 public:
  42     wxWindowMSW() { Init(); }
  43
  44     wxWindowMSW(wxWindow *parent,
  45                 wxWindowID id,
  46                 const wxPoint& pos = wxDefaultPosition,
  47                 const wxSize& size = wxDefaultSize,
  48                 long style = 0,
  49                 const wxString& name = wxPanelNameStr)
  50     {
  51         Init();
  52         Create(parent, id, pos, size, style, name);
  53     }
  54
  55     virtual ~wxWindowMSW();
  56
  57     bool Create(wxWindow *parent,
  58                 wxWindowID id,
  59                 const wxPoint& pos = wxDefaultPosition,
  60                 const wxSize& size = wxDefaultSize,
  61                 long style = 0,
  62                 const wxString& name = wxPanelNameStr);
  63
  64     // implement base class pure virtuals
  65     virtual void SetLabel(const wxString& label);
  66     virtual wxString GetLabel() const;
  67
  68     virtual void Raise();
  69     virtual void Lower();
  70
  71     virtual bool Show( bool show = true );
  72     virtual bool Enable( bool enable = true );
  73
  74     virtual void SetFocus();
  75     virtual void SetFocusFromKbd();
  76
  77     virtual bool Reparent(wxWindowBase *newParent);
  78
  79     virtual void WarpPointer(int x, int y);
  80
  81     virtual void Refresh( bool eraseBackground = true,
  82                           const wxRect *rect = (const wxRect *) NULL );
  83     virtual void Update();
  84     virtual void Freeze();
  85     virtual void Thaw();
  86
  87     virtual void SetWindowStyleFlag( long style );
  88     virtual bool SetCursor( const wxCursor &cursor );
  89     virtual bool SetFont( const wxFont &font );
  90
  91     virtual int GetCharHeight() const;
  92     virtual int GetCharWidth() const;
  93     virtual void GetTextExtent(const wxString& string,
  94                                int *x, int *y,
  95                                int *descent = (int *) NULL,
  96                                int *externalLeading = (int *) NULL,
  97                                const wxFont *theFont = (const wxFont *) NULL)
  98                                const;
  99
 100     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 101                                int range, bool refresh = true );
 102     virtual void SetScrollPos( int orient, int pos, bool refresh = true );
 103     virtual int GetScrollPos( int orient ) const;
 104     virtual int GetScrollThumb( int orient ) const;
 105     virtual int GetScrollRange( int orient ) const;
 106     virtual void ScrollWindow( int dx, int dy,
 107                                const wxRect* rect = (wxRect *) NULL );
 108
 109     virtual bool ScrollLines(int lines);
 110     virtual bool ScrollPages(int pages);
 111
 112 #if wxUSE_DRAG_AND_DROP
 113     virtual void SetDropTarget( wxDropTarget *dropTarget );
 114 #endif // wxUSE_DRAG_AND_DROP
 115
 116     // Accept files for dragging
 117     virtual void DragAcceptFiles(bool accept);
 118
 119 #if WXWIN_COMPATIBILITY_2_4
 120     wxDEPRECATED( bool GetUseCtl3D() const );
 121     wxDEPRECATED( bool GetTransparentBackground() const );
 122     wxDEPRECATED( void SetTransparent(bool t = true) );
 123 #endif // WXWIN_COMPATIBILITY_2_4
 124
 125 #ifndef __WXUNIVERSAL__
 126     // Native resource loading (implemented in src/msw/nativdlg.cpp)
 127     // FIXME: should they really be all virtual?
 128     virtual bool LoadNativeDialog(wxWindow* parent, wxWindowID& id);
 129     virtual bool LoadNativeDialog(wxWindow* parent, const wxString& name);
 130     wxWindow* GetWindowChild1(wxWindowID id);
 131     wxWindow* GetWindowChild(wxWindowID id);
 132 #endif // __WXUNIVERSAL__
 133
 134 #if wxUSE_HOTKEY
 135     // install and deinstall a system wide hotkey
 136     virtual bool RegisterHotKey(int hotkeyId, int modifiers, int keycode);
 137     virtual bool UnregisterHotKey(int hotkeyId);
 138 #endif // wxUSE_HOTKEY
 139
 140 #ifdef __POCKETPC__
 141     bool IsContextMenuEnabled() const { return m_contextMenuEnabled; }
 142     void EnableContextMenu(bool enable = true) { m_contextMenuEnabled = enable; }
 143 #endif
 144
 145     // window handle stuff
 146     // -------------------
 147
 148     WXHWND GetHWND() const { return m_hWnd; }
 149     void SetHWND(WXHWND hWnd) { m_hWnd = hWnd; }
 150     virtual WXWidget GetHandle() const { return GetHWND(); }
 151
 152     void AssociateHandle(WXWidget handle);
 153     void DissociateHandle();
 154
 155     // does this window have deferred position and/or size?
 156     bool IsSizeDeferred() const;
 157
 158
 159     // implementation from now on
 160     // ==========================
 161
 162     // event handlers
 163     // --------------
 164
 165     void OnPaint(wxPaintEvent& event);
 166     void OnEraseBackground(wxEraseEvent& event);
 167 #ifdef __WXWINCE__
 168     void OnInitDialog(wxInitDialogEvent& event);
 169 #endif
 170
 171 public:
 172     // Windows subclassing
 173     void SubclassWin(WXHWND hWnd);
 174     void UnsubclassWin();
 175
 176     WXFARPROC MSWGetOldWndProc() const { return m_oldWndProc; }
 177     void MSWSetOldWndProc(WXFARPROC proc) { m_oldWndProc = proc; }
 178
 179     // return true if the window is of a standard (i.e. not wxWidgets') class
 180     //
 181     // to understand why does it work, look at SubclassWin() code and comments
 182     bool IsOfStandardClass() const { return m_oldWndProc != NULL; }
 183
 184     wxWindow *FindItem(long id) const;
 185     wxWindow *FindItemByHWND(WXHWND hWnd, bool controlOnly = false) const;
 186
 187     // MSW only: true if this control is part of the main control
 188     virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return false; };
 189
 190 #if wxUSE_TOOLTIPS
 191     // MSW only: true if this window or any of its children have a tooltip
 192     virtual bool HasToolTips() const { return GetToolTip() != NULL; }
 193 #endif // wxUSE_TOOLTIPS
 194
 195     // translate wxWidgets style flags for this control into the Windows style
 196     // and optional extended style for the corresponding native control
 197     //
 198     // this is the function that should be overridden in the derived classes,
 199     // but you will mostly use MSWGetCreateWindowFlags() below
 200     virtual WXDWORD MSWGetStyle(long flags, WXDWORD *exstyle = NULL) const ;
 201
 202     // get the MSW window flags corresponding to wxWidgets ones
 203     //
 204     // the functions returns the flags (WS_XXX) directly and puts the ext
 205     // (WS_EX_XXX) flags into the provided pointer if not NULL
 206     WXDWORD MSWGetCreateWindowFlags(WXDWORD *exflags = NULL) const
 207         { return MSWGetStyle(GetWindowStyle(), exflags); }
 208
 209     // translate wxWidgets coords into Windows ones suitable to be passed to
 210     // ::CreateWindow()
 211     //
 212     // returns true if non default coords are returned, false otherwise
 213     bool MSWGetCreateWindowCoords(const wxPoint& pos,
 214                                   const wxSize& size,
 215                                   int& x, int& y,
 216                                   int& w, int& h) const;
 217
 218     // get the HWND to be used as parent of this window with CreateWindow()
 219     virtual WXHWND MSWGetParent() const;
 220
 221     // creates the window of specified Windows class with given style, extended
 222     // style, title and geometry (default values
 223     //
 224     // returns true if the window has been created, false if creation failed
 225     bool MSWCreate(const wxChar *wclass,
 226                    const wxChar *title = NULL,
 227                    const wxPoint& pos = wxDefaultPosition,
 228                    const wxSize& size = wxDefaultSize,
 229                    WXDWORD style = 0,
 230                    WXDWORD exendedStyle = 0);
 231
 232     virtual bool MSWCommand(WXUINT param, WXWORD id);
 233
 234 #ifndef __WXUNIVERSAL__
 235     // Create an appropriate wxWindow from a HWND
 236     virtual wxWindow* CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd);
 237
 238     // Make sure the window style reflects the HWND style (roughly)
 239     virtual void AdoptAttributesFromHWND();
 240 #endif // __WXUNIVERSAL__
 241
 242     // Setup background and foreground colours correctly
 243     virtual void SetupColours();
 244
 245     // ------------------------------------------------------------------------
 246     // helpers for message handlers: these perform the same function as the
 247     // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
 248     // the correct parameters
 249     // ------------------------------------------------------------------------
 250
 251     void UnpackCommand(WXWPARAM wParam, WXLPARAM lParam,
 252                        WXWORD *id, WXHWND *hwnd, WXWORD *cmd);
 253     void UnpackActivate(WXWPARAM wParam, WXLPARAM lParam,
 254                         WXWORD *state, WXWORD *minimized, WXHWND *hwnd);
 255     void UnpackScroll(WXWPARAM wParam, WXLPARAM lParam,
 256                       WXWORD *code, WXWORD *pos, WXHWND *hwnd);
 257     void UnpackCtlColor(WXWPARAM wParam, WXLPARAM lParam,
 258                         WXHDC *hdc, WXHWND *hwnd);
 259     void UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 260                           WXWORD *item, WXWORD *flags, WXHMENU *hmenu);
 261
 262     // ------------------------------------------------------------------------
 263     // internal handlers for MSW messages: all handlers return a boolean value:
 264     // true means that the handler processed the event and false that it didn't
 265     // ------------------------------------------------------------------------
 266
 267     // there are several cases where we have virtual functions for Windows
 268     // message processing: this is because these messages often require to be
 269     // processed in a different manner in the derived classes. For all other
 270     // messages, however, we do *not* have corresponding MSWOnXXX() function
 271     // and if the derived class wants to process them, it should override
 272     // MSWWindowProc() directly.
 273
 274     // scroll event (both horizontal and vertical)
 275     virtual bool MSWOnScroll(int orientation, WXWORD nSBCode,
 276                              WXWORD pos, WXHWND control);
 277
 278     // child control notifications
 279     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 280
 281     // owner-drawn controls need to process these messages
 282     virtual bool MSWOnDrawItem(int id, WXDRAWITEMSTRUCT *item);
 283     virtual bool MSWOnMeasureItem(int id, WXMEASUREITEMSTRUCT *item);
 284
 285     // the rest are not virtual
 286     bool HandleCreate(WXLPCREATESTRUCT cs, bool *mayCreate);
 287     bool HandleInitDialog(WXHWND hWndFocus);
 288     bool HandleDestroy();
 289
 290     bool HandlePaint();
 291     bool HandlePrintClient(WXHDC hDC);
 292     bool HandleEraseBkgnd(WXHDC hDC);
 293
 294     bool HandleMinimize();
 295     bool HandleMaximize();
 296     bool HandleSize(int x, int y, WXUINT flag);
 297     bool HandleSizing(wxRect& rect);
 298     bool HandleGetMinMaxInfo(void *mmInfo);
 299
 300     bool HandleShow(bool show, int status);
 301     bool HandleActivate(int flag, bool minimized, WXHWND activate);
 302
 303     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
 304
 305     bool HandleCtlColor(WXHBRUSH *hBrush, WXHDC hdc, WXHWND hWnd);
 306
 307     bool HandlePaletteChanged(WXHWND hWndPalChange);
 308     bool HandleQueryNewPalette();
 309     bool HandleSysColorChange();
 310     bool HandleDisplayChange();
 311     bool HandleCaptureChanged(WXHWND gainedCapture);
 312     virtual bool HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam);
 313
 314     bool HandleQueryEndSession(long logOff, bool *mayEnd);
 315     bool HandleEndSession(bool endSession, long logOff);
 316
 317     bool HandleSetFocus(WXHWND wnd);
 318     bool HandleKillFocus(WXHWND wnd);
 319
 320     bool HandleDropFiles(WXWPARAM wParam);
 321
 322     bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
 323     bool HandleMouseMove(int x, int y, WXUINT flags);
 324     bool HandleMouseWheel(WXWPARAM wParam, WXLPARAM lParam);
 325
 326     bool HandleChar(WXWPARAM wParam, WXLPARAM lParam, bool isASCII = false);
 327     bool HandleKeyDown(WXWPARAM wParam, WXLPARAM lParam);
 328     bool HandleKeyUp(WXWPARAM wParam, WXLPARAM lParam);
 329 #if wxUSE_ACCEL
 330     bool HandleHotKey(WXWPARAM wParam, WXLPARAM lParam);
 331 #endif
 332 #ifdef __WIN32__
 333     int HandleMenuChar(int chAccel, WXLPARAM lParam);
 334 #endif
 335     // Create and process a clipboard event specified by type.
 336     bool HandleClipboardEvent( WXUINT nMsg );
 337
 338     bool HandleQueryDragIcon(WXHICON *hIcon);
 339
 340     bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);
 341
 342     // Window procedure
 343     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 344
 345     // Calls an appropriate default window procedure
 346     virtual WXLRESULT MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 347
 348     // message processing helpers
 349
 350     // return false if the message shouldn't be translated/preprocessed but
 351     // dispatched normally
 352     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 353
 354     // return true if the message was preprocessed and shouldn't be dispatched
 355     virtual bool MSWProcessMessage(WXMSG* pMsg);
 356
 357     // return true if the message was translated and shouldn't be dispatched
 358     virtual bool MSWTranslateMessage(WXMSG* pMsg);
 359
 360     // called when the window is about to be destroyed
 361     virtual void MSWDestroyWindow();
 362
 363
 364     // this function should return the brush to paint the children controls
 365     // background or 0 if this window doesn't impose any particular background
 366     // on its children
 367     //
 368     // the base class version returns a solid brush if we have a non default
 369     // background colour or 0 otherwise
 370     virtual WXHBRUSH MSWGetBgBrushForChild(WXHDC hDC, WXHWND hWnd);
 371
 372     // return the background brush to use for painting the given window by
 373     // quering the parent windows via their MSWGetBgBrushForChild() recursively
 374     //
 375     // hWndToPaint is normally NULL meaning this window itself, but it can also
 376     // be a child of this window which is used by the static box and could be
 377     // potentially useful for other transparent controls
 378     WXHBRUSH MSWGetBgBrush(WXHDC hDC, WXHWND hWndToPaint = NULL);
 379
 380     // gives the parent the possibility to draw its children background, e.g.
 381     // this is used by wxNotebook to do it using DrawThemeBackground()
 382     //
 383     // return true if background was drawn, false otherwise
 384     virtual bool MSWPrintChild(WXHDC WXUNUSED(hDC), wxWindow * WXUNUSED(child))
 385     {
 386         return false;
 387     }
 388
 389     // some controls (e.g. wxListBox) need to set the return value themselves
 390     //
 391     // return true to let parent handle it if we don't, false otherwise
 392     virtual bool MSWShouldPropagatePrintChild()
 393     {
 394         return true;
 395     }
 396
 397
 398     // Responds to colour changes: passes event on to children.
 399     void OnSysColourChanged(wxSysColourChangedEvent& event);
 400
 401     // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
 402     void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);
 403
 404     // check if mouse is in the window
 405     bool IsMouseInWindow() const;
 406
 407     // synthesize a wxEVT_LEAVE_WINDOW event and set m_mouseInWindow to false
 408     void GenerateMouseLeave();
 409
 410     // virtual function for implementing internal idle
 411     // behaviour
 412     virtual void OnInternalIdle();
 413
 414 protected:
 415
 416 #if wxUSE_MENUS_NATIVE
 417     virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
 418 #endif // wxUSE_MENUS_NATIVE
 419
 420     // the window handle
 421     WXHWND                m_hWnd;
 422
 423     // the old window proc (we subclass all windows)
 424     WXFARPROC             m_oldWndProc;
 425
 426     // additional (MSW specific) flags
 427     bool                  m_mouseInWindow:1;
 428     bool                  m_lastKeydownProcessed:1;
 429
 430     // the size of one page for scrolling
 431     int                   m_xThumbSize;
 432     int                   m_yThumbSize;
 433
 434     // implement the base class pure virtuals
 435     virtual void DoClientToScreen( int *x, int *y ) const;
 436     virtual void DoScreenToClient( int *x, int *y ) const;
 437     virtual void DoGetPosition( int *x, int *y ) const;
 438     virtual void DoGetSize( int *width, int *height ) const;
 439     virtual void DoGetClientSize( int *width, int *height ) const;
 440     virtual void DoSetSize(int x, int y,
 441                            int width, int height,
 442                            int sizeFlags = wxSIZE_AUTO);
 443     virtual void DoSetClientSize(int width, int height);
 444
 445     virtual void DoCaptureMouse();
 446     virtual void DoReleaseMouse();
 447
 448     // has the window been frozen by Freeze()?
 449     bool IsFrozen() const { return m_frozenness > 0; }
 450
 451     // this simply moves/resizes the given HWND which is supposed to be our
 452     // sibling (this is useful for controls which are composite at MSW level
 453     // and for which DoMoveWindow() is not enough)
 454     //
 455     // returns true if the window move was deferred, false if it was moved
 456     // immediately (no error return)
 457     bool DoMoveSibling(WXHWND hwnd, int x, int y, int width, int height);
 458
 459     // move the window to the specified location and resize it: this is called
 460     // from both DoSetSize() and DoSetClientSize() and would usually just call
 461     // ::MoveWindow() except for composite controls which will want to arrange
 462     // themselves inside the given rectangle
 463     virtual void DoMoveWindow(int x, int y, int width, int height);
 464
 465 #if wxUSE_TOOLTIPS
 466     virtual void DoSetToolTip( wxToolTip *tip );
 467
 468     // process TTN_NEEDTEXT message properly (i.e. fixing the bugs in
 469     // comctl32.dll in our code -- see the function body for more info)
 470     bool HandleTooltipNotify(WXUINT code,
 471                              WXLPARAM lParam,
 472                              const wxString& ttip);
 473 #endif // wxUSE_TOOLTIPS
 474
 475     // the helper functions used by HandleChar/KeyXXX methods
 476     wxKeyEvent CreateKeyEvent(wxEventType evType, int id,
 477                               WXLPARAM lParam = 0, WXWPARAM wParam = 0) const;
 478
 479
 480     // default OnEraseBackground() implementation, return true if we did erase
 481     // the background, false otherwise (i.e. the system should erase it)
 482     bool DoEraseBackground(WXHDC hDC);
 483
 484     // generate WM_CHANGEUISTATE if it's needed for the OS we're running under
 485     //
 486     // action should be one of the UIS_XXX constants
 487     // state should be one or more of the UISF_XXX constants
 488     // if action == UIS_INITIALIZE then it doesn't seem to matter what we use
 489     // for state as the system will decide for us what needs to be set
 490     void MSWUpdateUIState(int action, int state = 0);
 491
 492 private:
 493     // common part of all ctors
 494     void Init();
 495
 496     // the (non-virtual) handlers for the events
 497     bool HandleMove(int x, int y);
 498     bool HandleMoving(wxRect& rect);
 499     bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
 500     bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 501
 502     // list of disabled children before last call to our Disable()
 503     wxWindowList *m_childrenDisabled;
 504
 505     // number of calls to Freeze() minus number of calls to Thaw()
 506     unsigned int m_frozenness;
 507
 508     // current defer window position operation handle (may be NULL)
 509     WXHANDLE m_hDWP;
 510
 511     // When deferred positioning is done these hold the pending changes, and
 512     // are used for the default values if another size/pos changes is done on
 513     // this window before the group of deferred changes is completed.
 514     wxPoint     m_pendingPosition;
 515     wxSize      m_pendingSize;
 516
 517 #ifdef __POCKETPC__
 518     bool        m_contextMenuEnabled;
 519 #endif
 520
 521     DECLARE_DYNAMIC_CLASS(wxWindowMSW)
 522     DECLARE_NO_COPY_CLASS(wxWindowMSW)
 523     DECLARE_EVENT_TABLE()
 524 };
 525
 526 // ----------------------------------------------------------------------------
 527 // inline functions
 528 // ----------------------------------------------------------------------------
 529
 530 #if WXWIN_COMPATIBILITY_2_4
 531
 532 inline bool wxWindowMSW::GetUseCtl3D() const { return false; }
 533 inline bool wxWindowMSW::GetTransparentBackground() const { return false; }
 534 inline void wxWindowMSW::SetTransparent(bool WXUNUSED(t)) { }
 535
 536 #endif // WXWIN_COMPATIBILITY_2_4
 537
 538 // ---------------------------------------------------------------------------
 539 // global functions
 540 // ---------------------------------------------------------------------------
 541
 542 // kbd code translation
 543 WXDLLEXPORT int wxCharCodeMSWToWX(int keySym, WXLPARAM lParam = 0);
 544 WXDLLEXPORT WXWORD wxCharCodeWXToMSW(int id, bool *IsVirtual);
 545
 546 // window creation helper class: before creating a new HWND, instantiate an
 547 // object of this class on stack - this allows to process the messages sent to
 548 // the window even before CreateWindow() returns
 549 class wxWindowCreationHook
 550 {
 551 public:
 552     wxWindowCreationHook(wxWindowMSW *winBeingCreated);
 553     ~wxWindowCreationHook();
 554 };
 555
 556 // ----------------------------------------------------------------------------
 557 // global objects
 558 // ----------------------------------------------------------------------------
 559
 560 // notice that this hash must be defined after wxWindow declaration as it
 561 // needs to "see" its dtor and not just forward declaration
 562 #include "wx/hash.h"
 563
 564 // pseudo-template HWND <-> wxWindow hash table
 565 #if WXWIN_COMPATIBILITY_2_4
 566 WX_DECLARE_HASH(wxWindow, wxWindowList, wxWinHashTable);
 567 #else
 568 WX_DECLARE_HASH(wxWindowMSW, wxWindowList, wxWinHashTable);
 569 #endif
 570
 571 extern wxWinHashTable *wxWinHandleHash;
 572
 573 #endif // _WX_WINDOW_H_