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 #include "wx/settings.h"        // solely for wxSystemColour
  17
  18 // if this is set to 1, we use deferred window sizing to reduce flicker when
  19 // resizing complicated window hierarchies, but this can in theory result in
  20 // different behaviour than the old code so we keep the possibility to use it
  21 // by setting this to 0 (in the future this should be removed completely)
  22 #ifdef __WXWINCE__
  23     #define wxUSE_DEFERRED_SIZING 0
  24 #else
  25     #define wxUSE_DEFERRED_SIZING 1
  26 #endif
  27
  28 // ---------------------------------------------------------------------------
  29 // wxWindow declaration for MSW
  30 // ---------------------------------------------------------------------------
  31
  32 class WXDLLIMPEXP_CORE wxWindowMSW : public wxWindowBase
  33 {
  34     friend class wxSpinCtrl;
  35     friend class wxSlider;
  36     friend class wxRadioBox;
  37 #if defined __VISUALC__ && __VISUALC__ <= 1200
  38     friend class wxWindowMSW;
  39 #endif
  40 public:
  41     wxWindowMSW() { Init(); }
  42
  43     wxWindowMSW(wxWindow *parent,
  44                 wxWindowID id,
  45                 const wxPoint& pos = wxDefaultPosition,
  46                 const wxSize& size = wxDefaultSize,
  47                 long style = 0,
  48                 const wxString& name = wxPanelNameStr)
  49     {
  50         Init();
  51         Create(parent, id, pos, size, style, name);
  52     }
  53
  54     virtual ~wxWindowMSW();
  55
  56     bool Create(wxWindow *parent,
  57                 wxWindowID id,
  58                 const wxPoint& pos = wxDefaultPosition,
  59                 const wxSize& size = wxDefaultSize,
  60                 long style = 0,
  61                 const wxString& name = wxPanelNameStr);
  62
  63     // implement base class pure virtuals
  64     virtual void SetLabel(const wxString& label);
  65     virtual wxString GetLabel() const;
  66
  67     virtual void Raise();
  68     virtual void Lower();
  69
  70     virtual bool BeginRepositioningChildren();
  71     virtual void EndRepositioningChildren();
  72
  73     virtual bool Show(bool show = true);
  74     virtual bool ShowWithEffect(wxShowEffect effect,
  75                                 unsigned timeout = 0)
  76     {
  77         return MSWShowWithEffect(true, effect, timeout);
  78     }
  79     virtual bool HideWithEffect(wxShowEffect effect,
  80                                 unsigned timeout = 0)
  81     {
  82         return MSWShowWithEffect(false, effect, timeout);
  83     }
  84
  85     virtual void SetFocus();
  86     virtual void SetFocusFromKbd();
  87
  88     virtual bool Reparent(wxWindowBase *newParent);
  89
  90     virtual void WarpPointer(int x, int y);
  91
  92     virtual void Refresh( bool eraseBackground = true,
  93                           const wxRect *rect = (const wxRect *) NULL );
  94     virtual void Update();
  95
  96     virtual void SetWindowStyleFlag(long style);
  97     virtual void SetExtraStyle(long exStyle);
  98     virtual bool SetCursor( const wxCursor &cursor );
  99     virtual bool SetFont( const wxFont &font );
 100
 101     virtual int GetCharHeight() const;
 102     virtual int GetCharWidth() const;
 103
 104     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 105                                int range, bool refresh = true );
 106     virtual void SetScrollPos( int orient, int pos, bool refresh = true );
 107     virtual int GetScrollPos( int orient ) const;
 108     virtual int GetScrollThumb( int orient ) const;
 109     virtual int GetScrollRange( int orient ) const;
 110     virtual void ScrollWindow( int dx, int dy,
 111                                const wxRect* rect = NULL );
 112
 113     virtual bool ScrollLines(int lines);
 114     virtual bool ScrollPages(int pages);
 115
 116     virtual void SetLayoutDirection(wxLayoutDirection dir);
 117     virtual wxLayoutDirection GetLayoutDirection() const;
 118     virtual wxCoord AdjustForLayoutDirection(wxCoord x,
 119                                              wxCoord width,
 120                                              wxCoord widthTotal) const;
 121
 122 #if wxUSE_DRAG_AND_DROP
 123     virtual void SetDropTarget( wxDropTarget *dropTarget );
 124 #endif // wxUSE_DRAG_AND_DROP
 125
 126     // Accept files for dragging
 127     virtual void DragAcceptFiles(bool accept);
 128
 129 #ifndef __WXUNIVERSAL__
 130     // Native resource loading (implemented in src/msw/nativdlg.cpp)
 131     // FIXME: should they really be all virtual?
 132     virtual bool LoadNativeDialog(wxWindow* parent, wxWindowID& id);
 133     virtual bool LoadNativeDialog(wxWindow* parent, const wxString& name);
 134     wxWindow* GetWindowChild1(wxWindowID id);
 135     wxWindow* GetWindowChild(wxWindowID id);
 136 #endif // __WXUNIVERSAL__
 137
 138 #if wxUSE_HOTKEY
 139     // install and deinstall a system wide hotkey
 140     virtual bool RegisterHotKey(int hotkeyId, int modifiers, int keycode);
 141     virtual bool UnregisterHotKey(int hotkeyId);
 142 #endif // wxUSE_HOTKEY
 143
 144 #ifdef __POCKETPC__
 145     bool IsContextMenuEnabled() const { return m_contextMenuEnabled; }
 146     void EnableContextMenu(bool enable = true) { m_contextMenuEnabled = enable; }
 147 #endif
 148
 149     // window handle stuff
 150     // -------------------
 151
 152     WXHWND GetHWND() const { return m_hWnd; }
 153     void SetHWND(WXHWND hWnd) { m_hWnd = hWnd; }
 154     virtual WXWidget GetHandle() const { return GetHWND(); }
 155
 156     void AssociateHandle(WXWidget handle);
 157     void DissociateHandle();
 158
 159     // does this window have deferred position and/or size?
 160     bool IsSizeDeferred() const;
 161
 162     // these functions allow to register a global handler for the given Windows
 163     // message: it will be called from MSWWindowProc() of any window which gets
 164     // this event if it's not processed before (i.e. unlike a hook procedure it
 165     // does not override the normal processing)
 166     //
 167     // notice that if you want to process a message for a given window only you
 168     // should override its MSWWindowProc() instead
 169
 170     // type of the handler: it is called with the message parameters (except
 171     // that the window object is passed instead of window handle) and should
 172     // return true if it handled the message or false if it should be passed to
 173     // DefWindowProc()
 174     typedef bool (*MSWMessageHandler)(wxWindowMSW *win,
 175                                       WXUINT nMsg,
 176                                       WXWPARAM wParam,
 177                                       WXLPARAM lParam);
 178
 179     // install a handler, shouldn't be called more than one for the same message
 180     static bool MSWRegisterMessageHandler(int msg, MSWMessageHandler handler);
 181
 182     // unregister a previously registered handler
 183     static void MSWUnregisterMessageHandler(int msg, MSWMessageHandler handler);
 184
 185
 186     // implementation from now on
 187     // ==========================
 188
 189     // event handlers
 190     // --------------
 191
 192     void OnPaint(wxPaintEvent& event);
 193 #ifdef __WXWINCE__
 194     void OnInitDialog(wxInitDialogEvent& event);
 195 #endif
 196
 197 public:
 198     // Windows subclassing
 199     void SubclassWin(WXHWND hWnd);
 200     void UnsubclassWin();
 201
 202     WXFARPROC MSWGetOldWndProc() const { return m_oldWndProc; }
 203     void MSWSetOldWndProc(WXFARPROC proc) { m_oldWndProc = proc; }
 204
 205     // return true if the window is of a standard (i.e. not wxWidgets') class
 206     //
 207     // to understand why does it work, look at SubclassWin() code and comments
 208     bool IsOfStandardClass() const { return m_oldWndProc != NULL; }
 209
 210     wxWindow *FindItem(long id) const;
 211     wxWindow *FindItemByHWND(WXHWND hWnd, bool controlOnly = false) const;
 212
 213     // MSW only: true if this control is part of the main control
 214     virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return false; }
 215
 216 #if wxUSE_TOOLTIPS
 217     // MSW only: true if this window or any of its children have a tooltip
 218     virtual bool HasToolTips() const { return GetToolTip() != NULL; }
 219 #endif // wxUSE_TOOLTIPS
 220
 221     // translate wxWidgets style flags for this control into the Windows style
 222     // and optional extended style for the corresponding native control
 223     //
 224     // this is the function that should be overridden in the derived classes,
 225     // but you will mostly use MSWGetCreateWindowFlags() below
 226     virtual WXDWORD MSWGetStyle(long flags, WXDWORD *exstyle = NULL) const ;
 227
 228     // get the MSW window flags corresponding to wxWidgets ones
 229     //
 230     // the functions returns the flags (WS_XXX) directly and puts the ext
 231     // (WS_EX_XXX) flags into the provided pointer if not NULL
 232     WXDWORD MSWGetCreateWindowFlags(WXDWORD *exflags = NULL) const
 233         { return MSWGetStyle(GetWindowStyle(), exflags); }
 234
 235     // update the real underlying window style flags to correspond to the
 236     // current wxWindow object style (safe to call even if window isn't fully
 237     // created yet)
 238     void MSWUpdateStyle(long flagsOld, long exflagsOld);
 239
 240     // get the HWND to be used as parent of this window with CreateWindow()
 241     virtual WXHWND MSWGetParent() const;
 242
 243     // get the Win32 window class name used by all wxWindow objects by default
 244     static const wxChar *MSWGetRegisteredClassName();
 245
 246     // creates the window of specified Windows class with given style, extended
 247     // style, title and geometry (default values
 248     //
 249     // returns true if the window has been created, false if creation failed
 250     bool MSWCreate(const wxChar *wclass,
 251                    const wxChar *title = NULL,
 252                    const wxPoint& pos = wxDefaultPosition,
 253                    const wxSize& size = wxDefaultSize,
 254                    WXDWORD style = 0,
 255                    WXDWORD exendedStyle = 0);
 256
 257     virtual bool MSWCommand(WXUINT param, WXWORD id);
 258
 259 #ifndef __WXUNIVERSAL__
 260     // Create an appropriate wxWindow from a HWND
 261     virtual wxWindow* CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd);
 262
 263     // Make sure the window style reflects the HWND style (roughly)
 264     virtual void AdoptAttributesFromHWND();
 265 #endif // __WXUNIVERSAL__
 266
 267     // Setup background and foreground colours correctly
 268     virtual void SetupColours();
 269
 270     // ------------------------------------------------------------------------
 271     // helpers for message handlers: these perform the same function as the
 272     // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
 273     // the correct parameters
 274     // ------------------------------------------------------------------------
 275
 276     void UnpackCommand(WXWPARAM wParam, WXLPARAM lParam,
 277                        WXWORD *id, WXHWND *hwnd, WXWORD *cmd);
 278     void UnpackActivate(WXWPARAM wParam, WXLPARAM lParam,
 279                         WXWORD *state, WXWORD *minimized, WXHWND *hwnd);
 280     void UnpackScroll(WXWPARAM wParam, WXLPARAM lParam,
 281                       WXWORD *code, WXWORD *pos, WXHWND *hwnd);
 282     void UnpackCtlColor(WXWPARAM wParam, WXLPARAM lParam,
 283                         WXHDC *hdc, WXHWND *hwnd);
 284     void UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 285                           WXWORD *item, WXWORD *flags, WXHMENU *hmenu);
 286
 287     // ------------------------------------------------------------------------
 288     // internal handlers for MSW messages: all handlers return a boolean value:
 289     // true means that the handler processed the event and false that it didn't
 290     // ------------------------------------------------------------------------
 291
 292     // there are several cases where we have virtual functions for Windows
 293     // message processing: this is because these messages often require to be
 294     // processed in a different manner in the derived classes. For all other
 295     // messages, however, we do *not* have corresponding MSWOnXXX() function
 296     // and if the derived class wants to process them, it should override
 297     // MSWWindowProc() directly.
 298
 299     // scroll event (both horizontal and vertical)
 300     virtual bool MSWOnScroll(int orientation, WXWORD nSBCode,
 301                              WXWORD pos, WXHWND control);
 302
 303     // child control notifications
 304     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 305
 306     // owner-drawn controls need to process these messages
 307     virtual bool MSWOnDrawItem(int id, WXDRAWITEMSTRUCT *item);
 308     virtual bool MSWOnMeasureItem(int id, WXMEASUREITEMSTRUCT *item);
 309
 310     // the rest are not virtual
 311     bool HandleCreate(WXLPCREATESTRUCT cs, bool *mayCreate);
 312     bool HandleInitDialog(WXHWND hWndFocus);
 313     bool HandleDestroy();
 314
 315     bool HandlePaint();
 316     bool HandlePrintClient(WXHDC hDC);
 317     bool HandleEraseBkgnd(WXHDC hDC);
 318
 319     bool HandleMinimize();
 320     bool HandleMaximize();
 321     bool HandleSize(int x, int y, WXUINT flag);
 322     bool HandleSizing(wxRect& rect);
 323     bool HandleGetMinMaxInfo(void *mmInfo);
 324     bool HandleEnterSizeMove();
 325     bool HandleExitSizeMove();
 326
 327     bool HandleShow(bool show, int status);
 328     bool HandleActivate(int flag, bool minimized, WXHWND activate);
 329
 330     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
 331
 332     bool HandleCtlColor(WXHBRUSH *hBrush, WXHDC hdc, WXHWND hWnd);
 333
 334     bool HandlePaletteChanged(WXHWND hWndPalChange);
 335     bool HandleQueryNewPalette();
 336     bool HandleSysColorChange();
 337     bool HandleDisplayChange();
 338     bool HandleCaptureChanged(WXHWND gainedCapture);
 339     virtual bool HandleSettingChange(WXWPARAM wParam, WXLPARAM lParam);
 340
 341     bool HandleQueryEndSession(long logOff, bool *mayEnd);
 342     bool HandleEndSession(bool endSession, long logOff);
 343
 344     bool HandleSetFocus(WXHWND wnd);
 345     bool HandleKillFocus(WXHWND wnd);
 346
 347     bool HandleDropFiles(WXWPARAM wParam);
 348
 349     bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
 350     bool HandleMouseMove(int x, int y, WXUINT flags);
 351     bool HandleMouseWheel(wxMouseWheelAxis axis,
 352                           WXWPARAM wParam, WXLPARAM lParam);
 353
 354     bool HandleChar(WXWPARAM wParam, WXLPARAM lParam);
 355     bool HandleKeyDown(WXWPARAM wParam, WXLPARAM lParam);
 356     bool HandleKeyUp(WXWPARAM wParam, WXLPARAM lParam);
 357 #if wxUSE_HOTKEY
 358     bool HandleHotKey(WXWPARAM wParam, WXLPARAM lParam);
 359 #endif
 360 #ifdef __WIN32__
 361     int HandleMenuChar(int chAccel, WXLPARAM lParam);
 362 #endif
 363     // Create and process a clipboard event specified by type.
 364     bool HandleClipboardEvent( WXUINT nMsg );
 365
 366     bool HandleQueryDragIcon(WXHICON *hIcon);
 367
 368     bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);
 369
 370     bool HandlePower(WXWPARAM wParam, WXLPARAM lParam, bool *vetoed);
 371
 372
 373     // The main body of common window proc for all wxWindow objects. It tries
 374     // to handle the given message and returns true if it was handled (the
 375     // appropriate return value is then put in result, which must be non-NULL)
 376     // or false if it wasn't.
 377     //
 378     // This function should be overridden in any new code instead of
 379     // MSWWindowProc() even if currently most of the code overrides
 380     // MSWWindowProc() as it had been written before this function was added.
 381     virtual bool MSWHandleMessage(WXLRESULT *result,
 382                                   WXUINT message,
 383                                   WXWPARAM wParam,
 384                                   WXLPARAM lParam);
 385
 386     // Common Window procedure for all wxWindow objects: forwards to
 387     // MSWHandleMessage() and MSWDefWindowProc() if the message wasn't handled.
 388     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 389
 390     // Calls an appropriate default window procedure
 391     virtual WXLRESULT MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 392
 393     // message processing helpers
 394
 395     // return false if the message shouldn't be translated/preprocessed but
 396     // dispatched normally
 397     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 398
 399     // return true if the message was preprocessed and shouldn't be dispatched
 400     virtual bool MSWProcessMessage(WXMSG* pMsg);
 401
 402     // return true if the message was translated and shouldn't be dispatched
 403     virtual bool MSWTranslateMessage(WXMSG* pMsg);
 404
 405     // called when the window is about to be destroyed
 406     virtual void MSWDestroyWindow();
 407
 408
 409     // Functions dealing with painting the window background. The derived
 410     // classes should normally only need to reimplement MSWGetBgBrush() if they
 411     // need to use a non-solid brush for erasing their background. This
 412     // function is called by MSWGetBgBrushForChild() which only exists for the
 413     // weird wxToolBar case and MSWGetBgBrushForChild() itself is used by
 414     // MSWGetBgBrush() to actually find the right brush to use.
 415
 416     // Adjust the origin for the brush returned by MSWGetBgBrushForChild().
 417     //
 418     // This needs to be overridden for scrolled windows to ensure that the
 419     // scrolling of their associated DC is taken into account.
 420     //
 421     // Both parameters must be non-NULL.
 422     virtual void MSWAdjustBrushOrg(int* WXUNUSED(xOrg),
 423                                    int* WXUNUSED(yOrg)) const
 424     {
 425     }
 426
 427     // The brush returned from here must remain valid at least until the next
 428     // event loop iteration. Returning 0, as is done by default, indicates
 429     // there is no custom background brush.
 430     virtual WXHBRUSH MSWGetCustomBgBrush() { return 0; }
 431
 432     // this function should return the brush to paint the children controls
 433     // background or 0 if this window doesn't impose any particular background
 434     // on its children
 435     //
 436     // the hDC parameter is the DC background will be drawn on, it can be used
 437     // to call SetBrushOrgEx() on it if the returned brush is a bitmap one
 438     //
 439     // child parameter is never NULL, it can be this window itself or one of
 440     // its (grand)children
 441     //
 442     // the base class version returns a solid brush if we have a non default
 443     // background colour or 0 otherwise
 444     virtual WXHBRUSH MSWGetBgBrushForChild(WXHDC hDC, wxWindowMSW *child);
 445
 446     // return the background brush to use for painting the given window by
 447     // querying the parent windows via MSWGetBgBrushForChild() recursively
 448     WXHBRUSH MSWGetBgBrush(WXHDC hDC);
 449
 450     enum MSWThemeColour
 451     {
 452         ThemeColourText = 0,
 453         ThemeColourBackground,
 454         ThemeColourBorder
 455     };
 456
 457     // returns a specific theme colour, or if that is not possible then
 458     // wxSystemSettings::GetColour(fallback)
 459     wxColour MSWGetThemeColour(const wchar_t *themeName,
 460                                int themePart,
 461                                int themeState,
 462                                MSWThemeColour themeColour,
 463                                wxSystemColour fallback) const;
 464
 465     // gives the parent the possibility to draw its children background, e.g.
 466     // this is used by wxNotebook to do it using DrawThemeBackground()
 467     //
 468     // return true if background was drawn, false otherwise
 469     virtual bool MSWPrintChild(WXHDC WXUNUSED(hDC), wxWindow * WXUNUSED(child))
 470     {
 471         return false;
 472     }
 473
 474     // some controls (e.g. wxListBox) need to set the return value themselves
 475     //
 476     // return true to let parent handle it if we don't, false otherwise
 477     virtual bool MSWShouldPropagatePrintChild()
 478     {
 479         return true;
 480     }
 481
 482     // This should be overridden to return true for the controls which have
 483     // themed background that should through their children. Currently only
 484     // wxNotebook uses this.
 485     //
 486     // The base class version already returns true if we have a solid
 487     // background colour that should be propagated to our children.
 488     virtual bool MSWHasInheritableBackground() const
 489     {
 490         return InheritsBackgroundColour();
 491     }
 492
 493 #if !defined(__WXWINCE__) && !defined(__WXUNIVERSAL__)
 494     #define wxHAS_MSW_BACKGROUND_ERASE_HOOK
 495 #endif
 496
 497 #ifdef wxHAS_MSW_BACKGROUND_ERASE_HOOK
 498     // allows the child to hook into its parent WM_ERASEBKGND processing: call
 499     // MSWSetEraseBgHook() with a non-NULL window to make parent call
 500     // MSWEraseBgHook() on this window (don't forget to reset it to NULL
 501     // afterwards)
 502     //
 503     // this hack is used by wxToolBar, see comments there
 504     void MSWSetEraseBgHook(wxWindow *child);
 505
 506     // return true if WM_ERASEBKGND is currently hooked
 507     bool MSWHasEraseBgHook() const;
 508
 509     // called when the window on which MSWSetEraseBgHook() had been called
 510     // receives WM_ERASEBKGND
 511     virtual bool MSWEraseBgHook(WXHDC WXUNUSED(hDC)) { return false; }
 512 #endif // wxHAS_MSW_BACKGROUND_ERASE_HOOK
 513
 514     // common part of Show/HideWithEffect()
 515     bool MSWShowWithEffect(bool show,
 516                            wxShowEffect effect,
 517                            unsigned timeout);
 518
 519     // Responds to colour changes: passes event on to children.
 520     void OnSysColourChanged(wxSysColourChangedEvent& event);
 521
 522     // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
 523     void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);
 524
 525     // check if mouse is in the window
 526     bool IsMouseInWindow() const;
 527
 528     // check if a native double-buffering applies for this window
 529     virtual bool IsDoubleBuffered() const;
 530
 531     void SetDoubleBuffered(bool on);
 532
 533     // synthesize a wxEVT_LEAVE_WINDOW event and set m_mouseInWindow to false
 534     void GenerateMouseLeave();
 535
 536     // virtual function for implementing internal idle
 537     // behaviour
 538     virtual void OnInternalIdle();
 539
 540 protected:
 541     // this allows you to implement standard control borders without
 542     // repeating the code in different classes that are not derived from
 543     // wxControl
 544     virtual wxBorder GetDefaultBorderForControl() const;
 545
 546     // choose the default border for this window
 547     virtual wxBorder GetDefaultBorder() const;
 548
 549     // Translate wxBORDER_THEME (and other border styles if necessary to the value
 550     // that makes most sense for this Windows environment
 551     virtual wxBorder TranslateBorder(wxBorder border) const;
 552
 553 #if wxUSE_MENUS_NATIVE
 554     virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
 555 #endif // wxUSE_MENUS_NATIVE
 556
 557     // the window handle
 558     WXHWND                m_hWnd;
 559
 560     // the old window proc (we subclass all windows)
 561     WXFARPROC             m_oldWndProc;
 562
 563     // additional (MSW specific) flags
 564     bool                  m_mouseInWindow:1;
 565     bool                  m_lastKeydownProcessed:1;
 566
 567     // the size of one page for scrolling
 568     int                   m_xThumbSize;
 569     int                   m_yThumbSize;
 570
 571     // implement the base class pure virtuals
 572     virtual void DoGetTextExtent(const wxString& string,
 573                                  int *x, int *y,
 574                                  int *descent = NULL,
 575                                  int *externalLeading = NULL,
 576                                  const wxFont *font = NULL) const;
 577     virtual void DoClientToScreen( int *x, int *y ) const;
 578     virtual void DoScreenToClient( int *x, int *y ) const;
 579     virtual void DoGetPosition( int *x, int *y ) const;
 580     virtual void DoGetSize( int *width, int *height ) const;
 581     virtual void DoGetClientSize( int *width, int *height ) const;
 582     virtual void DoSetSize(int x, int y,
 583                            int width, int height,
 584                            int sizeFlags = wxSIZE_AUTO);
 585     virtual void DoSetClientSize(int width, int height);
 586
 587     virtual wxSize DoGetBorderSize() const;
 588
 589     virtual void DoCaptureMouse();
 590     virtual void DoReleaseMouse();
 591
 592     virtual void DoEnable(bool enable);
 593
 594     virtual void DoFreeze();
 595     virtual void DoThaw();
 596
 597     // this simply moves/resizes the given HWND which is supposed to be our
 598     // sibling (this is useful for controls which are composite at MSW level
 599     // and for which DoMoveWindow() is not enough)
 600     //
 601     // returns true if the window move was deferred, false if it was moved
 602     // immediately (no error return)
 603     bool DoMoveSibling(WXHWND hwnd, int x, int y, int width, int height);
 604
 605     // move the window to the specified location and resize it: this is called
 606     // from both DoSetSize() and DoSetClientSize() and would usually just call
 607     // ::MoveWindow() except for composite controls which will want to arrange
 608     // themselves inside the given rectangle
 609     virtual void DoMoveWindow(int x, int y, int width, int height);
 610
 611 #if wxUSE_TOOLTIPS
 612     virtual void DoSetToolTip( wxToolTip *tip );
 613
 614     // process TTN_NEEDTEXT message properly (i.e. fixing the bugs in
 615     // comctl32.dll in our code -- see the function body for more info)
 616     bool HandleTooltipNotify(WXUINT code,
 617                              WXLPARAM lParam,
 618                              const wxString& ttip);
 619 #endif // wxUSE_TOOLTIPS
 620
 621     // This is used by CreateKeyEvent() and also for wxEVT_CHAR[_HOOK] event
 622     // creation. Notice that this method doesn't initialize wxKeyEvent
 623     // m_keyCode and m_uniChar fields.
 624     void InitAnyKeyEvent(wxKeyEvent& event,
 625                          WXWPARAM wParam,
 626                          WXLPARAM lParam) const;
 627
 628     // Helper functions used by HandleKeyXXX() methods and some derived
 629     // classes, wParam and lParam have the same meaning as in WM_KEY{DOWN,UP}.
 630     //
 631     // NB: evType here must be wxEVT_KEY_{DOWN,UP} as wParam here contains the
 632     //     virtual key code, not character!
 633     wxKeyEvent CreateKeyEvent(wxEventType evType,
 634                               WXWPARAM wParam,
 635                               WXLPARAM lParam = 0) const;
 636
 637     // Another helper for creating wxKeyEvent for wxEVT_CHAR and related types.
 638     //
 639     // The wParam and lParam here must come from WM_CHAR event parameters, i.e.
 640     // wParam must be a character and not a virtual code.
 641     wxKeyEvent CreateCharEvent(wxEventType evType,
 642                                WXWPARAM wParam,
 643                                WXLPARAM lParam) const;
 644
 645
 646     // default OnEraseBackground() implementation, return true if we did erase
 647     // the background, false otherwise (i.e. the system should erase it)
 648     bool DoEraseBackground(WXHDC hDC);
 649
 650     // generate WM_CHANGEUISTATE if it's needed for the OS we're running under
 651     //
 652     // action should be one of the UIS_XXX constants
 653     // state should be one or more of the UISF_XXX constants
 654     // if action == UIS_INITIALIZE then it doesn't seem to matter what we use
 655     // for state as the system will decide for us what needs to be set
 656     void MSWUpdateUIState(int action, int state = 0);
 657
 658     // translate wxWidgets coords into Windows ones suitable to be passed to
 659     // ::CreateWindow(), called from MSWCreate()
 660     virtual void MSWGetCreateWindowCoords(const wxPoint& pos,
 661                                           const wxSize& size,
 662                                           int& x, int& y,
 663                                           int& w, int& h) const;
 664
 665     bool MSWEnableHWND(WXHWND hWnd, bool enable);
 666
 667 private:
 668     // common part of all ctors
 669     void Init();
 670
 671     // the (non-virtual) handlers for the events
 672     bool HandleMove(int x, int y);
 673     bool HandleMoving(wxRect& rect);
 674     bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
 675     bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 676
 677 #if wxUSE_DEFERRED_SIZING
 678 protected:
 679     // this function is called after the window was resized to its new size
 680     virtual void MSWEndDeferWindowPos()
 681     {
 682         m_pendingPosition = wxDefaultPosition;
 683         m_pendingSize = wxDefaultSize;
 684     }
 685
 686     // current defer window position operation handle (may be NULL)
 687     WXHANDLE m_hDWP;
 688
 689     // When deferred positioning is done these hold the pending changes, and
 690     // are used for the default values if another size/pos changes is done on
 691     // this window before the group of deferred changes is completed.
 692     wxPoint     m_pendingPosition;
 693     wxSize      m_pendingSize;
 694 #endif // wxUSE_DEFERRED_SIZING
 695
 696 private:
 697 #ifdef __POCKETPC__
 698     bool        m_contextMenuEnabled;
 699 #endif
 700
 701     DECLARE_DYNAMIC_CLASS(wxWindowMSW)
 702     wxDECLARE_NO_COPY_CLASS(wxWindowMSW);
 703     DECLARE_EVENT_TABLE()
 704 };
 705
 706 // window creation helper class: before creating a new HWND, instantiate an
 707 // object of this class on stack - this allows to process the messages sent to
 708 // the window even before CreateWindow() returns
 709 class wxWindowCreationHook
 710 {
 711 public:
 712     wxWindowCreationHook(wxWindowMSW *winBeingCreated);
 713     ~wxWindowCreationHook();
 714 };
 715
 716 #endif // _WX_WINDOW_H_