include/wx/msw/window.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/window.h
   3 // Purpose:     wxWindow 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 and Markus Holzem
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_WINDOW_H_
  14 #define _WX_WINDOW_H_
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma interface "window.h"
  22 #endif
  23
  24 // [at least] some version of Windows send extra mouse move messages after
  25 // a mouse click or a key press - to temporarily fix this problem, set the
  26 // define below to 1
  27 //
  28 // a better solution should be found later...
  29 #define wxUSE_MOUSEEVENT_HACK 0
  30
  31 #include "wx/hash.h"
  32
  33 // pseudo-template HWND <-> wxWindow hash table
  34 WX_DECLARE_HASH(wxWindow, wxWindowList, wxWinHashTable);
  35
  36 extern wxWinHashTable *wxWinHandleHash;
  37
  38 // ---------------------------------------------------------------------------
  39 // constants
  40 // ---------------------------------------------------------------------------
  41
  42 // FIXME does anybody use those? they're unused by wxWindows...
  43 enum
  44 {
  45     wxKEY_SHIFT = 1,
  46     wxKEY_CTRL  = 2
  47 };
  48
  49 // ---------------------------------------------------------------------------
  50 // wxWindow declaration for MSW
  51 // ---------------------------------------------------------------------------
  52
  53 class WXDLLEXPORT wxWindowMSW : public wxWindowBase
  54 {
  55 public:
  56     wxWindowMSW() { Init(); }
  57
  58     wxWindowMSW(wxWindow *parent,
  59                 wxWindowID id,
  60                 const wxPoint& pos = wxDefaultPosition,
  61                 const wxSize& size = wxDefaultSize,
  62                 long style = 0,
  63                 const wxString& name = wxPanelNameStr)
  64     {
  65         Init();
  66         Create(parent, id, pos, size, style, name);
  67     }
  68
  69     virtual ~wxWindowMSW();
  70
  71     bool Create(wxWindow *parent,
  72                 wxWindowID id,
  73                 const wxPoint& pos = wxDefaultPosition,
  74                 const wxSize& size = wxDefaultSize,
  75                 long style = 0,
  76                 const wxString& name = wxPanelNameStr);
  77
  78     // implement base class pure virtuals
  79     virtual void SetTitle( const wxString& title);
  80     virtual wxString GetTitle() const;
  81
  82     virtual void Raise();
  83     virtual void Lower();
  84
  85     virtual bool Show( bool show = TRUE );
  86     virtual bool Enable( bool enable = TRUE );
  87
  88     virtual void SetFocus();
  89
  90     virtual bool Reparent(wxWindowBase *newParent);
  91
  92     virtual void WarpPointer(int x, int y);
  93
  94     virtual void Refresh( bool eraseBackground = TRUE,
  95                           const wxRect *rect = (const wxRect *) NULL );
  96     virtual void Update();
  97     virtual void Clear();
  98     virtual void Freeze();
  99     virtual void Thaw();
 100
 101     virtual bool SetCursor( const wxCursor &cursor );
 102     virtual bool SetFont( const wxFont &font );
 103
 104     virtual int GetCharHeight() const;
 105     virtual int GetCharWidth() const;
 106     virtual void GetTextExtent(const wxString& string,
 107                                int *x, int *y,
 108                                int *descent = (int *) NULL,
 109                                int *externalLeading = (int *) NULL,
 110                                const wxFont *theFont = (const wxFont *) NULL)
 111                                const;
 112
 113 #if wxUSE_MENUS_NATIVE
 114     virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
 115 #endif // wxUSE_MENUS_NATIVE
 116
 117     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 118                                int range, bool refresh = TRUE );
 119     virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
 120     virtual int GetScrollPos( int orient ) const;
 121     virtual int GetScrollThumb( int orient ) const;
 122     virtual int GetScrollRange( int orient ) const;
 123     virtual void ScrollWindow( int dx, int dy,
 124                                const wxRect* rect = (wxRect *) NULL );
 125
 126     virtual bool ScrollLines(int lines);
 127     virtual bool ScrollPages(int pages);
 128
 129 #if wxUSE_DRAG_AND_DROP
 130     virtual void SetDropTarget( wxDropTarget *dropTarget );
 131 #endif // wxUSE_DRAG_AND_DROP
 132
 133     // Accept files for dragging
 134     virtual void DragAcceptFiles(bool accept);
 135
 136 #if WXWIN_COMPATIBILITY
 137     // Set/get scroll attributes
 138     virtual void SetScrollRange(int orient, int range, bool refresh = TRUE);
 139     virtual void SetScrollPage(int orient, int page, bool refresh = TRUE);
 140     virtual int OldGetScrollRange(int orient) const;
 141     virtual int GetScrollPage(int orient) const;
 142
 143     // event handlers
 144         // Handle a control command
 145     virtual void OnCommand(wxWindow& win, wxCommandEvent& event);
 146
 147         // Override to define new behaviour for default action (e.g. double
 148         // clicking on a listbox)
 149     virtual void OnDefaultAction(wxControl * WXUNUSED(initiatingItem)) { }
 150 #endif // WXWIN_COMPATIBILITY
 151
 152 #if wxUSE_CARET && WXWIN_COMPATIBILITY
 153     // caret manipulation (old MSW only functions, see wxCaret class for the
 154     // new API)
 155     void CreateCaret(int w, int h);
 156     void CreateCaret(const wxBitmap *bitmap);
 157     void DestroyCaret();
 158     void ShowCaret(bool show);
 159     void SetCaretPos(int x, int y);
 160     void GetCaretPos(int *x, int *y) const;
 161 #endif // wxUSE_CARET
 162
 163 #ifndef __WXUNIVERSAL__
 164     // Native resource loading (implemented in src/msw/nativdlg.cpp)
 165     // FIXME: should they really be all virtual?
 166     virtual bool LoadNativeDialog(wxWindow* parent, wxWindowID& id);
 167     virtual bool LoadNativeDialog(wxWindow* parent, const wxString& name);
 168     wxWindow* GetWindowChild1(wxWindowID id);
 169     wxWindow* GetWindowChild(wxWindowID id);
 170 #endif // __WXUNIVERSAL__
 171
 172     // a MSW only function which sends a size event to the window using its
 173     // current size - this has an effect of refreshing the window layout
 174 /*
 175 FUNCTION IS NOW A MEMBER OF wxFrame - gt
 176     void SendSizeEvent();
 177 */
 178
 179     // implementation from now on
 180     // --------------------------
 181
 182     // simple accessors
 183     // ----------------
 184
 185     WXHWND GetHWND() const { return m_hWnd; }
 186     void SetHWND(WXHWND hWnd) { m_hWnd = hWnd; }
 187     virtual WXWidget GetHandle() const { return GetHWND(); }
 188
 189     bool GetUseCtl3D() const { return m_useCtl3D; }
 190     bool GetTransparentBackground() const { return m_backgroundTransparent; }
 191     void SetTransparent(bool t = TRUE) { m_backgroundTransparent = t; }
 192
 193     // event handlers
 194     // --------------
 195
 196     void OnEraseBackground(wxEraseEvent& event);
 197     void OnIdle(wxIdleEvent& event);
 198     void OnPaint(wxPaintEvent& event);
 199
 200 public:
 201     // For implementation purposes - sometimes decorations make the client area
 202     // smaller
 203     virtual wxPoint GetClientAreaOrigin() const;
 204
 205     // Windows subclassing
 206     void SubclassWin(WXHWND hWnd);
 207     void UnsubclassWin();
 208
 209     WXFARPROC MSWGetOldWndProc() const { return m_oldWndProc; }
 210     void MSWSetOldWndProc(WXFARPROC proc) { m_oldWndProc = proc; }
 211
 212     wxWindow *FindItem(long id) const;
 213     wxWindow *FindItemByHWND(WXHWND hWnd, bool controlOnly = FALSE) const;
 214
 215     // Make a Windows extended style from the given wxWindows window style
 216     static WXDWORD MakeExtendedStyle(long style,
 217                                      bool eliminateBorders = FALSE);
 218     // Determine whether 3D effects are wanted
 219     WXDWORD Determine3DEffects(WXDWORD defaultBorderStyle, bool *want3D) const;
 220
 221     // MSW only: TRUE if this control is part of the main control
 222     virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return FALSE; };
 223
 224     // translate wxWindows coords into Windows ones suitable to be passed to
 225     // ::CreateWindow()
 226     //
 227     // returns TRUE if non default coords are returned, FALSE otherwise
 228     bool MSWGetCreateWindowCoords(const wxPoint& pos,
 229                                   const wxSize& size,
 230                                   int& x, int& y,
 231                                   int& w, int& h) const;
 232
 233     // creates the window of specified Windows class with given style, extended
 234     // style, title and geometry (default values
 235     //
 236     // returns TRUE if the window has been created, FALSE if creation failed
 237     bool MSWCreate(const wxChar *wclass,
 238                    const wxChar *title = NULL,
 239                    const wxPoint& pos = wxDefaultPosition,
 240                    const wxSize& size = wxDefaultSize,
 241                    WXDWORD style = 0,
 242                    WXDWORD exendedStyle = 0);
 243
 244     virtual bool MSWCommand(WXUINT param, WXWORD id);
 245
 246 #if WXWIN_COMPATIBILITY
 247     wxObject *GetChild(int number) const;
 248     virtual void MSWDeviceToLogical(float *x, float *y) const;
 249 #endif // WXWIN_COMPATIBILITY
 250
 251 #ifndef __WXUNIVERSAL__
 252     // Create an appropriate wxWindow from a HWND
 253     virtual wxWindow* CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd);
 254
 255     // Make sure the window style reflects the HWND style (roughly)
 256     virtual void AdoptAttributesFromHWND();
 257 #endif // __WXUNIVERSAL__
 258
 259     // Setup background and foreground colours correctly
 260     virtual void SetupColours();
 261
 262     // ------------------------------------------------------------------------
 263     // helpers for message handlers: these perform the same function as the
 264     // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
 265     // the correct parameters
 266     // ------------------------------------------------------------------------
 267
 268     void UnpackCommand(WXWPARAM wParam, WXLPARAM lParam,
 269                        WXWORD *id, WXHWND *hwnd, WXWORD *cmd);
 270     void UnpackActivate(WXWPARAM wParam, WXLPARAM lParam,
 271                         WXWORD *state, WXWORD *minimized, WXHWND *hwnd);
 272     void UnpackScroll(WXWPARAM wParam, WXLPARAM lParam,
 273                       WXWORD *code, WXWORD *pos, WXHWND *hwnd);
 274     void UnpackCtlColor(WXWPARAM wParam, WXLPARAM lParam,
 275                         WXWORD *nCtlColor, WXHDC *hdc, WXHWND *hwnd);
 276     void UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 277                           WXWORD *item, WXWORD *flags, WXHMENU *hmenu);
 278
 279     // ------------------------------------------------------------------------
 280     // internal handlers for MSW messages: all handlers return a boolean value:
 281     // TRUE means that the handler processed the event and FALSE that it didn't
 282     // ------------------------------------------------------------------------
 283
 284     // there are several cases where we have virtual functions for Windows
 285     // message processing: this is because these messages often require to be
 286     // processed in a different manner in the derived classes. For all other
 287     // messages, however, we do *not* have corresponding MSWOnXXX() function
 288     // and if the derived class wants to process them, it should override
 289     // MSWWindowProc() directly.
 290
 291     // scroll event (both horizontal and vertical)
 292     virtual bool MSWOnScroll(int orientation, WXWORD nSBCode,
 293                              WXWORD pos, WXHWND control);
 294
 295     // child control notifications
 296 #ifdef __WIN95__
 297     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 298 #endif // __WIN95__
 299
 300     // owner-drawn controls need to process these messages
 301     virtual bool MSWOnDrawItem(int id, WXDRAWITEMSTRUCT *item);
 302     virtual bool MSWOnMeasureItem(int id, WXMEASUREITEMSTRUCT *item);
 303
 304     // the rest are not virtual
 305     bool HandleCreate(WXLPCREATESTRUCT cs, bool *mayCreate);
 306     bool HandleInitDialog(WXHWND hWndFocus);
 307     bool HandleDestroy();
 308
 309     bool HandlePaint();
 310     bool HandleEraseBkgnd(WXHDC pDC);
 311
 312     bool HandleMinimize();
 313     bool HandleMaximize();
 314     bool HandleSize(int x, int y, WXUINT flag);
 315     bool HandleGetMinMaxInfo(void *mmInfo);
 316
 317     bool HandleShow(bool show, int status);
 318     bool HandleActivate(int flag, bool minimized, WXHWND activate);
 319
 320     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
 321     bool HandleSysCommand(WXWPARAM wParam, WXLPARAM lParam);
 322
 323     bool HandleCtlColor(WXHBRUSH *hBrush,
 324                         WXHDC hdc,
 325                         WXHWND hWnd,
 326                         WXUINT nCtlColor,
 327                         WXUINT message,
 328                         WXWPARAM wParam,
 329                         WXLPARAM lParam);
 330
 331     bool HandlePaletteChanged(WXHWND hWndPalChange);
 332     bool HandleQueryNewPalette();
 333     bool HandleSysColorChange();
 334
 335     bool HandleQueryEndSession(long logOff, bool *mayEnd);
 336     bool HandleEndSession(bool endSession, long logOff);
 337
 338     bool HandleSetFocus(WXHWND wnd);
 339     bool HandleKillFocus(WXHWND wnd);
 340
 341     bool HandleDropFiles(WXWPARAM wParam);
 342
 343     bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
 344     bool HandleMouseMove(int x, int y, WXUINT flags);
 345     bool HandleMouseWheel(WXWPARAM wParam, WXLPARAM lParam);
 346
 347     bool HandleChar(WXWPARAM wParam, WXLPARAM lParam, bool isASCII = FALSE);
 348     bool HandleKeyDown(WXWPARAM wParam, WXLPARAM lParam);
 349     bool HandleKeyUp(WXWPARAM wParam, WXLPARAM lParam);
 350
 351     bool HandleQueryDragIcon(WXHICON *hIcon);
 352
 353     bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);
 354
 355     // Window procedure
 356     virtual long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 357
 358     // Calls an appropriate default window procedure
 359     virtual long MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 360
 361     // message processing helpers
 362
 363     // return FALSE if the message shouldn't be translated/preprocessed but
 364     // dispatched normally
 365     virtual bool MSWShouldPreProcessMessage(WXMSG* pMsg);
 366
 367     // return TRUE if the message was preprocessed and shouldn't be dispatched
 368     virtual bool MSWProcessMessage(WXMSG* pMsg);
 369
 370     // return TRUE if the message was translated and shouldn't be dispatched
 371     virtual bool MSWTranslateMessage(WXMSG* pMsg);
 372
 373     // called when the window is about to be destroyed
 374     virtual void MSWDestroyWindow();
 375
 376     // this function should return the brush to paint the window background
 377     // with or 0 for the default brush
 378     virtual WXHBRUSH OnCtlColor(WXHDC hDC,
 379                                 WXHWND hWnd,
 380                                 WXUINT nCtlColor,
 381                                 WXUINT message,
 382                                 WXWPARAM wParam,
 383                                 WXLPARAM lParam);
 384
 385 #if WXWIN_COMPATIBILITY
 386     void SetShowing(bool show) { (void)Show(show); }
 387     bool IsUserEnabled() const { return IsEnabled(); }
 388 #endif // WXWIN_COMPATIBILITY
 389
 390     // Responds to colour changes: passes event on to children.
 391     void OnSysColourChanged(wxSysColourChangedEvent& event);
 392
 393     // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
 394     void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);
 395
 396     // check if mouse is in the window
 397     bool IsMouseInWindow() const;
 398
 399 protected:
 400     // the window handle
 401     WXHWND                m_hWnd;
 402
 403     // the old window proc (we subclass all windows)
 404     WXFARPROC             m_oldWndProc;
 405
 406     // additional (MSW specific) flags
 407     bool                  m_useCtl3D:1; // Using CTL3D for this control
 408     bool                  m_backgroundTransparent:1;
 409     bool                  m_mouseInWindow:1;
 410     bool                  m_doubleClickAllowed:1;
 411
 412     // the size of one page for scrolling
 413     int                   m_xThumbSize;
 414     int                   m_yThumbSize;
 415
 416 #if wxUSE_MOUSEEVENT_HACK
 417     // the coordinates of the last mouse event and the type of it
 418     long                  m_lastMouseX,
 419                           m_lastMouseY;
 420     int                   m_lastMouseEvent;
 421 #endif // wxUSE_MOUSEEVENT_HACK
 422
 423     WXHMENU               m_hMenu; // Menu, if any
 424
 425     // the return value of WM_GETDLGCODE handler
 426     long m_lDlgCode;
 427
 428     // implement the base class pure virtuals
 429     virtual void DoClientToScreen( int *x, int *y ) const;
 430     virtual void DoScreenToClient( int *x, int *y ) const;
 431     virtual void DoGetPosition( int *x, int *y ) const;
 432     virtual void DoGetSize( int *width, int *height ) const;
 433     virtual void DoGetClientSize( int *width, int *height ) const;
 434     virtual void DoSetSize(int x, int y,
 435                            int width, int height,
 436                            int sizeFlags = wxSIZE_AUTO);
 437     virtual void DoSetClientSize(int width, int height);
 438
 439     virtual void DoCaptureMouse();
 440     virtual void DoReleaseMouse();
 441
 442     // move the window to the specified location and resize it: this is called
 443     // from both DoSetSize() and DoSetClientSize() and would usually just call
 444     // ::MoveWindow() except for composite controls which will want to arrange
 445     // themselves inside the given rectangle
 446     virtual void DoMoveWindow(int x, int y, int width, int height);
 447
 448 #if wxUSE_TOOLTIPS
 449     virtual void DoSetToolTip( wxToolTip *tip );
 450 #endif // wxUSE_TOOLTIPS
 451
 452     // the helper functions used by HandleChar/KeyXXX methods
 453     wxKeyEvent CreateKeyEvent(wxEventType evType, int id, WXLPARAM lp) const;
 454
 455 private:
 456     // common part of all ctors
 457     void Init();
 458
 459     // the (non-virtual) handlers for the events
 460     bool HandleMove(int x, int y);
 461     bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
 462
 463 #ifdef __WIN95__
 464     bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 465 #endif // __WIN95__
 466
 467     DECLARE_DYNAMIC_CLASS(wxWindowMSW)
 468     DECLARE_NO_COPY_CLASS(wxWindowMSW)
 469     DECLARE_EVENT_TABLE()
 470 };
 471
 472 // ---------------------------------------------------------------------------
 473 // global functions
 474 // ---------------------------------------------------------------------------
 475
 476 // kbd code translation
 477 WXDLLEXPORT int wxCharCodeMSWToWX(int keySym);
 478 WXDLLEXPORT int wxCharCodeWXToMSW(int id, bool *IsVirtual);
 479
 480 // window creation helper class: before creating a new HWND, instantiate an
 481 // object of this class on stack - this allows to process the messages sent to
 482 // the window even before CreateWindow() returns
 483 class wxWindowCreationHook
 484 {
 485 public:
 486     wxWindowCreationHook(wxWindowMSW *winBeingCreated);
 487     ~wxWindowCreationHook();
 488 };
 489
 490 #endif
 491     // _WX_WINDOW_H_