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