include/wx/msw/window.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        window.h
   3 // Purpose:     wxWindow class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_WINDOW_H_
  13 #define _WX_WINDOW_H_
  14
  15 // ---------------------------------------------------------------------------
  16 // headers
  17 // ---------------------------------------------------------------------------
  18
  19 #ifdef __GNUG__
  20     #pragma interface "window.h"
  21 #endif
  22
  23 // #include "wx/msw/winundef.h"
  24
  25 // VZ: apparently some version of Windows send extra mouse move messages after
  26 //     a mouse click. My tests under NT 4.0 and 95 didn't show it so I'm
  27 //     tempted to think that it was just an effect of a poor mouse and so the
  28 //     code to work around this is currently disabled - just define this as 1
  29 //     to reenable it
  30 #define wxUSE_MOUSEEVENT_HACK 0
  31
  32 // ---------------------------------------------------------------------------
  33 // forward declarations
  34 // ---------------------------------------------------------------------------
  35
  36 class WXDLLEXPORT wxButton;
  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 wxWindow : public wxWindowBase
  54 {
  55 public:
  56     wxWindow() { Init(); }
  57
  58     wxWindow(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 ~wxWindow();
  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( wxWindow *newParent );
  91
  92     virtual void WarpPointer(int x, int y);
  93     virtual void CaptureMouse();
  94     virtual void ReleaseMouse();
  95
  96     virtual void Refresh( bool eraseBackground = TRUE,
  97                           const wxRect *rect = (const wxRect *) NULL );
  98     virtual void Clear();
  99
 100     virtual bool SetCursor( const wxCursor &cursor );
 101     virtual bool SetFont( const wxFont &font );
 102
 103     virtual int GetCharHeight() const;
 104     virtual int GetCharWidth() const;
 105     virtual void GetTextExtent(const wxString& string,
 106                                int *x, int *y,
 107                                int *descent = (int *) NULL,
 108                                int *externalLeading = (int *) NULL,
 109                                const wxFont *theFont = (const wxFont *) NULL)
 110                                const;
 111
 112     virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
 113
 114     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 115                                int range, bool refresh = TRUE );
 116     virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
 117     virtual int GetScrollPos( int orient ) const;
 118     virtual int GetScrollThumb( int orient ) const;
 119     virtual int GetScrollRange( int orient ) const;
 120     virtual void ScrollWindow( int dx, int dy,
 121                                const wxRect* rect = (wxRect *) NULL );
 122
 123 #if wxUSE_DRAG_AND_DROP
 124     virtual void SetDropTarget( wxDropTarget *dropTarget );
 125 #endif // wxUSE_DRAG_AND_DROP
 126
 127     // Accept files for dragging
 128     virtual void DragAcceptFiles(bool accept);
 129
 130 #if WXWIN_COMPATIBILITY
 131     // Set/get scroll attributes
 132     virtual void SetScrollRange(int orient, int range, bool refresh = TRUE);
 133     virtual void SetScrollPage(int orient, int page, bool refresh = TRUE);
 134     virtual int OldGetScrollRange(int orient) const;
 135     virtual int GetScrollPage(int orient) const;
 136
 137     // event handlers
 138         // Handle a control command
 139     virtual void OnCommand(wxWindow& win, wxCommandEvent& event);
 140
 141         // Override to define new behaviour for default action (e.g. double
 142         // clicking on a listbox)
 143     virtual void OnDefaultAction(wxControl * WXUNUSED(initiatingItem)) { }
 144 #endif // WXWIN_COMPATIBILITY
 145
 146 #if wxUSE_CARET && WXWIN_COMPATIBILITY
 147     // caret manipulation (old MSW only functions, see wxCaret class for the
 148     // new API)
 149     void CreateCaret(int w, int h);
 150     void CreateCaret(const wxBitmap *bitmap);
 151     void DestroyCaret();
 152     void ShowCaret(bool show);
 153     void SetCaretPos(int x, int y);
 154     void GetCaretPos(int *x, int *y) const;
 155 #endif // wxUSE_CARET
 156
 157     // Native resource loading (implemented in src/msw/nativdlg.cpp)
 158     // FIXME: should they really be all virtual?
 159     virtual bool LoadNativeDialog(wxWindow* parent, wxWindowID& id);
 160     virtual bool LoadNativeDialog(wxWindow* parent, const wxString& name);
 161     wxWindow* GetWindowChild1(wxWindowID id);
 162     wxWindow* GetWindowChild(wxWindowID id);
 163
 164     // a MSW only function which sends a size event to the window using its
 165     // current size - this has an effect of refreshing the window layout
 166     void SendSizeEvent();
 167
 168     // implementation from now on
 169     // --------------------------
 170
 171     // simple accessors
 172     // ----------------
 173
 174     WXHWND GetHWND() const { return m_hWnd; }
 175     void SetHWND(WXHWND hWnd) { m_hWnd = hWnd; }
 176     virtual WXWidget GetHandle() const { return GetHWND(); }
 177
 178     bool GetUseCtl3D() const { return m_useCtl3D; }
 179     bool GetTransparentBackground() const { return m_backgroundTransparent; }
 180     void SetTransparent(bool t = TRUE) { m_backgroundTransparent = t; }
 181
 182     // event handlers
 183     // --------------
 184
 185     void OnSetFocus(wxFocusEvent& event);
 186     void OnEraseBackground(wxEraseEvent& event);
 187     void OnIdle(wxIdleEvent& event);
 188
 189 public:
 190     // For implementation purposes - sometimes decorations make the client area
 191     // smaller
 192     virtual wxPoint GetClientAreaOrigin() const;
 193
 194     // Makes an adjustment to the window position (for example, a frame that has
 195     // a toolbar that it manages itself).
 196     virtual void AdjustForParentClientOrigin(int& x, int& y, int sizeFlags);
 197
 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     wxWindow *FindItem(long id) const;
 206     wxWindow *FindItemByHWND(WXHWND hWnd, bool controlOnly = FALSE) const;
 207
 208     // Make a Windows extended style from the given wxWindows window style
 209     static WXDWORD MakeExtendedStyle(long style,
 210                                      bool eliminateBorders = TRUE);
 211     // Determine whether 3D effects are wanted
 212     WXDWORD Determine3DEffects(WXDWORD defaultBorderStyle, bool *want3D) const;
 213
 214     // MSW only: TRUE if this control is part of the main control
 215     virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return FALSE; };
 216
 217     // returns TRUE if the window has been created
 218     bool MSWCreate(int id,
 219                    wxWindow *parent,
 220                    const wxChar *wclass,
 221                    wxWindow *wx_win,
 222                    const wxChar *title,
 223                    int x, int y, int width, int height,
 224                    WXDWORD style,
 225                    const wxChar *dialog_template = NULL,
 226                    WXDWORD exendedStyle = 0);
 227     virtual bool MSWCommand(WXUINT param, WXWORD id);
 228
 229 #if WXWIN_COMPATIBILITY
 230     wxObject *GetChild(int number) const;
 231     virtual void MSWDeviceToLogical(float *x, float *y) const;
 232 #endif // WXWIN_COMPATIBILITY
 233
 234     // Create an appropriate wxWindow from a HWND
 235     virtual wxWindow* CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd);
 236
 237     // Make sure the window style reflects the HWND style (roughly)
 238     virtual void AdoptAttributesFromHWND();
 239
 240     // Setup background and foreground colours correctly
 241     virtual void SetupColours();
 242
 243     // ------------------------------------------------------------------------
 244     // helpers for message handlers: these perform the same function as the
 245     // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
 246     // the correct parameters
 247     // ------------------------------------------------------------------------
 248
 249     void UnpackCommand(WXWPARAM wParam, WXLPARAM lParam,
 250                        WXWORD *id, WXHWND *hwnd, WXWORD *cmd);
 251     void UnpackActivate(WXWPARAM wParam, WXLPARAM lParam,
 252                         WXWORD *state, WXWORD *minimized, WXHWND *hwnd);
 253     void UnpackScroll(WXWPARAM wParam, WXLPARAM lParam,
 254                       WXWORD *code, WXWORD *pos, WXHWND *hwnd);
 255     void UnpackCtlColor(WXWPARAM wParam, WXLPARAM lParam,
 256                         WXWORD *nCtlColor, WXHDC *hdc, WXHWND *hwnd);
 257     void UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 258                           WXWORD *item, WXWORD *flags, WXHMENU *hmenu);
 259
 260     // ------------------------------------------------------------------------
 261     // internal handlers for MSW messages: all handlers return a boolen value:
 262     // TRUE means that the handler processed the event and FALSE that it didn't
 263     // ------------------------------------------------------------------------
 264
 265     // there are several cases where we have virtual functions for Windows
 266     // message processing: this is because these messages often require to be
 267     // processed in a different manner in the derived classes. For all other
 268     // messages, however, we do *not* have corresponding MSWOnXXX() function
 269     // and if the derived class wants to process them, it should override
 270     // MSWWindowProc() directly.
 271
 272     // scroll event (both horizontal and vertical)
 273     virtual bool MSWOnScroll(int orientation, WXWORD nSBCode,
 274                              WXWORD pos, WXHWND control);
 275
 276     // child control notifications
 277 #ifdef __WIN95__
 278     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 279 #endif // __WIN95__
 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 HandleEraseBkgnd(WXHDC pDC);
 292
 293     bool HandleMinimize();
 294     bool HandleMaximize();
 295     bool HandleSize(int x, int y, WXUINT flag);
 296     bool HandleGetMinMaxInfo(void *mmInfo);
 297
 298     bool HandleShow(bool show, int status);
 299     bool HandleActivate(int flag, bool minimized, WXHWND activate);
 300
 301     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
 302     bool HandleSysCommand(WXWPARAM wParam, WXLPARAM lParam);
 303
 304     bool HandleCtlColor(WXHBRUSH *hBrush,
 305                         WXHDC hdc,
 306                         WXHWND hWnd,
 307                         WXUINT nCtlColor,
 308                         WXUINT message,
 309                         WXWPARAM wParam,
 310                         WXLPARAM lParam);
 311
 312     bool HandlePaletteChanged(WXHWND hWndPalChange);
 313     bool HandleQueryNewPalette();
 314     bool HandleSysColorChange();
 315
 316     bool HandleQueryEndSession(long logOff, bool *mayEnd);
 317     bool HandleEndSession(bool endSession, long logOff);
 318
 319     bool HandleSetFocus(WXHWND wnd);
 320     bool HandleKillFocus(WXHWND wnd);
 321
 322     bool HandleDropFiles(WXWPARAM wParam);
 323
 324     bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
 325     bool HandleMouseMove(int x, int y, WXUINT flags);
 326
 327     bool HandleChar(WXWORD wParam, WXLPARAM lParam, bool isASCII = FALSE);
 328     bool HandleKeyDown(WXWORD wParam, WXLPARAM lParam);
 329     bool HandleKeyUp(WXWORD wParam, WXLPARAM lParam);
 330
 331     bool HandleQueryDragIcon(WXHICON *hIcon);
 332
 333     bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);
 334
 335     // Window procedure
 336     virtual long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 337
 338     // Calls an appropriate default window procedure
 339     virtual long MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 340     virtual bool MSWProcessMessage(WXMSG* pMsg);
 341     virtual bool MSWTranslateMessage(WXMSG* pMsg);
 342     virtual void MSWDestroyWindow();
 343
 344     // Detach "Window" menu from menu bar so it doesn't get deleted
 345     void MSWDetachWindowMenu();
 346
 347     // this function should return the brush to paint the window background
 348     // with or 0 for the default brush
 349     virtual WXHBRUSH OnCtlColor(WXHDC hDC,
 350                                 WXHWND hWnd,
 351                                 WXUINT nCtlColor,
 352                                 WXUINT message,
 353                                 WXWPARAM wParam,
 354                                 WXLPARAM lParam);
 355
 356 #if WXWIN_COMPATIBILITY
 357     void SetShowing(bool show) { (void)Show(show); }
 358     bool IsUserEnabled() const { return IsEnabled(); }
 359 #endif // WXWIN_COMPATIBILITY
 360
 361     // Responds to colour changes: passes event on to children.
 362     void OnSysColourChanged(wxSysColourChangedEvent& event);
 363
 364     // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
 365     void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);
 366
 367 protected:
 368     // the window handle
 369     WXHWND                m_hWnd;
 370
 371     // the old window proc (we subclass all windows)
 372     WXFARPROC             m_oldWndProc;
 373
 374     // additional (MSW specific) flags
 375     bool                  m_useCtl3D:1; // Using CTL3D for this control
 376     bool                  m_backgroundTransparent:1;
 377     bool                  m_mouseInWindow:1;
 378     bool                  m_doubleClickAllowed:1;
 379     bool                  m_winCaptured:1;
 380
 381     // the size of one page for scrolling
 382     int                   m_xThumbSize;
 383     int                   m_yThumbSize;
 384
 385 #if wxUSE_MOUSEEVENT_HACK
 386     // the coordinates of the last mouse event and the type of it
 387     long                  m_lastMouseX,
 388                           m_lastMouseY;
 389     int                   m_lastMouseEvent;
 390 #endif // wxUSE_MOUSEEVENT_HACK
 391
 392     WXHMENU               m_hMenu; // Menu, if any
 393
 394     // the return value of WM_GETDLGCODE handler
 395     long m_lDlgCode;
 396
 397     // implement the base class pure virtuals
 398     virtual void DoClientToScreen( int *x, int *y ) const;
 399     virtual void DoScreenToClient( int *x, int *y ) const;
 400     virtual void DoGetPosition( int *x, int *y ) const;
 401     virtual void DoGetSize( int *width, int *height ) const;
 402     virtual void DoGetClientSize( int *width, int *height ) const;
 403     virtual void DoSetSize(int x, int y,
 404                            int width, int height,
 405                            int sizeFlags = wxSIZE_AUTO);
 406     virtual void DoSetClientSize(int width, int height);
 407
 408     // move the window to the specified location and resize it: this is called
 409     // from both DoSetSize() and DoSetClientSize() and would usually just call
 410     // ::MoveWindow() except for composite controls which will want to arrange
 411     // themselves inside the given rectangle
 412     virtual void DoMoveWindow(int x, int y, int width, int height);
 413
 414 #if wxUSE_TOOLTIPS
 415     virtual void DoSetToolTip( wxToolTip *tip );
 416 #endif // wxUSE_TOOLTIPS
 417
 418 private:
 419     // common part of all ctors
 420     void Init();
 421
 422     // the (non-virtual) handlers for the events
 423     bool HandleMove(int x, int y);
 424     bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
 425
 426 #ifdef __WIN95__
 427     bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 428 #endif // __WIN95__
 429
 430     // the helper functions used by HandleChar/KeyXXX methods
 431     wxKeyEvent CreateKeyEvent(wxEventType evType, int id, WXLPARAM lp) const;
 432
 433     DECLARE_DYNAMIC_CLASS(wxWindow);
 434     DECLARE_NO_COPY_CLASS(wxWindow);
 435     DECLARE_EVENT_TABLE()
 436 };
 437
 438 // ---------------------------------------------------------------------------
 439 // global functions
 440 // ---------------------------------------------------------------------------
 441
 442 // kbd code translation
 443 WXDLLEXPORT int wxCharCodeMSWToWX(int keySym);
 444 WXDLLEXPORT int wxCharCodeWXToMSW(int id, bool *IsVirtual);
 445
 446 #endif
 447     // _WX_WINDOW_H_