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 class WXDLLEXPORT wxWindow : public wxWindowBase
  53 {
  54     DECLARE_DYNAMIC_CLASS(wxWindow);
  55
  56 public:
  57     wxWindow() { Init(); }
  58
  59     wxWindow(wxWindow *parent,
  60              wxWindowID id,
  61              const wxPoint& pos = wxDefaultPosition,
  62              const wxSize& size = wxDefaultSize,
  63              long style = 0,
  64              const wxString& name = wxPanelNameStr)
  65     {
  66         Init();
  67         Create(parent, id, pos, size, style, name);
  68     }
  69
  70     virtual ~wxWindow();
  71
  72     bool Create(wxWindow *parent,
  73                 wxWindowID id,
  74                 const wxPoint& pos = wxDefaultPosition,
  75                 const wxSize& size = wxDefaultSize,
  76                 long style = 0,
  77                 const wxString& name = wxPanelNameStr);
  78
  79     // implement base class pure virtuals
  80     virtual void SetTitle( const wxString& title);
  81     virtual wxString GetTitle() const;
  82
  83     virtual void Raise();
  84     virtual void Lower();
  85
  86     virtual bool Show( bool show = TRUE );
  87     virtual bool Enable( bool enable = TRUE );
  88
  89     virtual void SetFocus();
  90
  91     virtual bool Reparent( wxWindow *newParent );
  92
  93     virtual void WarpPointer(int x, int y);
  94     virtual void CaptureMouse();
  95     virtual void ReleaseMouse();
  96
  97     virtual void Refresh( bool eraseBackground = TRUE,
  98                           const wxRect *rect = (const wxRect *) NULL );
  99     virtual void Clear();
 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     virtual bool PopupMenu( wxMenu *menu, int x, int y );
 114
 115     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 116                                int range, bool refresh = TRUE );
 117     virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
 118     virtual int GetScrollPos( int orient ) const;
 119     virtual int GetScrollThumb( int orient ) const;
 120     virtual int GetScrollRange( int orient ) const;
 121     virtual void ScrollWindow( int dx, int dy,
 122                                const wxRect* rect = (wxRect *) NULL );
 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     // Native resource loading (implemented in src/msw/nativdlg.cpp)
 159     // FIXME: should they really be all virtual?
 160     virtual bool LoadNativeDialog(wxWindow* parent, wxWindowID& id);
 161     virtual bool LoadNativeDialog(wxWindow* parent, const wxString& name);
 162     wxWindow* GetWindowChild1(wxWindowID id);
 163     wxWindow* GetWindowChild(wxWindowID id);
 164
 165     // implementation from now on
 166     // --------------------------
 167
 168     // simple accessors
 169     // ----------------
 170
 171     WXHWND GetHWND() const { return m_hWnd; }
 172     void SetHWND(WXHWND hWnd) { m_hWnd = hWnd; }
 173     virtual WXWidget GetHandle() const { return GetHWND(); }
 174
 175     bool GetUseCtl3D() const { return m_useCtl3D; }
 176     bool GetTransparentBackground() const { return m_backgroundTransparent; }
 177     void SetTransparent(bool t = TRUE) { m_backgroundTransparent = t; }
 178
 179     // event handlers
 180     // --------------
 181     void OnEraseBackground(wxEraseEvent& event);
 182     void OnIdle(wxIdleEvent& event);
 183
 184     // a window may have a default button
 185     // TODO move into wxPanel and/or wxFrame
 186     wxButton *GetDefaultItem() const { return m_btnDefault; }
 187     void SetDefaultItem(wxButton *btn) { m_btnDefault = btn; }
 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(int 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     virtual WXDWORD MakeExtendedStyle(long style, bool eliminateBorders = TRUE);
 210     // Determine whether 3D effects are wanted
 211     virtual WXDWORD Determine3DEffects(WXDWORD defaultBorderStyle, bool *want3D);
 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     // returns TRUE if the window has been created
 217     bool MSWCreate(int id,
 218                    wxWindow *parent,
 219                    const char *wclass,
 220                    wxWindow *wx_win,
 221                    const char *title,
 222                    int x, int y, int width, int height,
 223                    WXDWORD style,
 224                    const char *dialog_template = NULL,
 225                    WXDWORD exendedStyle = 0);
 226     virtual bool MSWCommand(WXUINT param, WXWORD id);
 227
 228 #if WXWIN_COMPATIBILITY
 229     wxObject *GetChild(int number) const;
 230     virtual void MSWDeviceToLogical(float *x, float *y) const;
 231 #endif // WXWIN_COMPATIBILITY
 232
 233     // Create an appropriate wxWindow from a HWND
 234     virtual wxWindow* CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd);
 235
 236     // Make sure the window style reflects the HWND style (roughly)
 237     virtual void AdoptAttributesFromHWND();
 238
 239     // Setup background and foreground colours correctly
 240     virtual void SetupColours();
 241
 242     // ------------------------------------------------------------------------
 243     // helpers for message handlers: these perform the same function as the
 244     // message crackers from <windowsx.h> - they unpack WPARAM and LPARAM into
 245     // the correct parameters
 246     // ------------------------------------------------------------------------
 247
 248     void UnpackCommand(WXWPARAM wParam, WXLPARAM lParam,
 249                        WXWORD *id, WXHWND *hwnd, WXWORD *cmd);
 250     void UnpackActivate(WXWPARAM wParam, WXLPARAM lParam,
 251                         WXWORD *state, WXWORD *minimized, WXHWND *hwnd);
 252     void UnpackScroll(WXWPARAM wParam, WXLPARAM lParam,
 253                       WXWORD *code, WXWORD *pos, WXHWND *hwnd);
 254     void UnpackCtlColor(WXWPARAM wParam, WXLPARAM lParam,
 255                         WXWORD *nCtlColor, WXHDC *hdc, WXHWND *hwnd);
 256     void UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 257                           WXWORD *item, WXWORD *flags, WXHMENU *hmenu);
 258
 259     // ------------------------------------------------------------------------
 260     // internal handlers for MSW messages: all handlers return a boolen value:
 261     // TRUE means that the handler processed the event and FALSE that it didn't
 262     // ------------------------------------------------------------------------
 263
 264     // there are several cases where we have virtual functions for Windows
 265     // message processing: this is because these messages often require to be
 266     // processed in a different manner in the derived classes. For all other
 267     // messages, however, we do *not* have corresponding MSWOnXXX() function
 268     // and if the derived class wants to process them, it should override
 269     // MSWWindowProc() directly.
 270
 271     // scroll event (both horizontal and vertical)
 272     virtual bool MSWOnScroll(int orientation, WXWORD nSBCode,
 273                              WXWORD pos, WXHWND control);
 274
 275     // child control notifications
 276 #ifdef __WIN95__
 277     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 278 #endif // __WIN95__
 279
 280     // owner-drawn controls need to process these messages
 281     virtual bool MSWOnDrawItem(int id, WXDRAWITEMSTRUCT *item);
 282     virtual bool MSWOnMeasureItem(int id, WXMEASUREITEMSTRUCT *item);
 283
 284     // the rest are not virtual
 285     bool HandleCreate(WXLPCREATESTRUCT cs, bool *mayCreate);
 286     bool HandleInitDialog(WXHWND hWndFocus);
 287     bool HandleDestroy();
 288
 289     bool HandlePaint();
 290     bool HandleEraseBkgnd(WXHDC pDC);
 291
 292     bool HandleMinimize();
 293     bool HandleMaximize();
 294     bool HandleSize(int x, int y, WXUINT flag);
 295     bool HandleGetMinMaxInfo(void *mmInfo);
 296
 297     bool HandleShow(bool show, int status);
 298     bool HandleActivate(int flag, bool minimized, WXHWND activate);
 299
 300     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
 301     bool HandleSysCommand(WXWPARAM wParam, WXLPARAM lParam);
 302
 303     bool HandleCtlColor(WXHBRUSH *hBrush,
 304                                WXHDC hdc,
 305                                WXHWND hWnd,
 306                                WXUINT nCtlColor,
 307                                WXUINT message,
 308                                WXWPARAM wParam,
 309                                WXLPARAM lParam);
 310
 311     bool HandlePaletteChanged(WXHWND hWndPalChange);
 312     bool HandleQueryNewPalette();
 313     bool HandleSysColorChange();
 314
 315     bool HandleQueryEndSession(long logOff, bool *mayEnd);
 316     bool HandleEndSession(bool endSession, long logOff);
 317
 318     bool HandleSetFocus(WXHWND wnd);
 319     bool HandleKillFocus(WXHWND wnd);
 320
 321     bool HandleDropFiles(WXWPARAM wParam);
 322
 323     bool HandleMouseEvent(WXUINT msg, int x, int y, WXUINT flags);
 324     bool HandleMouseMove(int x, int y, WXUINT flags);
 325
 326     bool HandleChar(WXWORD wParam, WXLPARAM lParam, bool isASCII = FALSE);
 327     bool HandleKeyDown(WXWORD wParam, WXLPARAM lParam);
 328     bool HandleKeyUp(WXWORD wParam, WXLPARAM lParam);
 329
 330     bool HandleQueryDragIcon(WXHICON *hIcon);
 331
 332     bool HandleSetCursor(WXHWND hWnd, short nHitTest, int mouseMsg);
 333
 334     // Window procedure
 335     virtual long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 336
 337     // Calls an appropriate default window procedure
 338     virtual long MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 339     virtual bool MSWProcessMessage(WXMSG* pMsg);
 340     virtual bool MSWTranslateMessage(WXMSG* pMsg);
 341     virtual void MSWDestroyWindow();
 342
 343     // Detach "Window" menu from menu bar so it doesn't get deleted
 344     void MSWDetachWindowMenu();
 345
 346     // this function should return the brush to paint the window background
 347     // with or 0 for the default brush
 348     virtual WXHBRUSH OnCtlColor(WXHDC hDC,
 349                                 WXHWND hWnd,
 350                                 WXUINT nCtlColor,
 351                                 WXUINT message,
 352                                 WXWPARAM wParam,
 353                                 WXLPARAM lParam);
 354
 355 #if WXWIN_COMPATIBILITY
 356     void SetShowing(bool show) { (void)Show(show); }
 357     bool IsUserEnabled() const { return IsEnabled(); }
 358 #endif // WXWIN_COMPATIBILITY
 359
 360     // Responds to colour changes: passes event on to children.
 361     void OnSysColourChanged(wxSysColourChangedEvent& event);
 362
 363     // initialize various fields of wxMouseEvent (common part of MSWOnMouseXXX)
 364     void InitMouseEvent(wxMouseEvent& event, int x, int y, WXUINT flags);
 365
 366 protected:
 367     // the window handle
 368     WXHWND                m_hWnd;
 369
 370     // the old window proc (we subclass all windows)
 371     WXFARPROC             m_oldWndProc;
 372
 373     // additional (MSW specific) flags
 374     bool                  m_useCtl3D:1; // Using CTL3D for this control
 375     bool                  m_backgroundTransparent:1;
 376     bool                  m_mouseInWindow:1;
 377     bool                  m_doubleClickAllowed:1;
 378     bool                  m_winCaptured:1;
 379
 380     // the size of one page for scrolling
 381     int                   m_xThumbSize;
 382     int                   m_yThumbSize;
 383
 384 #if wxUSE_MOUSEEVENT_HACK
 385     // the coordinates of the last mouse event and the type of it
 386     long                  m_lastMouseX,
 387                           m_lastMouseY;
 388     int                   m_lastMouseEvent;
 389 #endif // wxUSE_MOUSEEVENT_HACK
 390
 391     WXHMENU               m_hMenu; // Menu, if any
 392
 393     wxButton             *m_btnDefault;
 394
 395     // implement the base class pure virtuals
 396     virtual void DoClientToScreen( int *x, int *y ) const;
 397     virtual void DoScreenToClient( int *x, int *y ) const;
 398     virtual void DoGetPosition( int *x, int *y ) const;
 399     virtual void DoGetSize( int *width, int *height ) const;
 400     virtual void DoGetClientSize( int *width, int *height ) const;
 401     virtual void DoSetSize(int x, int y,
 402                            int width, int height,
 403                            int sizeFlags = wxSIZE_AUTO);
 404     virtual void DoSetClientSize(int width, int height);
 405
 406 #if wxUSE_TOOLTIPS
 407     virtual void DoSetToolTip( wxToolTip *tip );
 408 #endif // wxUSE_TOOLTIPS
 409
 410 private:
 411     // common part of all ctors
 412     void Init();
 413
 414     // the (non-virtual) handlers for the events
 415     bool HandleMove(int x, int y);
 416     bool HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags);
 417
 418 #ifdef __WIN95__
 419     bool HandleNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 420 #endif // __WIN95__
 421
 422     DECLARE_NO_COPY_CLASS(wxWindow);
 423     DECLARE_EVENT_TABLE()
 424 };
 425
 426 // ---------------------------------------------------------------------------
 427 // global functions
 428 // ---------------------------------------------------------------------------
 429
 430 // kbd code translation
 431 WXDLLEXPORT int wxCharCodeMSWToWX(int keySym);
 432 WXDLLEXPORT int wxCharCodeWXToMSW(int id, bool *IsVirtual);
 433
 434 #endif
 435     // _WX_WINDOW_H_