include/wx/window.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        window.h
   3 // Purpose:     wxWindowBase class - the interface of wxWindow
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_WINDOW_H_BASE_
  13 #define _WX_WINDOW_H_BASE_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "windowbase.h"
  17 #endif
  18
  19 // ----------------------------------------------------------------------------
  20 // headers which we must include here
  21 // ----------------------------------------------------------------------------
  22
  23 #include "wx/event.h"           // the base class
  24
  25 #include "wx/list.h"            // defines wxWindowList
  26
  27 #include "wx/cursor.h"          // we have member variables of these classes
  28 #include "wx/font.h"            // so we can't do without them
  29 #include "wx/colour.h"
  30 #include "wx/region.h"
  31
  32 #if wxUSE_ACCEL
  33     #include "wx/accel.h"
  34 #endif // wxUSE_ACCEL
  35
  36 // ----------------------------------------------------------------------------
  37 // forward declarations
  38 // ----------------------------------------------------------------------------
  39
  40 class WXDLLEXPORT wxCaret;
  41 class WXDLLEXPORT wxClientData;
  42 class WXDLLEXPORT wxControl;
  43 class WXDLLEXPORT wxCursor;
  44 class WXDLLEXPORT wxDC;
  45 class WXDLLEXPORT wxDropTarget;
  46 class WXDLLEXPORT wxItemResource;
  47 class WXDLLEXPORT wxLayoutConstraints;
  48 class WXDLLEXPORT wxResourceTable;
  49 class WXDLLEXPORT wxSizer;
  50 class WXDLLEXPORT wxToolTip;
  51 class WXDLLEXPORT wxValidator;
  52 class WXDLLEXPORT wxWindowBase;
  53 class WXDLLEXPORT wxWindow;
  54
  55 // ----------------------------------------------------------------------------
  56 // (pseudo)template list classes
  57 // ----------------------------------------------------------------------------
  58
  59 WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode);
  60
  61 // ----------------------------------------------------------------------------
  62 // global variables
  63 // ----------------------------------------------------------------------------
  64
  65 WXDLLEXPORT_DATA(extern wxWindowList) wxTopLevelWindows;
  66
  67 // ----------------------------------------------------------------------------
  68 // helper classes used by [SG]etClientObject/Data
  69 //
  70 // TODO move into a separate header?
  71 // ----------------------------------------------------------------------------
  72
  73 class wxClientData
  74 {
  75 public:
  76     wxClientData() { }
  77     virtual ~wxClientData() { }
  78 };
  79
  80 class wxStringClientData : public wxClientData
  81 {
  82 public:
  83     wxStringClientData() { }
  84     wxStringClientData( const wxString &data ) : m_data(data) { }
  85     void SetData( const wxString &data ) { m_data = data; }
  86     const wxString& GetData() const { return m_data; }
  87
  88 private:
  89     wxString  m_data;
  90 };
  91
  92 // ----------------------------------------------------------------------------
  93 // wxWindowBase is the base class for all GUI controls/widgets, this is the public
  94 // interface of this class.
  95 //
  96 // Event handler: windows have themselves as their event handlers by default,
  97 // but their event handlers could be set to another object entirely. This
  98 // separation can reduce the amount of derivation required, and allow
  99 // alteration of a window's functionality (e.g. by a resource editor that
 100 // temporarily switches event handlers).
 101 // ----------------------------------------------------------------------------
 102
 103 class WXDLLEXPORT wxWindowBase : public wxEvtHandler
 104 {
 105     DECLARE_ABSTRACT_CLASS(wxWindowBase);
 106
 107 public:
 108     // creating the window
 109     // -------------------
 110
 111         // default ctor
 112     wxWindowBase() { InitBase(); }
 113
 114         // pseudo ctor (can't be virtual, called from ctor)
 115     bool CreateBase(wxWindowBase *parent,
 116                     wxWindowID id,
 117                     const wxPoint& pos = wxDefaultPosition,
 118                     const wxSize& size = wxDefaultSize,
 119                     long style = 0,
 120                     const wxString& name = wxPanelNameStr);
 121
 122     virtual ~wxWindowBase();
 123
 124 #if wxUSE_WX_RESOURCES
 125     // these functions are implemented in resource.cpp and resourc2.cpp
 126     virtual bool LoadFromResource(wxWindow *parent,
 127                                   const wxString& resourceName,
 128                                   const wxResourceTable *table = (const wxResourceTable *) NULL);
 129     virtual wxControl *CreateItem(const wxItemResource* childResource,
 130                                   const wxItemResource* parentResource,
 131                                   const wxResourceTable *table = (const wxResourceTable *) NULL);
 132 #endif // wxUSE_WX_RESOURCES
 133
 134     // deleting the window
 135     // -------------------
 136
 137         // ask the window to close itself, return TRUE if the event handler
 138         // honoured our request
 139     bool Close( bool force = FALSE );
 140
 141         // the following functions delete the C++ objects (the window itself
 142         // or its children) as well as the GUI windows and normally should
 143         // never be used directly
 144
 145         // delete window unconditionally (dangerous!), returns TRUE if ok
 146     virtual bool Destroy();
 147         // delete all children of this window, returns TRUE if ok
 148     bool DestroyChildren();
 149
 150         // is the window being deleted?
 151     bool IsBeingDeleted() const { return m_isBeingDeleted; }
 152
 153     // window attributes
 154     // -----------------
 155
 156         // the title (or label, see below) of the window: the text which the
 157         // window shows
 158     virtual void SetTitle( const wxString & WXUNUSED(title) ) { }
 159     virtual wxString GetTitle() const { return ""; }
 160
 161         // label is just the same as the title (but for, e.g., buttons it
 162         // makes more sense to speak about labels)
 163     virtual void SetLabel(const wxString& label) { SetTitle(label); }
 164     virtual wxString GetLabel() const { return GetTitle(); }
 165
 166         // the window name is used for ressource setting in X, it is not the
 167         // same as the window title/label
 168     virtual void SetName( const wxString &name ) { m_windowName = name; }
 169     virtual wxString GetName() const { return m_windowName; }
 170
 171         // window id uniquely identifies the window among its siblings unless
 172         // it is -1 which means "don't care"
 173     void SetId( wxWindowID id ) { m_windowId = id; }
 174     wxWindowID GetId() const { return m_windowId; }
 175
 176         // generate a control id for the controls which were not given one by
 177         // user
 178     static int NewControlId() { return --ms_lastControlId; }
 179         // get the id of the control following the one with the given
 180         // (autogenerated) id
 181     static int NextControlId(int id) { return id - 1; }
 182         // get the id of the control preceding the one with the given
 183         // (autogenerated) id
 184     static int PrevControlId(int id) { return id + 1; }
 185
 186     // moving/resizing
 187     // ---------------
 188
 189         // set the window size and/or position
 190     void SetSize( int x, int y, int width, int height,
 191                   int sizeFlags = wxSIZE_AUTO )
 192         {  DoSetSize(x, y, width, height, sizeFlags); }
 193
 194     void SetSize( int width, int height )
 195         { DoSetSize( -1, -1, width, height, wxSIZE_USE_EXISTING ); }
 196
 197     void SetSize( const wxSize& size )
 198         { SetSize( size.x, size.y); }
 199
 200     void SetSize(const wxRect& rect, int sizeFlags = wxSIZE_AUTO)
 201         { DoSetSize(rect.x, rect.y, rect.width, rect.height, sizeFlags); }
 202
 203     void Move( int x, int y )
 204         { DoSetSize( x, y, -1, -1, wxSIZE_USE_EXISTING ); }
 205
 206     void Move(const wxPoint& pt)
 207         { Move(pt.x, pt.y); }
 208
 209         // Z-order
 210     virtual void Raise() = 0;
 211     virtual void Lower() = 0;
 212
 213         // client size is the size of area available for subwindows
 214     void SetClientSize( int width, int height )
 215         { DoSetClientSize(width, height); }
 216
 217     void SetClientSize( const wxSize& size )
 218         { DoSetClientSize(size.x, size.y); }
 219
 220     void SetClientSize(const wxRect& rect)
 221         { SetClientSize( rect.width, rect.height ); }
 222
 223         // get the window position and/or size (pointers may be NULL)
 224     void GetPosition( int *x, int *y ) const { DoGetPosition(x, y); }
 225     wxPoint GetPosition() const
 226     {
 227         int w, h;
 228         DoGetPosition(&w, &h);
 229
 230         return wxPoint(w, h);
 231     }
 232
 233     void GetSize( int *w, int *h ) const { DoGetSize(w, h); }
 234     wxSize GetSize() const
 235     {
 236         int w, h;
 237         DoGetSize(& w, & h);
 238         return wxSize(w, h);
 239     }
 240
 241     wxRect GetRect() const
 242     {
 243         int x, y, w, h;
 244         GetPosition(& x, & y);
 245         GetSize(& w, & h);
 246
 247         return wxRect(x, y, w, h);
 248     }
 249
 250     void GetClientSize( int *w, int *h ) const { DoGetClientSize(w, h); }
 251     wxSize GetClientSize() const
 252     {
 253         int w, h;
 254         DoGetClientSize(& w, & h);
 255
 256         return wxSize(w, h);
 257     }
 258
 259         // centre with respect to the the parent window
 260     void Centre( int direction = wxHORIZONTAL );
 261     void Center( int direction = wxHORIZONTAL ) { Centre(direction); }
 262
 263         // set window size to wrap around its children
 264     virtual void Fit();
 265
 266         // set min/max size of the window
 267     virtual void SetSizeHints( int minW, int minH,
 268                                int maxW = -1, int maxH = -1,
 269                                int incW = -1, int incH = -1 );
 270
 271     // window state
 272     // ------------
 273
 274         // returns TRUE if window was shown/hidden, FALSE if the nothing was
 275         // done (window was already shown/hidden)
 276     virtual bool Show( bool show = TRUE );
 277     bool Hide() { return Show(FALSE); }
 278
 279         // returns TRUE if window was enabled/disabled, FALSE if nothing done
 280     virtual bool Enable( bool enable = TRUE );
 281     bool Disable() { return Enable(FALSE); }
 282
 283     bool IsShown() const { return m_isShown; }
 284     bool IsEnabled() const { return m_isEnabled; }
 285
 286         // get/set window style (setting style won't update the window and so
 287         // is only useful for internal usage)
 288     virtual void SetWindowStyleFlag( long style ) { m_windowStyle = style; }
 289     virtual long GetWindowStyleFlag() const { return m_windowStyle; }
 290
 291         // just some (somewhat shorter) synonims
 292     void SetWindowStyle( long style ) { SetWindowStyleFlag(style); }
 293     long GetWindowStyle() const { return GetWindowStyleFlag(); }
 294
 295     bool HasFlag(int flag) const { return (m_windowStyle & flag) != 0; }
 296
 297     virtual bool IsRetained() const
 298         { return (m_windowStyle & wxRETAINED) != 0; }
 299
 300         // make the window modal (all other windows unresponsive)
 301     virtual void MakeModal(bool modal = TRUE);
 302
 303     // focus handling
 304     // --------------
 305
 306         // set focus to this window
 307     virtual void SetFocus() = 0;
 308
 309         // return the window which currently has the focus or NULL
 310     static wxWindow *FindFocus() /* = 0: implement in derived classes */;
 311
 312         // can this window have focus?
 313     virtual bool AcceptsFocus() const { return IsShown() && IsEnabled(); }
 314
 315     // parent/children relations
 316     // -------------------------
 317
 318         // get the list of children
 319     const wxWindowList& GetChildren() const { return m_children; }
 320     wxWindowList& GetChildren() { return m_children; }
 321
 322         // get the parent or the parent of the parent
 323     wxWindow *GetParent() const { return m_parent; }
 324     inline wxWindow *GetGrandParent() const;
 325
 326         // is this window a top level one?
 327     bool IsTopLevel() const;
 328
 329         // it doesn't really change parent, use ReParent() instead
 330     void SetParent( wxWindowBase *parent ) { m_parent = (wxWindow *)parent; }
 331         // change the real parent of this window, return TRUE if the parent
 332         // was changed, FALSE otherwise (error or newParent == oldParent)
 333     virtual bool Reparent( wxWindowBase *newParent );
 334
 335         // find window among the descendants of this one either by id or by
 336         // name (return NULL if not found)
 337     wxWindow *FindWindow( long id );
 338     wxWindow *FindWindow( const wxString& name );
 339
 340         // implementation mostly
 341     virtual void AddChild( wxWindowBase *child );
 342     virtual void RemoveChild( wxWindowBase *child );
 343
 344     // event handler stuff
 345     // -------------------
 346
 347         // get the current event handler
 348     wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
 349
 350         // replace the event handler (allows to completely subclass the
 351         // window)
 352     void SetEventHandler( wxEvtHandler *handler ) { m_eventHandler = handler; }
 353
 354         // push/pop event handler: allows to chain a custom event handler to
 355         // alreasy existing ones
 356     void PushEventHandler( wxEvtHandler *handler );
 357     wxEvtHandler *PopEventHandler( bool deleteHandler = FALSE );
 358
 359     // validators and client data
 360     // --------------------------
 361
 362 #if wxUSE_VALIDATORS
 363         // a window may have an associated validator which is used to control
 364         // user input
 365     virtual void SetValidator( const wxValidator &validator );
 366     virtual wxValidator *GetValidator() { return m_windowValidator; }
 367 #endif // wxUSE_VALIDATORS
 368
 369         // each window may have associated client data: either a pointer to
 370         // wxClientData object in which case it is managed by the window (i.e.
 371         // it will delete the data when it's destroyed) or an untyped pointer
 372         // which won't be deleted by the window
 373     virtual void SetClientObject( wxClientData *data )
 374     {
 375         if ( m_clientObject )
 376             delete m_clientObject;
 377
 378         m_clientObject = data;
 379     }
 380     virtual wxClientData *GetClientObject() const { return m_clientObject; }
 381
 382     virtual void SetClientData( void *data ) { m_clientData = data; }
 383     virtual void *GetClientData() const { return m_clientData; }
 384
 385     // dialog oriented functions
 386     // -------------------------
 387
 388         // validate the correctness of input, return TRUE if ok
 389     virtual bool Validate();
 390
 391         // transfer data between internal and GUI representations
 392     virtual bool TransferDataToWindow();
 393     virtual bool TransferDataFromWindow();
 394
 395     virtual void InitDialog();
 396
 397 #if wxUSE_ACCEL
 398     // accelerators
 399     // ------------
 400     virtual void SetAcceleratorTable( const wxAcceleratorTable& accel )
 401         { m_acceleratorTable = accel; }
 402     wxAcceleratorTable *GetAcceleratorTable()
 403         { return &m_acceleratorTable; }
 404 #endif // wxUSE_ACCEL
 405
 406     // dialog units translations
 407     // -------------------------
 408
 409     wxPoint ConvertPixelsToDialog( const wxPoint& pt );
 410     wxPoint ConvertDialogToPixels( const wxPoint& pt );
 411     wxSize ConvertPixelsToDialog( const wxSize& sz )
 412     {
 413         wxPoint pt(ConvertPixelsToDialog(wxPoint(sz.x, sz.y)));
 414
 415         return wxSize(pt.x, pt.y);
 416     }
 417
 418     wxSize ConvertDialogToPixels( const wxSize& sz )
 419     {
 420         wxPoint pt(ConvertDialogToPixels(wxPoint(sz.x, sz.y)));
 421
 422         return wxSize(pt.x, pt.y);
 423     }
 424
 425     // mouse functions
 426     // ---------------
 427
 428         // move the mouse to the specified position
 429     virtual void WarpPointer(int x, int y) = 0;
 430
 431         // start or end mouse capture
 432     virtual void CaptureMouse() = 0;
 433     virtual void ReleaseMouse() = 0;
 434
 435     // painting the window
 436     // -------------------
 437
 438         // mark the specified rectangle (or the whole window) as "dirty" so it
 439         // will be repainted
 440     virtual void Refresh( bool eraseBackground = TRUE,
 441                           const wxRect *rect = (const wxRect *) NULL ) = 0;
 442         // clear the window entirely
 443     virtual void Clear() = 0;
 444
 445         // adjust DC for drawing on this window
 446     virtual void PrepareDC( wxDC & WXUNUSED(dc) ) { }
 447
 448         // the update region of the window contains the areas which must be
 449         // repainted by the program
 450     const wxRegion& GetUpdateRegion() const { return m_updateRegion; }
 451     wxRegion& GetUpdateRegion() { return m_updateRegion; }
 452
 453         // these functions verify whether the given point/rectangle belongs to
 454         // (or at least intersects with) the update region
 455     bool IsExposed( int x, int y ) const;
 456     bool IsExposed( int x, int y, int w, int h ) const;
 457
 458     bool IsExposed( const wxPoint& pt ) const
 459         { return IsExposed(pt.x, pt.y); }
 460     bool IsExposed( const wxRect& rect ) const
 461         { return IsExposed(rect.x, rect.y, rect.width, rect.height); }
 462
 463     // colours, fonts and cursors
 464     // --------------------------
 465
 466         // set/retrieve the window colours (system defaults are used by
 467         // default): Set functions return TRUE if colour was changed
 468     virtual bool SetBackgroundColour( const wxColour &colour );
 469     virtual bool SetForegroundColour( const wxColour &colour );
 470
 471     wxColour GetBackgroundColour() const { return m_backgroundColour; }
 472     wxColour GetForegroundColour() const { return m_foregroundColour; }
 473
 474         // set/retrieve the cursor for this window (SetCursor() returns TRUE
 475         // if the cursor was really changed)
 476     virtual bool SetCursor( const wxCursor &cursor );
 477     const wxCursor& GetCursor() const { return m_cursor; }
 478     wxCursor& GetCursor() { return m_cursor; }
 479
 480         // set/retrieve the font for the window (SetFont() returns TRUE if the
 481         // font really changed)
 482     virtual bool SetFont( const wxFont &font ) = 0;
 483     const wxFont& GetFont() const { return m_font; }
 484     wxFont& GetFont() { return m_font; }
 485
 486 #if wxUSE_CARET
 487         // associate a caret with the window
 488     void SetCaret(wxCaret *caret);
 489         // get the current caret (may be NULL)
 490     wxCaret *GetCaret() const { return m_caret; }
 491 #endif // wxUSE_CARET
 492
 493         // get the (average) character size for the current font
 494     virtual int GetCharHeight() const = 0;
 495     virtual int GetCharWidth() const = 0;
 496
 497         // get the width/height/... of the text using current or specified
 498         // font
 499     virtual void GetTextExtent(const wxString& string,
 500                                int *x, int *y,
 501                                int *descent = (int *) NULL,
 502                                int *externalLeading = (int *) NULL,
 503                                const wxFont *theFont = (const wxFont *) NULL)
 504                                const = 0;
 505
 506         // translate to/from screen/client coordinates (pointers may be NULL)
 507     void ClientToScreen( int *x, int *y ) const
 508         { DoClientToScreen(x, y); }
 509     void ScreenToClient( int *x, int *y ) const
 510         { DoScreenToClient(x, y); }
 511     wxPoint ClientToScreen(const wxPoint& pt) const
 512     {
 513         int x = pt.x, y = pt.y;
 514         DoClientToScreen(&x, &y);
 515
 516         return wxPoint(x, y);
 517     }
 518
 519     wxPoint ScreenToClient(const wxPoint& pt) const
 520     {
 521         int x = pt.x, y = pt.y;
 522         DoScreenToClient(&x, &y);
 523
 524         return wxPoint(x, y);
 525     }
 526
 527     // misc
 528     // ----
 529
 530     void UpdateWindowUI();
 531
 532     virtual bool PopupMenu( wxMenu *menu, int x, int y ) = 0;
 533
 534     // scrollbars
 535     // ----------
 536
 537         // configure the window scrollbars
 538     virtual void SetScrollbar( int orient,
 539                                int pos,
 540                                int thumbVisible,
 541                                int range,
 542                                bool refresh = TRUE ) = 0;
 543     virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE ) = 0;
 544     virtual int GetScrollPos( int orient ) const = 0;
 545     virtual int GetScrollThumb( int orient ) const = 0;
 546     virtual int GetScrollRange( int orient ) const = 0;
 547
 548         // scroll window to the specified position
 549     virtual void ScrollWindow( int dx, int dy,
 550                                const wxRect* rect = (wxRect *) NULL ) = 0;
 551
 552     // tooltips
 553     // --------
 554 #if wxUSE_TOOLTIPS
 555         // the easiest way to set a tooltip for a window is to use this method
 556     void SetToolTip( const wxString &tip );
 557         // attach a tooltip to the window
 558     void SetToolTip( wxToolTip *tip ) { DoSetToolTip(tip); }
 559         // get the associated tooltip or NULL if none
 560     wxToolTip* GetToolTip() const { return m_tooltip; }
 561 #endif // wxUSE_TOOLTIPS
 562
 563     // drag and drop
 564     // -------------
 565 #if wxUSE_DRAG_AND_DROP
 566         // set/retrieve the drop target associated with this window (may be
 567         // NULL; it's owned by the window and will be deleted by it)
 568     virtual void SetDropTarget( wxDropTarget *dropTarget ) = 0;
 569     virtual wxDropTarget *GetDropTarget() const { return m_dropTarget; }
 570 #endif // wxUSE_DRAG_AND_DROP
 571
 572     // constraints and sizers
 573     // ----------------------
 574 #if wxUSE_CONSTRAINTS
 575         // set the constraints for this window or retrieve them (may be NULL)
 576     void SetConstraints( wxLayoutConstraints *constraints );
 577     wxLayoutConstraints *GetConstraints() const { return m_constraints; }
 578
 579         // when using constraints, it makes sense to update children positions
 580         // automatically whenever the window is resized - this is done if
 581         // autoLayout is on
 582     void SetAutoLayout( bool autoLayout ) { m_autoLayout = autoLayout; }
 583     bool GetAutoLayout() const { return m_autoLayout; }
 584
 585         // do layout the window and its children
 586     virtual bool Layout();
 587
 588         // implementation only
 589     void UnsetConstraints(wxLayoutConstraints *c);
 590     wxWindowList *GetConstraintsInvolvedIn() const
 591         { return m_constraintsInvolvedIn; }
 592     void AddConstraintReference(wxWindowBase *otherWin);
 593     void RemoveConstraintReference(wxWindowBase *otherWin);
 594     void DeleteRelatedConstraints();
 595     void ResetConstraints();
 596
 597         // these methods may be overriden for special layout algorithms
 598     virtual void SetConstraintSizes(bool recurse = TRUE);
 599     virtual bool LayoutPhase1(int *noChanges);
 600     virtual bool LayoutPhase2(int *noChanges);
 601     virtual bool DoPhase(int);
 602
 603         // these methods are virtual but normally won't be overridden
 604     virtual void TransformSizerToActual(int *x, int *y) const ;
 605     virtual void SetSizeConstraint(int x, int y, int w, int h);
 606     virtual void MoveConstraint(int x, int y);
 607     virtual void GetSizeConstraint(int *w, int *h) const ;
 608     virtual void GetClientSizeConstraint(int *w, int *h) const ;
 609     virtual void GetPositionConstraint(int *x, int *y) const ;
 610
 611         // sizers
 612         // TODO: what are they and how do they work??
 613     void SetSizer( wxSizer *sizer );
 614     wxSizer *GetSizer() const { return m_windowSizer; }
 615
 616     void SetSizerParent( wxWindowBase *win ) { m_sizerParent = win; }
 617     wxWindowBase *GetSizerParent() const { return m_sizerParent; }
 618
 619     virtual void SizerSetSize(int x, int y, int w, int h);
 620     virtual void SizerMove(int x, int y);
 621 #endif // wxUSE_CONSTRAINTS
 622
 623     // backward compatibility
 624     // ----------------------
 625 #if WXWIN_COMPATIBILITY
 626     bool Enabled() const { return IsEnabled(); }
 627
 628     void SetButtonFont(const wxFont& font) { SetFont(font); }
 629     void SetLabelFont(const wxFont& font) { SetFont(font); }
 630     wxFont& GetLabelFont() { return GetFont(); };
 631     wxFont& GetButtonFont() { return GetFont(); };
 632 #endif // WXWIN_COMPATIBILITY
 633
 634     // implementation
 635     // --------------
 636
 637         // event handlers
 638     void OnSysColourChanged( wxSysColourChangedEvent& event );
 639     void OnInitDialog( wxInitDialogEvent &event );
 640
 641         // get the haqndle of the window for the underlying window system: this
 642         // is only used for wxWin itself or for user code which wants to call
 643         // platform-specific APIs
 644     virtual WXWidget GetHandle() const = 0;
 645
 646 protected:
 647     // the window id - a number which uniquely identifies a window among
 648     // its siblings unless it is -1
 649     wxWindowID           m_windowId;
 650
 651     // the parent window of this window (or NULL) and the list of the children
 652     // of this window
 653     wxWindow            *m_parent;
 654     wxWindowList         m_children;
 655
 656     // the minimal allowed size for the window (no minimal size if variable(s)
 657     // contain(s) -1)
 658     int                  m_minWidth, m_minHeight, m_maxWidth, m_maxHeight;
 659
 660     // event handler for this window: usually is just 'this' but may be
 661     // changed with SetEventHandler()
 662     wxEvtHandler        *m_eventHandler;
 663
 664 #if wxUSE_VALIDATORS
 665     // associated validator or NULL if none
 666     wxValidator         *m_windowValidator;
 667 #endif // wxUSE_VALIDATORS
 668
 669 #if wxUSE_DRAG_AND_DROP
 670     wxDropTarget        *m_dropTarget;
 671 #endif // wxUSE_DRAG_AND_DROP
 672
 673     // visual window attributes
 674     wxCursor             m_cursor;
 675     wxFont               m_font;
 676     wxColour             m_backgroundColour, m_foregroundColour;
 677
 678 #if wxUSE_CARET
 679     wxCaret             *m_caret;
 680 #endif // wxUSE_CARET
 681
 682     // the region which should be repainted in response to paint event
 683     wxRegion             m_updateRegion;
 684
 685 #if wxUSE_ACCEL
 686     // the accelerator table for the window which translates key strokes into
 687     // command events
 688     wxAcceleratorTable   m_acceleratorTable;
 689 #endif // wxUSE_ACCEL
 690
 691     // user data associated with the window: either an object which will be
 692     // deleted by the window when it's deleted or some raw pointer which we do
 693     // nothing with
 694     wxClientData        *m_clientObject;
 695     void                *m_clientData;
 696
 697     // the tooltip for this window (may be NULL)
 698 #if wxUSE_TOOLTIPS
 699     wxToolTip           *m_tooltip;
 700 #endif // wxUSE_TOOLTIPS
 701
 702     // constraints and sizers
 703 #if wxUSE_CONSTRAINTS
 704     // the constraints for this window or NULL
 705     wxLayoutConstraints *m_constraints;
 706
 707     // constraints this window is involved in
 708     wxWindowList        *m_constraintsInvolvedIn;
 709
 710     // top level and the parent sizers
 711     // TODO what's this and how does it work?)
 712     wxSizer             *m_windowSizer;
 713     wxWindowBase        *m_sizerParent;
 714
 715     // Layout() window automatically when its size changes?
 716     bool                 m_autoLayout:1;
 717 #endif // wxUSE_CONSTRAINTS
 718
 719     // window state
 720     bool                 m_isShown:1;
 721     bool                 m_isEnabled:1;
 722     bool                 m_isBeingDeleted:1;
 723
 724     // window attributes
 725     long                 m_windowStyle;
 726     wxString             m_windowName;
 727
 728 protected:
 729     // common part of all ctors: it is not virtual because it is called from
 730     // ctor
 731     void InitBase();
 732
 733     // get the default size for the new window if no explicit size given
 734     // FIXME why 20 and not 30, 10 or ...?
 735     static int WidthDefault(int w) { return w == -1 ? 20 : w; }
 736     static int HeightDefault(int h) { return h == -1 ? 20 : h; }
 737
 738     // more pure virtual functions
 739     // ---------------------------
 740
 741     // NB: we must have DoSomething() function when Something() is an overloaded
 742     //     method: indeed, we can't just have "virtual Something()" in case when
 743     //     the function is overloaded because then we'd have to make virtual all
 744     //     the variants (otherwise only the virtual function may be called on a
 745     //     pointer to derived class according to C++ rules) which is, in
 746     //     general, absolutely not needed. So instead we implement all
 747     //     overloaded Something()s in terms of DoSomething() which will be the
 748     //     only one to be virtual.
 749
 750     // coordinates translation
 751     virtual void DoClientToScreen( int *x, int *y ) const = 0;
 752     virtual void DoScreenToClient( int *x, int *y ) const = 0;
 753
 754     // retrieve the position/size of the window
 755     virtual void DoGetPosition( int *x, int *y ) const = 0;
 756     virtual void DoGetSize( int *width, int *height ) const = 0;
 757     virtual void DoGetClientSize( int *width, int *height ) const = 0;
 758
 759     // this is the virtual function to be overriden in any derived class which
 760     // wants to change how SetSize() or Move() works - it is called by all
 761     // versions of these functions in the base class
 762     virtual void DoSetSize(int x, int y,
 763                            int width, int height,
 764                            int sizeFlags = wxSIZE_AUTO) = 0;
 765
 766     // same as DoSetSize() for the client size
 767     virtual void DoSetClientSize(int width, int height) = 0;
 768
 769 #if wxUSE_TOOLTIPS
 770     virtual void DoSetToolTip( wxToolTip *tip );
 771 #endif // wxUSE_TOOLTIPS
 772
 773 private:
 774     // contains the last id generated by NewControlId
 775     static int ms_lastControlId;
 776
 777     DECLARE_NO_COPY_CLASS(wxWindowBase);
 778     DECLARE_EVENT_TABLE()
 779 };
 780
 781 // ----------------------------------------------------------------------------
 782 // now include the declaration of wxWindow class
 783 // ----------------------------------------------------------------------------
 784
 785 #if defined(__WXMSW__)
 786     #include "wx/msw/window.h"
 787 #elif defined(__WXMOTIF__)
 788     #include "wx/motif/window.h"
 789 #elif defined(__WXGTK__)
 790     #include "wx/gtk/window.h"
 791 #elif defined(__WXQT__)
 792     #include "wx/qt/window.h"
 793 #elif defined(__WXMAC__)
 794     #include "wx/mac/window.h"
 795 #endif
 796
 797 // ----------------------------------------------------------------------------
 798 // inline functions which couldn't be declared in the class body because of
 799 // forward dependencies
 800 // ----------------------------------------------------------------------------
 801
 802 inline wxWindow *wxWindowBase::GetGrandParent() const
 803 {
 804     return m_parent ? m_parent->GetParent() : (wxWindow *)NULL;
 805 }
 806
 807 // ----------------------------------------------------------------------------
 808 // global function
 809 // ----------------------------------------------------------------------------
 810
 811 WXDLLEXPORT extern wxWindow* wxGetActiveWindow();
 812 inline WXDLLEXPORT int NewControlId() { return wxWindowBase::NewControlId(); }
 813
 814 #endif
 815     // _WX_WINDOW_H_BASE_