X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/32b5be3d67ad10612ccee4887e7fd79c781e3745..2ad50cc75b44bdb79c3c1a031e1a548d0fa5bfb9:/src/mac/toplevel.cpp diff --git a/src/mac/toplevel.cpp b/src/mac/toplevel.cpp index 06ed406854..d053a98ab1 100644 --- a/src/mac/toplevel.cpp +++ b/src/mac/toplevel.cpp @@ -39,6 +39,7 @@ #include "wx/mac/uma.h" #include "wx/mac/aga.h" +#include "wx/app.h" #include "wx/tooltip.h" #include "wx/dnd.h" @@ -58,14 +59,290 @@ wxWindowList wxModelessWindows; static Point gs_lastWhere; static long gs_lastWhen = 0; -// cursor stuff -extern int wxBusyCursorCount; - - // ============================================================================ // wxTopLevelWindowMac implementation // ============================================================================ +// --------------------------------------------------------------------------- +// Carbon Events +// --------------------------------------------------------------------------- + +#if TARGET_CARBON + +extern long wxMacTranslateKey(unsigned char key, unsigned char code) ; + +static const EventTypeSpec eventList[] = +{ + { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent } , + + { kEventClassKeyboard, kEventRawKeyDown } , + { kEventClassKeyboard, kEventRawKeyRepeat } , + { kEventClassKeyboard, kEventRawKeyUp } , + { kEventClassKeyboard, kEventRawKeyModifiersChanged } , + + { kEventClassWindow , kEventWindowUpdate } , + { kEventClassWindow , kEventWindowActivated } , + { kEventClassWindow , kEventWindowDeactivated } , + { kEventClassWindow , kEventWindowBoundsChanging } , + { kEventClassWindow , kEventWindowBoundsChanged } , + { kEventClassWindow , kEventWindowClose } , + + { kEventClassMouse , kEventMouseDown } , + { kEventClassMouse , kEventMouseUp } , + { kEventClassMouse , kEventMouseMoved } , + { kEventClassMouse , kEventMouseDragged } , + +} ; + +static pascal OSStatus TextInputEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) +{ + OSStatus result = eventNotHandledErr ; + + wxWindow* focus = wxWindow::FindFocus() ; + char charCode ; + UInt32 keyCode ; + UInt32 modifiers ; + Point point ; + UInt32 when = EventTimeToTicks( GetEventTime( event ) ) ; + + EventRef rawEvent ; + + GetEventParameter( event , kEventParamTextInputSendKeyboardEvent ,typeEventRef,NULL,sizeof(rawEvent),NULL,&rawEvent ) ; + + GetEventParameter( rawEvent, kEventParamKeyMacCharCodes, typeChar, NULL,sizeof(char), NULL,&charCode ); + GetEventParameter( rawEvent, kEventParamKeyCode, typeUInt32, NULL, sizeof(UInt32), NULL, &keyCode ); + GetEventParameter( rawEvent, kEventParamKeyModifiers, typeUInt32, NULL, sizeof(UInt32), NULL, &modifiers); + GetEventParameter( rawEvent, kEventParamMouseLocation, typeQDPoint, NULL, + sizeof( Point ), NULL, &point ); + + UInt32 message = (keyCode << 8) + charCode; + + switch ( GetEventKind( event ) ) + { + case kEventTextInputUnicodeForKeyEvent : + if ( (focus != NULL) && wxTheApp->MacSendKeyDownEvent( + focus , message , modifiers , when , point.h , point.v ) ) + { + result = noErr ; + } + break ; + } + + return result ; +} + +static pascal OSStatus KeyboardEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) +{ + OSStatus result = eventNotHandledErr ; + + wxWindow* focus = wxWindow::FindFocus() ; + char charCode ; + UInt32 keyCode ; + UInt32 modifiers ; + Point point ; + UInt32 when = EventTimeToTicks( GetEventTime( event ) ) ; + + GetEventParameter( event, kEventParamKeyMacCharCodes, typeChar, NULL,sizeof(char), NULL,&charCode ); + GetEventParameter( event, kEventParamKeyCode, typeUInt32, NULL, sizeof(UInt32), NULL, &keyCode ); + GetEventParameter(event, kEventParamKeyModifiers, typeUInt32, NULL, sizeof(UInt32), NULL, &modifiers); + GetEventParameter( event, kEventParamMouseLocation, typeQDPoint, NULL, + sizeof( Point ), NULL, &point ); + + UInt32 message = (keyCode << 8) + charCode; + switch( GetEventKind( event ) ) + { + case kEventRawKeyRepeat : + case kEventRawKeyDown : + if ( (focus != NULL) && wxTheApp->MacSendKeyDownEvent( + focus , message , modifiers , when , point.h , point.v ) ) + { + result = noErr ; + } + break ; + case kEventRawKeyUp : + if ( (focus != NULL) && wxTheApp->MacSendKeyUpEvent( + focus , message , modifiers , when , point.h , point.v ) ) + { + result = noErr ; + } + break ; + case kEventRawKeyModifiersChanged : + { + wxKeyEvent event(wxEVT_KEY_DOWN); + + event.m_shiftDown = modifiers & shiftKey; + event.m_controlDown = modifiers & controlKey; + event.m_altDown = modifiers & optionKey; + event.m_metaDown = modifiers & cmdKey; + + event.m_x = point.h; + event.m_y = point.v; + event.m_timeStamp = when; + wxWindow* focus = wxWindow::FindFocus() ; + event.SetEventObject(focus); + + if ( (modifiers ^ wxTheApp->s_lastModifiers ) & controlKey ) + { + event.m_keyCode = WXK_CONTROL ; + event.SetEventType( ( modifiers & controlKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ; + focus->GetEventHandler()->ProcessEvent( event ) ; + } + if ( (modifiers ^ wxTheApp->s_lastModifiers ) & shiftKey ) + { + event.m_keyCode = WXK_SHIFT ; + event.SetEventType( ( modifiers & shiftKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ; + focus->GetEventHandler()->ProcessEvent( event ) ; + } + if ( (modifiers ^ wxTheApp->s_lastModifiers ) & optionKey ) + { + event.m_keyCode = WXK_ALT ; + event.SetEventType( ( modifiers & optionKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ; + focus->GetEventHandler()->ProcessEvent( event ) ; + } + wxTheApp->s_lastModifiers = modifiers ; + } + break ; + } + + return result ; +} + +static pascal OSStatus MouseEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) +{ + OSStatus result = eventNotHandledErr ; + + wxTopLevelWindowMac* toplevelWindow = (wxTopLevelWindowMac*) data ; + Point point ; + UInt32 modifiers = 0; + EventMouseButton button = 0 ; + UInt32 click = 0 ; + + GetEventParameter( event, kEventParamMouseLocation, typeQDPoint, NULL, + sizeof( Point ), NULL, &point ); + GetEventParameter( event, kEventParamKeyModifiers, typeUInt32, NULL, + sizeof( UInt32 ), NULL, &modifiers ); + GetEventParameter( event, kEventParamMouseButton, typeMouseButton, NULL, + sizeof( EventMouseButton ), NULL, &button ); + GetEventParameter( event, kEventParamClickCount, typeUInt32, NULL, + sizeof( UInt32 ), NULL, &click ); + + if ( button == 0 || GetEventKind( event ) == kEventMouseUp ) + modifiers += btnState ; + + WindowRef window ; + short windowPart = ::FindWindow(point, &window); + + if ( IsWindowActive(window) && windowPart == inContent ) + { + switch ( GetEventKind( event ) ) + { + case kEventMouseDown : + toplevelWindow->MacFireMouseEvent( mouseDown , point.h , point.v , modifiers , EventTimeToTicks( GetEventTime( event ) ) ) ; + result = noErr ; + break ; + case kEventMouseUp : + toplevelWindow->MacFireMouseEvent( mouseUp , point.h , point.v , modifiers , EventTimeToTicks( GetEventTime( event ) ) ) ; + result = noErr ; + break ; + case kEventMouseMoved : + toplevelWindow->MacFireMouseEvent( nullEvent , point.h , point.v , modifiers , EventTimeToTicks( GetEventTime( event ) ) ) ; + result = noErr ; + break ; + case kEventMouseDragged : + toplevelWindow->MacFireMouseEvent( nullEvent , point.h , point.v , modifiers , EventTimeToTicks( GetEventTime( event ) ) ) ; + result = noErr ; + break ; + default : + break ; + } + } + + return result ; + + +} +static pascal OSStatus WindowEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) +{ + OSStatus result = eventNotHandledErr ; + OSStatus err = noErr ; + + UInt32 attributes; + WindowRef windowRef ; + wxTopLevelWindowMac* toplevelWindow = (wxTopLevelWindowMac*) data ; + + GetEventParameter( event, kEventParamDirectObject, typeWindowRef, NULL, + sizeof( WindowRef ), NULL, &windowRef ); + + switch( GetEventKind( event ) ) + { + case kEventWindowUpdate : + if ( !wxPendingDelete.Member(toplevelWindow) ) + toplevelWindow->MacUpdate( EventTimeToTicks( GetEventTime( event ) ) ) ; + result = noErr ; + break ; + case kEventWindowActivated : + toplevelWindow->MacActivate( EventTimeToTicks( GetEventTime( event ) ) , true) ; + result = noErr ; + break ; + case kEventWindowDeactivated : + toplevelWindow->MacActivate( EventTimeToTicks( GetEventTime( event ) ) , false) ; + result = noErr ; + break ; + case kEventWindowClose : + toplevelWindow->Close() ; + result = noErr ; + break ; + case kEventWindowBoundsChanged : + err = GetEventParameter( event, kEventParamAttributes, typeUInt32, + NULL, sizeof( UInt32 ), NULL, &attributes ); + if ( err == noErr ) + { + Rect newContentRect ; + + GetEventParameter( event, kEventParamCurrentBounds, typeQDRectangle, NULL, + sizeof( newContentRect ), NULL, &newContentRect ); + + toplevelWindow->SetSize( newContentRect.left , newContentRect.top , + newContentRect.right - newContentRect.left , + newContentRect.bottom - newContentRect.top, wxSIZE_USE_EXISTING); + + result = noErr; + } + break ; + default : + break ; + } + return result ; +} + +pascal OSStatus wxMacWindowEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) +{ + OSStatus result = eventNotHandledErr ; + + switch ( GetEventClass( event ) ) + { + case kEventClassKeyboard : + result = KeyboardEventHandler( handler, event , data ) ; + break ; + case kEventClassTextInput : + result = TextInputEventHandler( handler, event , data ) ; + break ; + case kEventClassWindow : + result = WindowEventHandler( handler, event , data ) ; + break ; + case kEventClassMouse : + result = MouseEventHandler( handler, event , data ) ; + break ; + default : + break ; + } + return result ; +} + +DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacWindowEventHandler ) + +#endif + // --------------------------------------------------------------------------- // wxWindowMac utility functions // --------------------------------------------------------------------------- @@ -78,7 +355,7 @@ wxTopLevelWindowMac *wxFindWinFromMacWindow(WXWindow inWindowRef) wxNode *node = wxWinMacWindowList->Find((long)inWindowRef); if (!node) return NULL; - return (wxTopLevelWindowMac *)node->Data(); + return (wxTopLevelWindowMac *)node->GetData(); } void wxAssociateWinWithMacWindow(WXWindow inWindowRef, wxTopLevelWindowMac *win) @@ -110,8 +387,26 @@ void wxTopLevelWindowMac::Init() m_macNoEraseUpdateRgn = NewRgn() ; m_macNeedsErasing = false ; m_macWindow = NULL ; +#if TARGET_CARBON + m_macEventHandler = NULL ; + #endif } +class wxMacDeferredWindowDeleter : public wxObject +{ +public : + wxMacDeferredWindowDeleter( WindowRef windowRef ) + { + m_macWindow = windowRef ; + } + virtual ~wxMacDeferredWindowDeleter() + { + UMADisposeWindow( (WindowRef) m_macWindow ) ; + } + protected : + WindowRef m_macWindow ; +} ; + bool wxTopLevelWindowMac::Create(wxWindow *parent, wxWindowID id, const wxString& title, @@ -142,26 +437,22 @@ wxTopLevelWindowMac::~wxTopLevelWindowMac() if ( m_macWindow ) { wxToolTip::NotifyWindowDelete(m_macWindow) ; - UMADisposeWindow( (WindowRef) m_macWindow ) ; + wxPendingDelete.Append( new wxMacDeferredWindowDeleter( (WindowRef) m_macWindow ) ) ; } - - wxRemoveMacWindowAssociation( this ) ; + +#if TARGET_CARBON + if ( m_macEventHandler ) + { + ::RemoveEventHandler((EventHandlerRef) m_macEventHandler); + m_macEventHandler = NULL ; + } +#endif - wxTopLevelWindows.DeleteObject(this); + wxRemoveMacWindowAssociation( this ) ; if ( wxModelessWindows.Find(this) ) wxModelessWindows.DeleteObject(this); - // If this is the last top-level window, exit. - if ( wxTheApp && (wxTopLevelWindows.Number() == 0) ) - { - wxTheApp->SetTopWindow(NULL); - - if ( wxTheApp->GetExitOnFrameDelete() ) - { - wxTheApp->ExitMainLoop() ; - } - } DisposeRgn( (RgnHandle) m_macNoEraseUpdateRgn ) ; } @@ -241,29 +532,49 @@ void wxTopLevelWindowMac::MacCreateRealWindow( const wxString& title, WindowClass wclass = 0; WindowAttributes attr = kWindowNoAttributes ; - if ( HasFlag( wxFRAME_TOOL_WINDOW) || HasFlag(wxTINY_CAPTION_HORIZ) || HasFlag(wxTINY_CAPTION_VERT) ) + if ( HasFlag( wxFRAME_TOOL_WINDOW) ) { - wclass = kFloatingWindowClass ; - if ( HasFlag(wxTINY_CAPTION_VERT) ) + if ( + HasFlag( wxMINIMIZE_BOX ) || HasFlag( wxMAXIMIZE_BOX ) || + HasFlag( wxSYSTEM_MENU ) || HasFlag( wxCAPTION ) || + HasFlag(wxTINY_CAPTION_HORIZ) || HasFlag(wxTINY_CAPTION_VERT) + ) + { + wclass = kFloatingWindowClass ; + if ( HasFlag(wxTINY_CAPTION_VERT) ) + { + attr |= kWindowSideTitlebarAttribute ; + } + } + else { - attr |= kWindowSideTitlebarAttribute ; +#if TARGET_CARBON + wclass = kPlainWindowClass ; +#else + wclass = kFloatingWindowClass ; +#endif } } else if ( HasFlag( wxCAPTION ) ) { - if ( HasFlag( wxDIALOG_MODAL ) ) + wclass = kDocumentWindowClass ; + } + else + { + if ( HasFlag( wxMINIMIZE_BOX ) || HasFlag( wxMAXIMIZE_BOX ) || + HasFlag( wxSYSTEM_MENU ) ) { - wclass = kDocumentWindowClass ; // kMovableModalWindowClass ; + wclass = kDocumentWindowClass ; } - else + else { - wclass = kDocumentWindowClass ; +#if TARGET_CARBON + wclass = kPlainWindowClass ; +#else + wclass = kModalWindowClass ; +#endif } } - else - { - wclass = kModalWindowClass ; - } if ( HasFlag( wxMINIMIZE_BOX ) || HasFlag( wxMAXIMIZE_BOX ) ) { @@ -288,7 +599,11 @@ void wxTopLevelWindowMac::MacCreateRealWindow( const wxString& title, label = title ; UMASetWTitleC( (WindowRef)m_macWindow , label ) ; ::CreateRootControl( (WindowRef)m_macWindow , (ControlHandle*)&m_macRootControl ) ; - +#if TARGET_CARBON + InstallStandardEventHandler( GetWindowEventTarget(MAC_WXHWND(m_macWindow)) ) ; + InstallWindowEventHandler(MAC_WXHWND(m_macWindow), GetwxMacWindowEventHandlerUPP(), + GetEventTypeCount(eventList), eventList, this, &((EventHandlerRef)m_macEventHandler)); +#endif m_macFocus = NULL ; } @@ -346,7 +661,7 @@ void wxTopLevelWindowMac::MacUpdate( long timestamp) // Raise the window to the top of the Z order void wxTopLevelWindowMac::Raise() { - ::BringToFront( (WindowRef)m_macWindow ) ; + ::SelectWindow( (WindowRef)m_macWindow ) ; } // Lower the window to the bottom of the Z order @@ -355,26 +670,26 @@ void wxTopLevelWindowMac::Lower() ::SendBehind( (WindowRef)m_macWindow , NULL ) ; } -void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) +void wxTopLevelWindowMac::MacFireMouseEvent( + wxUint16 kind , wxInt32 x , wxInt32 y ,wxUint32 modifiers , long timestamp ) { - EventRecord *ev = (EventRecord*) evr ; wxMouseEvent event(wxEVT_LEFT_DOWN); - bool isDown = !(ev->modifiers & btnState) ; // 1 is for up - bool controlDown = ev->modifiers & controlKey ; // for simulating right mouse + bool isDown = !(modifiers & btnState) ; // 1 is for up + bool controlDown = modifiers & controlKey ; // for simulating right mouse event.m_leftDown = isDown && !controlDown; event.m_middleDown = FALSE; event.m_rightDown = isDown && controlDown; - if ( ev->what == mouseDown ) + if ( kind == mouseDown ) { if ( controlDown ) event.SetEventType(wxEVT_RIGHT_DOWN ) ; else event.SetEventType(wxEVT_LEFT_DOWN ) ; } - else if ( ev->what == mouseUp ) + else if ( kind == mouseUp ) { if ( controlDown ) event.SetEventType(wxEVT_RIGHT_UP ) ; @@ -386,12 +701,14 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) event.SetEventType(wxEVT_MOTION ) ; } - event.m_shiftDown = ev->modifiers & shiftKey; - event.m_controlDown = ev->modifiers & controlKey; - event.m_altDown = ev->modifiers & optionKey; - event.m_metaDown = ev->modifiers & cmdKey; + event.m_shiftDown = modifiers & shiftKey; + event.m_controlDown = modifiers & controlKey; + event.m_altDown = modifiers & optionKey; + event.m_metaDown = modifiers & cmdKey; - Point localwhere = ev->where ; + Point localwhere ; + localwhere.h = x ; + localwhere.v = y ; GrafPtr port ; ::GetPort( &port ) ; @@ -399,9 +716,9 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) ::GlobalToLocal( &localwhere ) ; ::SetPort( port ) ; - if ( ev->what == mouseDown ) + if ( kind == mouseDown ) { - if ( ev->when - gs_lastWhen <= GetDblTime() ) + if ( timestamp - gs_lastWhen <= GetDblTime() ) { if ( abs( localwhere.h - gs_lastWhere.h ) < 3 && abs( localwhere.v - gs_lastWhere.v ) < 3 ) { @@ -417,7 +734,7 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) } else { - gs_lastWhen = ev->when ; + gs_lastWhen = timestamp ; } gs_lastWhere = localwhere ; } @@ -427,7 +744,7 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) event.m_x += m_x; event.m_y += m_y; - event.m_timeStamp = ev->when; + event.m_timeStamp = timestamp; event.SetEventObject(this); if ( wxTheApp->s_captureWindow ) { @@ -439,10 +756,10 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) event.SetEventObject( wxTheApp->s_captureWindow ) ; wxTheApp->s_captureWindow->GetEventHandler()->ProcessEvent( event ) ; - if ( ev->what == mouseUp ) + if ( kind == mouseUp ) { wxTheApp->s_captureWindow = NULL ; - if ( wxBusyCursorCount == 0 ) + if ( !wxIsBusy() ) { m_cursor.MacInstall() ; } @@ -453,10 +770,12 @@ void wxTopLevelWindowMac::MacFireMouseEvent( WXEVENTREF evr ) MacDispatchMouseEvent( event ) ; } } +#if !TARGET_CARBON void wxTopLevelWindowMac::MacMouseDown( WXEVENTREF ev , short part) { - MacFireMouseEvent( ev ) ; + MacFireMouseEvent( mouseDown , ((EventRecord*)ev)->where.h , ((EventRecord*)ev)->where.v , + ((EventRecord*)ev)->modifiers , ((EventRecord*)ev)->when ) ; } void wxTopLevelWindowMac::MacMouseUp( WXEVENTREF ev , short part) @@ -465,7 +784,8 @@ void wxTopLevelWindowMac::MacMouseUp( WXEVENTREF ev , short part) { case inContent: { - MacFireMouseEvent( ev ) ; + MacFireMouseEvent( mouseUp , ((EventRecord*)ev)->where.h , ((EventRecord*)ev)->where.v , + ((EventRecord*)ev)->modifiers , ((EventRecord*)ev)->when ) ; } break ; } @@ -477,28 +797,42 @@ void wxTopLevelWindowMac::MacMouseMoved( WXEVENTREF ev , short part) { case inContent: { - MacFireMouseEvent( ev ) ; + MacFireMouseEvent( nullEvent /*moved*/ , ((EventRecord*)ev)->where.h , ((EventRecord*)ev)->where.v , + ((EventRecord*)ev)->modifiers , ((EventRecord*)ev)->when ) ; } break ; } } -void wxTopLevelWindowMac::MacActivate( WXEVENTREF ev , bool inIsActivating ) + +#endif + +void wxTopLevelWindowMac::MacActivate( long timestamp , bool inIsActivating ) { wxActivateEvent event(wxEVT_ACTIVATE, inIsActivating , m_windowId); - event.m_timeStamp = ((EventRecord*)ev)->when ; + event.m_timeStamp = timestamp ; event.SetEventObject(this); GetEventHandler()->ProcessEvent(event); UMAHighlightAndActivateWindow( (WindowRef)m_macWindow , inIsActivating ) ; - MacSuperEnabled( inIsActivating ) ; + // Early versions of MacOS X don't refresh backgrounds properly, + // so refresh the whole window on activation and deactivation. + long osVersion = UMAGetSystemVersion(); + if (osVersion >= 0x1000 && osVersion < 0x1020) + Refresh(TRUE); + else + MacSuperEnabled( inIsActivating ) ; } +#if !TARGET_CARBON + void wxTopLevelWindowMac::MacKeyDown( WXEVENTREF ev ) { } +#endif + void wxTopLevelWindowMac::SetTitle(const wxString& title) { wxWindow::SetTitle( title ) ; @@ -519,8 +853,8 @@ bool wxTopLevelWindowMac::Show(bool show) return FALSE; if (show) - { - ::ShowWindow( (WindowRef)m_macWindow ) ; + { + ::TransitionWindow((WindowRef)m_macWindow,kWindowZoomTransitionEffect,kWindowShowTransitionAction,nil); ::SelectWindow( (WindowRef)m_macWindow ) ; // no need to generate events here, they will get them triggered by macos // actually they should be , but apparently they are not @@ -531,7 +865,7 @@ bool wxTopLevelWindowMac::Show(bool show) } else { - ::HideWindow( (WindowRef)m_macWindow ) ; + ::TransitionWindow((WindowRef)m_macWindow,kWindowZoomTransitionEffect,kWindowHideTransitionAction,nil); } if ( !show ) @@ -590,9 +924,13 @@ void wxTopLevelWindowMac::DoMoveWindow(int x, int y, int width, int height) if ( doResize ) ::SizeWindow((WindowRef)m_macWindow, m_width, m_height , true); + + // the OS takes care of invalidating and erasing the new area so we only have to + // take care of refreshing for full repaints + + if ( doResize && !HasFlag(wxNO_FULL_REPAINT_ON_RESIZE) ) + Refresh() ; - // the OS takes care of invalidating and erasing the new area - // we have erased the old one if ( IsKindOf( CLASSINFO( wxFrame ) ) ) {