best size handling fix

[wxWidgets.git] / src / gtk / window.cpp

diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index a1b9f5657b136fd3bfa75c3b8a8284bf384f237e..cd98009b09baaeaaed996112553255f903309317 100644 (file)
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -145,7 +145,7 @@ extern GtkContainerClass *pizza_parent_class;
    thw wxWindow class has a member variable called m_widget which holds a
    pointer to this widget. When the window class represents a GTK native widget,
    this is (in most cases) the only GTK widget the class manages. E.g. the
    thw wxWindow class has a member variable called m_widget which holds a
    pointer to this widget. When the window class represents a GTK native widget,
    this is (in most cases) the only GTK widget the class manages. E.g. the

-   wxStatitText class handles only a GtkLabel widget a pointer to which you
+   wxStaticText class handles only a GtkLabel widget a pointer to which you

    can find in m_widget (defined in wxWindow)
 
    When the class has a client area for drawing into and for containing children
    can find in m_widget (defined in wxWindow)
 
    When the class has a client area for drawing into and for containing children


@@ -1097,6 +1097,17 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
     if (g_blockEventsOnDrag)
         return FALSE;
 
     if (g_blockEventsOnDrag)
         return FALSE;
 

+#ifdef __WXGTK20__
+    if (win->m_imContext)
+    {
+        // In GTK 2.0, we need to hand over the key event to an input method
+        // and the IM will emit a "commit" event containing the actual utf8
+        // character.  In that case the EVT_CHAR events will be sent from
+        // there.
+        if ( gtk_im_context_filter_keypress(win->m_imContext, gdk_event) )
+            return TRUE;
+    }
+#endif

 
     wxKeyEvent event( wxEVT_KEY_DOWN );
     if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
 
     wxKeyEvent event( wxEVT_KEY_DOWN );
     if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )


@@ -1134,56 +1145,41 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
     {
         long key_code;
         KeySym keysym = gdk_event->keyval;
     {
         long key_code;
         KeySym keysym = gdk_event->keyval;

-#ifdef __WXGTK20__
-        // In GTK 2.0, we need to hand over the key event to an input method
-        // and the IM will emit a "commit" event containing the actual utf8
-        // character.  In that case the EVT_CHAR events will be sent from
-        // there.  But only do it this way for non-KeySym keys.
-        key_code = wxTranslateKeySymToWXKey(gdk_event->keyval, FALSE /* isChar */);
-        if ( !key_code && win->m_imContext )
-        {
-            gtk_im_context_filter_keypress ( (GtkIMContext*) win->m_imContext, gdk_event );
-            ret = TRUE;
-        }
-        else
-#endif
+        // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
+        key_code = wxTranslateKeySymToWXKey(keysym, TRUE /* isChar */);
+        if ( !key_code )

         {
         {

-            // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
-            key_code = wxTranslateKeySymToWXKey(keysym, TRUE /* isChar */);
-            if ( !key_code )
+            if ( gdk_event->length == 1 )

             {
             {

-                if ( gdk_event->length == 1 )
-                {
-                    key_code = (unsigned char)gdk_event->string[0];
-                }
-                else if ( wxIsAsciiKeysym(keysym) )
-                {
-                    // ASCII key
-                    key_code = (unsigned char)keysym;
-                }
+                key_code = (unsigned char)gdk_event->string[0];

             }
             }

-
-            if ( key_code )
+            else if ( wxIsAsciiKeysym(keysym) )

             {
             {

-                wxLogTrace(TRACE_KEYS, _T("Char event: %ld"), key_code);
+                // ASCII key
+                key_code = (unsigned char)keysym;
+            }
+        }

 
 

-                event.m_keyCode = key_code;
+        if ( key_code )
+        {
+            wxLogTrace(TRACE_KEYS, _T("Char event: %ld"), key_code);

 
 

-                // Implement OnCharHook by checking ancesteror top level windows
-                wxWindow *parent = win;
-                while (parent && !parent->IsTopLevel())
-                    parent = parent->GetParent();
-                if (parent)
-                {
-                    event.SetEventType( wxEVT_CHAR_HOOK );
-                    ret = parent->GetEventHandler()->ProcessEvent( event );
-                }
+            event.m_keyCode = key_code;

 
 

-                if (!ret)
-                {
-                    event.SetEventType(wxEVT_CHAR);
-                    ret = win->GetEventHandler()->ProcessEvent( event );
-                }
+            // Implement OnCharHook by checking ancesteror top level windows
+            wxWindow *parent = win;
+            while (parent && !parent->IsTopLevel())
+                parent = parent->GetParent();
+            if (parent)
+            {
+                event.SetEventType( wxEVT_CHAR_HOOK );
+                ret = parent->GetEventHandler()->ProcessEvent( event );
+            }
+
+            if (!ret)
+            {
+                event.SetEventType(wxEVT_CHAR);
+                ret = win->GetEventHandler()->ProcessEvent( event );

             }
         }
     }
             }
         }
     }


@@ -1274,11 +1270,15 @@ static void gtk_wxwindow_commit_cb (GtkIMContext *context,
     if (event.m_uniChar < 256)
         event.m_keyCode = event.m_uniChar;
 #else
     if (event.m_uniChar < 256)
         event.m_keyCode = event.m_uniChar;
 #else

-    gunichar uniChar = g_utf8_get_char( str );
-    // We cannot handle Unicode in non-Unicode mode
-    if (uniChar > 255) return;
-
-    event.m_keyCode = uniChar;
+    wchar_t unistr[2];
+    unistr[0] = g_utf8_get_char(str);
+    unistr[1] = 0;
+    wxCharBuffer ansistr(wxConvLocal.cWC2MB(unistr));
+    // We cannot handle characters that cannot be represented in 
+    // current locale's charset in non-Unicode mode:
+    if (ansistr.data() == NULL) return;
+
+    event.m_keyCode = ansistr[0u];

 #endif
 
 
 #endif
 
 


@@ -1534,8 +1534,8 @@ static gint gtk_window_button_press_callback( GtkWidget *widget,
 
     wxEventType event_type = wxEVT_NULL;
 
 
     wxEventType event_type = wxEVT_NULL;
 

-    // GdkDisplay is a GTK+ 2.1.0 thing
-#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 1, 0)
+    // GdkDisplay is a GTK+ 2.2.0 thing
+#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 2, 0)

     if ( gdk_event->type == GDK_2BUTTON_PRESS &&
             gdk_event->button >= 1 && gdk_event->button <= 3 )
     {
     if ( gdk_event->type == GDK_2BUTTON_PRESS &&
             gdk_event->button >= 1 && gdk_event->button <= 3 )
     {


@@ -1900,6 +1900,11 @@ static gint gtk_window_focus_in_callback( GtkWidget *widget,
     if (g_isIdle)
         wxapp_install_idle_handler();
 
     if (g_isIdle)
         wxapp_install_idle_handler();
 

+#ifdef __WXGTK20__
+    if (win->m_imContext)
+        gtk_im_context_focus_in(win->m_imContext);
+#endif
+

     if (!win->m_hasVMT) return FALSE;
     if (g_blockEventsOnDrag) return FALSE;
 
     if (!win->m_hasVMT) return FALSE;
     if (g_blockEventsOnDrag) return FALSE;
 


@@ -1988,6 +1993,11 @@ static gint gtk_window_focus_out_callback( GtkWidget *widget, GdkEventFocus *gdk
     if (g_isIdle)
         wxapp_install_idle_handler();
 
     if (g_isIdle)
         wxapp_install_idle_handler();
 

+#ifdef __WXGTK20__
+    if (win->m_imContext)
+        gtk_im_context_focus_out(win->m_imContext);
+#endif
+

     if (!win->m_hasVMT) return FALSE;
     if (g_blockEventsOnDrag) return FALSE;
 
     if (!win->m_hasVMT) return FALSE;
     if (g_blockEventsOnDrag) return FALSE;
 


@@ -2307,17 +2317,11 @@ gtk_window_realized_callback( GtkWidget *m_widget, wxWindow *win )
     if (g_isIdle)
         wxapp_install_idle_handler();
         
     if (g_isIdle)
         wxapp_install_idle_handler();
         

-    if (win->m_delayedBackgroundColour && !win->GetThemeEnabled())
-        win->GtkSetBackgroundColour( win->GetBackgroundColour() );
-
-    if (win->m_delayedForegroundColour && !win->GetThemeEnabled())
-        win->GtkSetForegroundColour( win->GetForegroundColour() );
-

 #ifdef __WXGTK20__
     if (win->m_imContext)
     {
         GtkPizza *pizza = GTK_PIZZA( m_widget );
 #ifdef __WXGTK20__
     if (win->m_imContext)
     {
         GtkPizza *pizza = GTK_PIZZA( m_widget );

-        gtk_im_context_set_client_window( (GtkIMContext*) win->m_imContext, pizza->bin_window );
+        gtk_im_context_set_client_window( win->m_imContext, pizza->bin_window );

     }
 #endif
 
     }
 #endif
 


@@ -2575,9 +2579,6 @@ void wxWindowGTK::Init()
 
     m_cursor = *wxSTANDARD_CURSOR;
 
 
     m_cursor = *wxSTANDARD_CURSOR;
 

-    m_delayedForegroundColour = FALSE;
-    m_delayedBackgroundColour = FALSE;
-

 #ifdef __WXGTK20__
     m_imContext = NULL;
     m_x11Context = NULL;
 #ifdef __WXGTK20__
     m_imContext = NULL;
     m_x11Context = NULL;


@@ -2622,9 +2623,6 @@ bool wxWindowGTK::Create( wxWindow *parent,
 
     m_insertCallback = wxInsertChildInWindow;
 
 
     m_insertCallback = wxInsertChildInWindow;
 

-    // always needed for background clearing
-    m_delayedBackgroundColour = TRUE;
-

     m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 
     m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 


@@ -2707,17 +2705,6 @@ bool wxWindowGTK::Create( wxWindow *parent,
     gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
           (GtkSignalFunc) gtk_window_vscroll_callback, (gpointer) this );
 
     gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
           (GtkSignalFunc) gtk_window_vscroll_callback, (gpointer) this );
 

-#ifdef __WXGTK20__
-    // Create input method handler
-    m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
-
-    // Cannot handle drawing preedited text yet
-    gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
-
-    g_signal_connect (G_OBJECT (m_imContext), "commit",
-        G_CALLBACK (gtk_wxwindow_commit_cb), this);
-#endif
-

     gtk_widget_show( m_wxwindow );
 
     if (m_parent)
     gtk_widget_show( m_wxwindow );
 
     if (m_parent)


@@ -2813,18 +2800,18 @@ void wxWindowGTK::PostCreation()
 #else
             // gtk_widget_set_redraw_on_allocate( GTK_WIDGET(m_wxwindow), !HasFlag( wxFULL_REPAINT_ON_RESIZE ) );
 #endif
 #else
             // gtk_widget_set_redraw_on_allocate( GTK_WIDGET(m_wxwindow), !HasFlag( wxFULL_REPAINT_ON_RESIZE ) );
 #endif

+        }

 
 #ifdef __WXGTK20__
         // Create input method handler
 
 #ifdef __WXGTK20__
         // Create input method handler

-        m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
+        m_imContext = gtk_im_multicontext_new();

 
         // Cannot handle drawing preedited text yet
 
         // Cannot handle drawing preedited text yet

-        gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
+        gtk_im_context_set_use_preedit( m_imContext, FALSE );

 
         g_signal_connect (G_OBJECT (m_imContext), "commit",
 
         g_signal_connect (G_OBJECT (m_imContext), "commit",

-            G_CALLBACK (gtk_wxwindow_commit_cb), this);
+                          G_CALLBACK (gtk_wxwindow_commit_cb), this);

 #endif
 #endif

-        }

 
         // these are called when the "sunken" or "raised" borders are drawn
         gtk_signal_connect( GTK_OBJECT(m_widget), "expose_event",
 
         // these are called when the "sunken" or "raised" borders are drawn
         gtk_signal_connect( GTK_OBJECT(m_widget), "expose_event",


@@ -3975,68 +3962,24 @@ void wxWindowGTK::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 }
 #endif // wxUSE_TOOLTIPS
 
 }
 #endif // wxUSE_TOOLTIPS
 

-void wxWindowGTK::GtkSetBackgroundColour( const wxColour &colour )
-{
-    GdkWindow *window = (GdkWindow*) NULL;
-    if (m_wxwindow)
-        window = GTK_PIZZA(m_wxwindow)->bin_window;
-    else
-        window = GetConnectWidget()->window;
-
-    wxASSERT( window );
-
-    // We need the pixel value e.g. for background clearing.
-    m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
-
-    if (m_wxwindow)
-    {
-        // wxMSW doesn't clear the window here, either.
-        gdk_window_set_background( window, m_backgroundColour.GetColor() );
-    }
-
-    ApplyWidgetStyle();
-}
-

 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
 {
     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid window") );
 
     if (!wxWindowBase::SetBackgroundColour(colour))
 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
 {
     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid window") );
 
     if (!wxWindowBase::SetBackgroundColour(colour))

-        return FALSE;
-
-    GdkWindow *window = (GdkWindow*) NULL;
-    if (m_wxwindow)
-        window = GTK_PIZZA(m_wxwindow)->bin_window;
-    else
-        window = GetConnectWidget()->window;
+        return false;

 
 

-    if (!window)
-    {
-        // indicate that a new style has been set
-        // but it couldn't get applied as the
-        // widget hasn't been realized yet.
-        m_delayedBackgroundColour = TRUE;
-        return TRUE;
-    }
-    else
+    if (colour.Ok())

     {
     {

-        GtkSetBackgroundColour( colour );
+        // We need the pixel value e.g. for background clearing.
+        m_backgroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));

     }
 
     }
 

-    return TRUE;
-}
-
-void wxWindowGTK::GtkSetForegroundColour( const wxColour &colour )
-{
-    GdkWindow *window = (GdkWindow*) NULL;
-    if (m_wxwindow)
-        window = GTK_PIZZA(m_wxwindow)->bin_window;
-    else
-        window = GetConnectWidget()->window;
-
-    wxASSERT( window );
+    // apply style change (forceStyle=true so that new style is applied
+    // even if the bg colour changed from valid to wxNullColour):
+    ApplyWidgetStyle(true);

 
 

-    ApplyWidgetStyle();
+    return true;

 }
 
 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
 }
 
 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )


@@ -4045,30 +3988,20 @@ bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
 
     if (!wxWindowBase::SetForegroundColour(colour))
     {
 
     if (!wxWindowBase::SetForegroundColour(colour))
     {

-        // don't leave if the GTK widget has just
-        // been realized
-        if (!m_delayedForegroundColour) return FALSE;
-    }
-
-    GdkWindow *window = (GdkWindow*) NULL;
-    if (m_wxwindow)
-        window = GTK_PIZZA(m_wxwindow)->bin_window;
-    else
-        window = GetConnectWidget()->window;
-
-    if (!window)
-    {
-        // indicate that a new style has been set
-        // but it couldn't get applied as the
-        // widget hasn't been realized yet.
-        m_delayedForegroundColour = TRUE;
+        return false;

     }
     }

-    else
+    
+    if (colour.Ok())

     {
     {

-       GtkSetForegroundColour( colour );
+        // We need the pixel value e.g. for background clearing.
+        m_foregroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));

     }
 
     }
 

-    return TRUE;
+    // apply style change (forceStyle=true so that new style is applied
+    // even if the bg colour changed from valid to wxNullColour):
+    ApplyWidgetStyle(true);
+
+    return true;

 }
 
 #ifdef __WXGTK20__
 }
 
 #ifdef __WXGTK20__


@@ -4086,18 +4019,19 @@ PangoContext *wxWindowGTK::GtkGetPangoX11Context()
 }
 #endif
  
 }
 #endif
  

-GtkRcStyle *wxWindowGTK::CreateWidgetStyle()
+GtkRcStyle *wxWindowGTK::CreateWidgetStyle(bool forceStyle)

 {
     // do we need to apply any changes at all?
 {
     // do we need to apply any changes at all?

-    if ( !m_hasFont && !m_hasFgCol &&
-         (!m_hasBgCol || !m_backgroundColour.Ok()) )
+    if ( !forceStyle &&
+         !m_font.Ok() &&
+         !m_foregroundColour.Ok() && !m_backgroundColour.Ok() )

     {
         return NULL;
     }
 
     GtkRcStyle *style = gtk_rc_style_new();
 
     {
         return NULL;
     }
 
     GtkRcStyle *style = gtk_rc_style_new();
 

-    if ( m_hasFont )
+    if ( m_font.Ok() )

     {
 #ifdef __WXGTK20__
         style->font_desc = 
     {
 #ifdef __WXGTK20__
         style->font_desc = 


@@ -4108,41 +4042,41 @@ GtkRcStyle *wxWindowGTK::CreateWidgetStyle()
 #endif
     }
 
 #endif
     }
 

-    if ( m_hasFgCol )
+    if ( m_foregroundColour.Ok() )

     {
     {

-        m_foregroundColour.CalcPixel( gtk_widget_get_colormap( m_widget ) );
+        GdkColor *fg = m_foregroundColour.GetColor();

         
         

-        style->fg[GTK_STATE_NORMAL] = *m_foregroundColour.GetColor();
+        style->fg[GTK_STATE_NORMAL] = *fg;

         style->color_flags[GTK_STATE_NORMAL] = GTK_RC_FG;
         
         style->color_flags[GTK_STATE_NORMAL] = GTK_RC_FG;
         

-        style->fg[GTK_STATE_PRELIGHT] = *m_foregroundColour.GetColor();
+        style->fg[GTK_STATE_PRELIGHT] = *fg;

         style->color_flags[GTK_STATE_PRELIGHT] = GTK_RC_FG;
         
         style->color_flags[GTK_STATE_PRELIGHT] = GTK_RC_FG;
         

-        style->fg[GTK_STATE_ACTIVE] = *m_foregroundColour.GetColor();
+        style->fg[GTK_STATE_ACTIVE] = *fg;

         style->color_flags[GTK_STATE_ACTIVE] = GTK_RC_FG;
     }
 
         style->color_flags[GTK_STATE_ACTIVE] = GTK_RC_FG;
     }
 

-    if ( m_hasBgCol && m_backgroundColour.Ok() )
+    if ( m_backgroundColour.Ok() )

     {
     {

-        m_backgroundColour.CalcPixel( gtk_widget_get_colormap( m_widget ) );
-        
-        style->bg[GTK_STATE_NORMAL] = *m_backgroundColour.GetColor();
-        style->base[GTK_STATE_NORMAL] = *m_backgroundColour.GetColor();
+        GdkColor *bg = m_backgroundColour.GetColor();
+
+        style->bg[GTK_STATE_NORMAL] = *bg;
+        style->base[GTK_STATE_NORMAL] = *bg;

         style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_NORMAL] | GTK_RC_BG | GTK_RC_BASE);
         
         style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_NORMAL] | GTK_RC_BG | GTK_RC_BASE);
         

-        style->bg[GTK_STATE_PRELIGHT] = *m_backgroundColour.GetColor();
-        style->base[GTK_STATE_PRELIGHT] = *m_backgroundColour.GetColor();
+        style->bg[GTK_STATE_PRELIGHT] = *bg;
+        style->base[GTK_STATE_PRELIGHT] = *bg;

         style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_PRELIGHT] | GTK_RC_BG | GTK_RC_BASE);
         
         style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_PRELIGHT] | GTK_RC_BG | GTK_RC_BASE);
         

-        style->bg[GTK_STATE_ACTIVE] = *m_backgroundColour.GetColor();
-        style->base[GTK_STATE_ACTIVE] = *m_backgroundColour.GetColor();
+        style->bg[GTK_STATE_ACTIVE] = *bg;
+        style->base[GTK_STATE_ACTIVE] = *bg;

         style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_ACTIVE] | GTK_RC_BG | GTK_RC_BASE);
         
         style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_ACTIVE] | GTK_RC_BG | GTK_RC_BASE);
         

-        style->bg[GTK_STATE_INSENSITIVE] = *m_backgroundColour.GetColor();
-        style->base[GTK_STATE_INSENSITIVE] = *m_backgroundColour.GetColor();
+        style->bg[GTK_STATE_INSENSITIVE] = *bg;
+        style->base[GTK_STATE_INSENSITIVE] = *bg;

         style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_INSENSITIVE] | GTK_RC_BG | GTK_RC_BASE);
     }
         style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)
             (style->color_flags[GTK_STATE_INSENSITIVE] | GTK_RC_BG | GTK_RC_BASE);
     }


@@ -4150,10 +4084,26 @@ GtkRcStyle *wxWindowGTK::CreateWidgetStyle()
     return style;
 }
 
     return style;
 }
 

-void wxWindowGTK::ApplyWidgetStyle()
+void wxWindowGTK::ApplyWidgetStyle(bool forceStyle)
+{
+    GtkRcStyle *style = CreateWidgetStyle(forceStyle);
+    if ( style )
+    {
+        DoApplyWidgetStyle(style);
+        gtk_rc_style_unref(style);
+    }
+}
+
+void wxWindowGTK::DoApplyWidgetStyle(GtkRcStyle *style)

 {
 {

+    if (m_wxwindow)
+        // should we also do m_widget in this case?
+        gtk_widget_modify_style(m_wxwindow, style);
+    else
+        gtk_widget_modify_style(m_widget, style);

 }
 
 }
 

+

 //-----------------------------------------------------------------------------
 // Pop-up menu stuff
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // Pop-up menu stuff
 //-----------------------------------------------------------------------------


@@ -4296,24 +4246,16 @@ bool wxWindowGTK::IsOwnGtkWindow( GdkWindow *window )
 
 bool wxWindowGTK::SetFont( const wxFont &font )
 {
 
 bool wxWindowGTK::SetFont( const wxFont &font )
 {

-    if (!wxWindowBase::SetFont(font) || !m_widget)
-    {
-        return FALSE;
-    }
+    wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid window") );

 
 

-    wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
-    if ( sysbg == m_backgroundColour )
-    {
-        m_backgroundColour = wxNullColour;
-        ApplyWidgetStyle();
-        m_backgroundColour = sysbg;
-    }
-    else
-    {
-        ApplyWidgetStyle();
-    }
+    if (!wxWindowBase::SetFont(font))
+        return false;

 
 

-    return TRUE;
+    // apply style change (forceStyle=true so that new style is applied
+    // even if the font changed from valid to wxNullFont):
+    ApplyWidgetStyle(true);    
+
+    return true;

 }
 
 void wxWindowGTK::DoCaptureMouse()
 }
 
 void wxWindowGTK::DoCaptureMouse()