Fix setting fonts and colours for wxToggleButton with bitmaps in wxGTK.

Apply the fixes of r54138 to wxToggleButton too, the problem of #3939 was not
specific to just plain wxButtons.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75643 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -599,6 +599,7 @@ wxGTK:
 - Fix mouse wheel scrolling in wxListCtrl broken just before 3.0.0.
 - Fix memory leak in wxSocket.
 - Fix raw access to wxBitmap pixels after drawing on it using wxMemoryDC.
+- Fix setting font and colours of wxToggleButtons with images.
 
 wxMSW:
 

src/gtk/tglbtn.cpp

@@ -22,6 +22,7 @@
 
 #include <gtk/gtk.h>
 #include "wx/gtk/private.h"
+#include "wx/gtk/private/list.h"
 
 extern bool      g_blockEventsOnDrag;
 
@@ -213,7 +214,23 @@ GtkLabel *wxToggleButton::GTKGetLabel() const
 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 {
     GTKApplyStyle(m_widget, style);
-    GTKApplyStyle(gtk_bin_get_child(GTK_BIN(m_widget)), style);
+    GtkWidget* child = gtk_bin_get_child(GTK_BIN(m_widget));
+    GTKApplyStyle(child, style);
+
+    // for buttons with images, the path to the label is (at least in 2.12)
+    // GtkButton -> GtkAlignment -> GtkHBox -> GtkLabel
+    if ( GTK_IS_ALIGNMENT(child) )
+    {
+        GtkWidget* box = gtk_bin_get_child(GTK_BIN(child));
+        if ( GTK_IS_BOX(box) )
+        {
+            wxGtkList list(gtk_container_get_children(GTK_CONTAINER(box)));
+            for (GList* item = list; item; item = item->next)
+            {
+                GTKApplyStyle(GTK_WIDGET(item->data), style);
+            }
+        }
+    }
 }
 
 // Get the "best" size for this control.