+#include "wx/notebook.h"
+#include "wx/tabctrl.h"
+
+
+static wxBrush MacGetBackgroundBrush( wxWindow* window )
+{
+ wxBrush bkdBrush = window->MacGetBackgroundBrush() ;
+#if !TARGET_API_MAC_OSX
+ // transparency cannot be handled by the OS when not using composited windows
+ wxWindow* parent = window->GetParent() ;
+ // if we have some 'pseudo' transparency
+ if ( ! bkdBrush.Ok() || bkdBrush.GetStyle() == wxTRANSPARENT || window->GetBackgroundColour() == wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE ) )
+ {
+ // walk up until we find something
+ while( parent != NULL )
+ {
+ if ( parent->GetBackgroundColour() != wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE ) )
+ {
+ // if we have any other colours in the hierarchy
+ bkdBrush.SetColour( parent->GetBackgroundColour() ) ;
+ break ;
+ }
+ if ( parent->IsKindOf( CLASSINFO(wxTopLevelWindow) ) )
+ {
+ bkdBrush = parent->MacGetBackgroundBrush() ;
+ break ;
+ }
+ if ( parent->IsKindOf( CLASSINFO( wxNotebook ) ) || parent->IsKindOf( CLASSINFO( wxTabCtrl ) ) )
+ {
+ Rect extent = { 0 , 0 , 0 , 0 } ;
+ int x , y ;
+ x = y = 0 ;
+ wxSize size = parent->GetSize() ;
+ parent->MacClientToRootWindow( &x , &y ) ;
+ extent.left = x ;
+ extent.top = y ;
+ extent.top-- ;
+ extent.right = x + size.x ;
+ extent.bottom = y + size.y ;
+ bkdBrush.MacSetThemeBackground( kThemeBackgroundTabPane , (WXRECTPTR) &extent ) ;
+ break ;
+ }
+
+ parent = parent->GetParent() ;
+ }
+ }
+ if ( !bkdBrush.Ok() || bkdBrush.GetStyle() == wxTRANSPARENT )
+ {
+ // if we did not find something, use a default
+ bkdBrush.MacSetTheme( kThemeBrushDialogBackgroundActive ) ;
+ }
+#endif
+ return bkdBrush ;
+}
+