Use InheritAttributes for wxGTK widgets so they will check

ShouldInheritColours.  Set wxButton to not inherit colours.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24702 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/slider.cpp

@@ -142,8 +142,7 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
     m_parent->DoAddChild( this );
 
     PostCreation();
-
-    SetBackgroundColour( parent->GetBackgroundColour() );
+    InheritAttributes();
 
     Show( TRUE );