support mnemonics for wxStatic/RadioBox and made it easier to add support for more controls by virtualizing the mnemonics support logic (patch 1448178)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38027 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/stattext.cpp

@@ -166,6 +166,16 @@ bool wxStaticText::SetForegroundColour(const wxColour& colour)
     return true;
 }
 
+bool wxStaticText::GTKWidgetNeedsMnemonic() const
+{
+    return true;
+}
+
+void wxStaticText::GTKWidgetDoSetMnemonic(GtkWidget* w)
+{
+    gtk_label_set_mnemonic_widget(GTK_LABEL(m_widget), w);
+}
+
 // static
 wxVisualAttributes
 wxStaticText::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))