GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
gtk_widget_grab_default( m_widget );
// resize for default border
gtk_button_style_set_callback( m_widget, NULL, this );
GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
gtk_widget_grab_default( m_widget );
// resize for default border
gtk_button_style_set_callback( m_widget, NULL, this );