void CWindowMaskGUI::update_preview()
{
+ unlock_window();
CWindowGUI *cgui = mwindow->cwindow->gui;
cgui->lock_window("CWindowMaskGUI::update_preview");
cgui->sync_parameters(CHANGE_PARAMS, 0, 1);
cgui->unlock_window();
+ lock_window("CWindowMaskGUI::update_preview");
}