MWindow *mwindow = plugin->server->mwindow;
CWindowGUI *cwindow_gui = mwindow->cwindow->gui;
CWindowCanvas *canvas = cwindow_gui->canvas;
MWindow *mwindow = plugin->server->mwindow;
CWindowGUI *cwindow_gui = mwindow->cwindow->gui;
CWindowCanvas *canvas = cwindow_gui->canvas;