if ( cv->backimgs==NULL && !(GDrawHasCairo(cv->v)&gc_buildpath))
	    cv->backimgs = GDrawCreatePixmap(GDrawGetDisplayOfWindow(cv->v),cv->v,cv->width,cv->height);
	if ( GDrawHasCairo(cv->v)&gc_buildpath ) {
	    for ( layer = ly_back; layer<cv->b.sc->layer_cnt; ++layer ) if ( cv->b.sc->layers[layer].images!=NULL ) {
		if (( sf->multilayer && ((( cv->showback[0]&1 || cvlayer==layer) && layer==ly_back ) ||
			    ((cv->showfore || cvlayer==layer) && layer>ly_back)) ) ||
		    ( !sf->multilayer && (((cv->showfore && cvlayer==layer) && layer==ly_fore) ||
			    (((cv->showback[layer>>5]&(1<<(layer&31))) || cvlayer==layer) && layer!=ly_fore))) ) {
		    /* This really should be after the grids, but then it would completely*/
		    /*  hide them. */
		    DrawImageList(cv,pixmap,cv->b.sc->layers[layer].images);
		}
	    }
	    cv->back_img_out_of_date = false;
	    if ( cv->showhhints || cv->showvhints || cv->showdhints || cv->showblues || cv->showfamilyblues)
		CVShowHints(cv,pixmap);
	} else if ( cv->back_img_out_of_date ) {
	    GDrawFillRect(cv->backimgs,NULL,view_bgcol);
	    if ( cv->showhhints || cv->showvhints || cv->showdhints || cv->showblues || cv->showfamilyblues)
		CVShowHints(cv,cv->backimgs);
	    for ( layer = ly_back; layer<cv->b.sc->layer_cnt; ++layer ) if ( cv->b.sc->layers[layer].images!=NULL ) {
		if (( sf->multilayer && ((( cv->showback[0]&1 || cvlayer==layer) && layer==ly_back ) ||
			    ((cv->showfore || cvlayer==layer) && layer>ly_back)) ) ||
		    ( !sf->multilayer && (((cv->showfore && cvlayer==layer) && layer==ly_fore) ||
			    (((cv->showback[layer>>5]&(1<<(layer&31))) || cvlayer==layer) && layer!=ly_fore))) ) {
		    /* This really should be after the grids, but then it would completely*/
		    /*  hide them. */
		    if ( cv->back_img_out_of_date )
			DrawImageList(cv,cv->backimgs,cv->b.sc->layers[layer].images);
		}
	    }
	    cv->back_img_out_of_date = false;
	}
	if ( cv->backimgs!=NULL ) {
	    GRect r;
	    r.x = r.y = 0; r.width = cv->width; r.height = cv->height;
	    GDrawDrawPixmap(pixmap,cv->backimgs,&r,0,0);
	} else if ( !(GDrawHasCairo(cv->v)&gc_buildpath) &&
		( cv->showhhints || cv->showvhints || cv->showdhints || cv->showblues || cv->showfamilyblues)) {
	    /* if we've got bg images (and we're showing them) then the hints live in */
	    /*  the bg image pixmap (else they get overwritten by the pixmap) */
	    CVShowHints(cv,pixmap);
	}