1.1 --- a/src/cwin.cc	Sat Jan 30 07:48:51 2016 +0200
     1.2 +++ b/src/cwin.cc	Sat Jan 30 07:58:07 2016 +0200
     1.3 @@ -36,8 +36,10 @@
     1.4  		return;
     1.5  	}
     1.6  
     1.7 +	XGetWindowAttributes(dpy, cwin->xwin, &cwin->attr);
     1.8 +
     1.9  	// create the damage structure to track dirty regions in this window
    1.10 -	if(!cwin->damage) {
    1.11 +	if(!cwin->damage && cwin->attr.c_class != InputOnly) {
    1.12  		cwin->damage = XDamageCreate(dpy, cwin->xwin, XDamageReportNonEmpty);
    1.13  	}
    1.14