imagesetthickness Set the thickness for line drawing &reftitle.description; boolimagesetthickness resourceimage intthickness imagesetthickness sets the thickness of the lines drawn when drawing rectangles, polygons, ellipses etc. etc. to thickness pixels. &reftitle.parameters; &gd.image.description; thickness &reftitle.returnvalues; &return.success; &reftitle.notes; ¬e.gd.2;