gdk:window-begin-paint-rect (window rectangle)

window -- a gdk:window object
rectangle -- a gdk:rectangle instance you intend to draw to

A convenience wrapper around the gdk:window-begin-paint-region function which creates a rectangular region for you. See the gdk:window-begin-paint-region function for details. The gdk:window-begin-paint-rect function has been deprecated since version 3.22 and should not be used in newly written code. Use the gdk:window-begin-draw-frame function instead.