Window.invalidateRect

void invalidateRect(gdk.rectangle.Rectangle rect, bool invalidateChildren)

A convenience wrapper around [gdk.window.Window.invalidateRegion] which invalidates a rectangular region. See [gdk.window.Window.invalidateRegion] for details.

Parameters

`rect`	rectangle to invalidate or null to invalidate the whole window
`invalidateChildren`	whether to also invalidate child windows