Convenience function that calls Widget.queueDrawRegion on
the region created from the given coordinates.
The region here is specified in widget coordinates.
Widget coordinates are a bit odd; for historical reasons, they are
defined as widget->window coordinates for widgets that return TRUE for
Widget.getHasWindow, and are relative to widget->allocation.x,
widget->allocation.y otherwise.
width or height may be 0, in this case this function does
nothing. Negative values for width and height are not allowed.
Convenience function that calls Widget.queueDrawRegion on the region created from the given coordinates.
The region here is specified in widget coordinates. Widget coordinates are a bit odd; for historical reasons, they are defined as widget->window coordinates for widgets that return TRUE for Widget.getHasWindow, and are relative to widget->allocation.x, widget->allocation.y otherwise.
width or height may be 0, in this case this function does nothing. Negative values for width and height are not allowed.