Computes the bounds for widget in the coordinate space of target.
The bounds of widget are (the bounding box of) the region that it is
expected to draw in. See the coordinate system
overview to learn more.
If the operation is successful, true is returned. If widget has no
bounds or the bounds cannot be expressed in target's coordinate space
(for example if both widgets are in different windows), false is
returned and bounds is set to the zero rectangle.
It is valid for widget and target to be the same widget.
Computes the bounds for widget in the coordinate space of target.
The bounds of widget are (the bounding box of) the region that it is expected to draw in. See the coordinate system overview to learn more.
If the operation is successful, true is returned. If widget has no bounds or the bounds cannot be expressed in target's coordinate space (for example if both widgets are in different windows), false is returned and bounds is set to the zero rectangle.
It is valid for widget and target to be the same widget.