Obtains the location of the mouse pointer 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.
Obtains the location of the mouse pointer 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.