When listening to mouse events using attributes like Area.MouseLeft
or Area.MouseMove you can use this attribute to set whether or not
the mouse events should also be captured when the mouse cursor is outside
the widget's boundaries. For example, mouse button events won't trigger if
the mouse button is released when the cursor is outside the widget's
boundaries. You can change this behaviour by setting Area.MouseCapture
to True.
Note that this attribute is currently only implemented for classes Image and
Scrollcanvas.