gtk:widget-device-is-shadowed (widget device)

widget -- a gtk:widget object
device -- a gdk:device object

True if there is an ongoing grab on device by another widget than widget.

Returns true if the device has been shadowed by a GTK device grab on another widget, so it would stop sending events to widget. This may be used in the "grab-notify" signal to check for specific devices. See the gtk:device-grab-add function.