Returns TRUE if 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 gtk_device_grab_add().
a GdkDevice
TRUE if there is an ongoing grab on device by another GtkWidget than widget. Since 3.0
See Implementation
Returns TRUE if 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 gtk_device_grab_add().