gtk:widget-device-enabled (widget device)

widget -- a gtk:widget object
device -- a gdk:device object
enabled -- a boolean whether to enable the device

The gtk:widget-device-enabled function returns whether the device can interact with the widget and its children. The (setf gtk:widget-device-enabled) function enables or disables the device to interact with the widget and all its children.

It does so by descending through the gdk:window object hierarchy and enabling the same mask that is has for core events, that is, the one that the gdk:window-events function returns.