Enables or disables multiple pointer awareness. If this setting is %TRUE,
@widget will start receiving multiple, per device enter/leave events. Note
that if custom #GdkWindows are created in #GtkWidget::realize,
gdk_window_set_support_multidevice() will have to be called manually on them.
Enables or disables multiple pointer awareness. If this setting is %TRUE, @widget will start receiving multiple, per device enter/leave events. Note that if custom #GdkWindows are created in #GtkWidget::realize, gdk_window_set_support_multidevice() will have to be called manually on them.