Returns the `GdkDeviceTool` currently driving input through this gesture.
This function must be called from the handler of one of the [signal@Gtk.GestureStylus:GtkGestureStylus:down
], [
signal@Gtk.GestureStylus:GtkGestureStylus:motion
], [signal@Gtk.GestureStylus:GtkGestureStylus:up
] or [
signal@Gtk.GestureStylus:GtkGestureStylus:proximity
] signals.
this |
a `GtkGestureStylus` |
The current stylus tool |