Method
GtkGestureStylusget_backlog
Declaration [src]
gboolean
gtk_gesture_stylus_get_backlog (
GtkGestureStylus* gesture,
GdkTimeCoord** backlog,
guint* n_elems
)
Description [src]
Returns the accumulated backlog of tracking information.
By default, GTK will limit rate of input events. On stylus input where accuracy of strokes is paramount, this function returns the accumulated coordinate/timing state before the emission of the current [Gtk.GestureStylus::motion] signal.
This function may only be called within a GtkGestureStylus::motion
signal handler, the state given in this signal and obtainable through
gtk_gesture_stylus_get_axis() express the latest (most up-to-date)
state in motion history.
The backlog is provided in chronological order.
Parameters
backlog-
Type: An array of
GdkTimeCoord*Coordinates and times for the backlog events.
The argument will be set by the function. The length of the array is specified in the n_elemsargument.The caller of the method takes ownership of the returned data, and is responsible for freeing it. n_elems-
Type:
guint*Return location for the number of elements.
The argument will be set by the function.