If the @gesture is active, this function returns %TRUE and fills in @x and @y with the coordinates of the current point, as an offset to the starting drag point.
X offset for the current point
Y offset for the current point
Return: %TRUE if the gesture is active
3.14
See Implementation
If the @gesture is active, this function returns %TRUE and fills in @x and @y with the coordinates of the current point, as an offset to the starting drag point.