Allocate and initialize the two-finger pan gesture structure.
gesture_tfpan_t* tfpan_gesture_alloc(tfpan_params_t *params,
gesture_callback_f callback,
struct gestures_set *set)
A pointer to the two-finger pan gesture parameters.
The function to invoke when the two-finger pan gesture changes state.
A pointer to the gesture set to add this two-finger pan gesture to.
This function allocates a new two-finger pan gesture data structure, initializes it with the specified parameters and callback function, and adds it to the specified gesture set.
A pointer to an initialized two-finger pan gesture.