wl_touch_listener.down

touch down event and beginning of a touch sequence

A new touch point has appeared on the surface. This touch point is assigned a unique @id. Future events from this touchpoint reference this ID. The ID ceases to be valid after a touch up event and may be re-used in the future.

struct wl_touch_listener

void function(void* data, wl_touch* wl_touch, uint serial, uint time, wl_surface* surface, int id, wl_fixed_t x, wl_fixed_t y) down;

wl_touch_listener.down

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