wl_data_device_listener.enter

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
struct wl_data_device_listener
extern (C) @nogc nothrow
void function(void* data, wl_data_device* wl_data_device, uint serial, wl_surface* surface, wl_fixed_t x, wl_fixed_t y, wl_data_offer* id) enter;

Meta