wl_data_device_listener.motion

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 time, wl_fixed_t x, wl_fixed_t y) motion;

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