wl_output_listener.geometry

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
struct wl_output_listener
extern (C) @nogc nothrow
void function(void* data, wl_output* wl_output, int x, int y, int physical_width, int physical_height, int subpixel, const(char)* make, const(char)* model, int transform) geometry;

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