XCB_RENDER_PICT_OP_DARKEN

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
alias XCB_RENDER_PICT_OP_DARKEN = xcb_render_pict_op_t.XCB_RENDER_PICT_OP_DARKEN

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