XCB_XV_GRAB_PORT_STATUS_ALREADY_GRABBED

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_XV_GRAB_PORT_STATUS_ALREADY_GRABBED = xcb_xv_grab_port_status_t.XCB_XV_GRAB_PORT_STATUS_ALREADY_GRABBED

Meta