Function CreateStdAccessibleProxyW 

pub unsafe fn CreateStdAccessibleProxyW<P1>(
    hwnd: HWND,
    pclassname: P1,
    idobject: i32,
    riid: *const GUID,
    ppvobject: *mut *mut c_void,
) -> Result<()>
where
    P1: Param<PCWSTR>,