Function QueryActCtxW 

pub unsafe extern "system" fn QueryActCtxW(
    dwflags: u32,
    hactctx: HANDLE,
    pvsubinstance: *const c_void,
    ulinfoclass: u32,
    pvbuffer: *mut c_void,
    cbbuffer: usize,
    pcbwrittenorrequired: *mut usize,
) -> BOOL