pub unsafe extern "C" fn DispCallFunc(
pvInstance: *mut c_void,
oVft: ULONG_PTR,
cc: CALLCONV,
vtReturn: VARTYPE,
cActuals: UINT,
prgvt: *mut VARTYPE,
prgpvarg: *mut *mut VARIANTARG,
pvargResult: *mut VARIANT,
) -> HRESULT