func copyVariant(p *syscall.Proc, source *types.Variant) (destination *types.Variant, err error) {
err = errors.HResultToError(p.Call(
uintptr(unsafe.Pointer(&destination)),
uintptr(unsafe.Pointer(source))))
return
}
func setStdHandle(ph *syscall.Proc, stdhandle int32, handle syscall.Handle) error {
r0, _, e1 := syscall.Syscall(ph.Addr(), 2, uintptr(stdhandle), uintptr(handle), 0)
if r0 == 0 {
if e1 != 0 {
return error(e1)
}
return syscall.EINVAL
}
return nil
}
func classIDFromProgramIDHelper(p *syscall.Proc, programID string) (classID *GUID, err error) {
ptrProgramID, err := windows.UTF16PtrFromString(programID)
if err != nil {
return
}
err = HResultToError(p.Call(
uintptr(unsafe.Pointer(ptrProgramID)),
uintptr(unsafe.Pointer(&classID))))
return
}