r0, _, e1 := syscall.Syscall(procGetStdHandle.Addr(), 1, uintptr(stdhandle), 0, 0)
	handle = Handle(r0)
	if handle == InvalidHandle {
		err = errnoErr(e1)
	}
	return
}

func getSystemDirectory(dir *uint16, dirLen uint32) (len uint32, err error) {
	r0, _, e1 := syscall.Syscall(procGetSystemDirectoryW.Addr(), 2, uintptr(unsafe.Pointer(dir)), uintptr(dirLen), 0)
	len = uint32(r0)
	if len == 0 {