return UTF16ToString(b[:l]), nil
		}
		n = l
	}
}

// GetWindowsDirectory retrieves the path to current location of the Windows
// directory, which is typically, though not always, `C:\Windows`. This may
// be a private user directory in the case that the application is running
// under a terminal server.
func GetWindowsDirectory() (string, error) {
	n := uint32(MAX_PATH)
	for {
		b := make([]uint16, n)

	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

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