clear clipboard Error in clipboard_windows.go

[MangataTS]

problem

When I repeatedly read the clipboard and then clear the clipboard, the clipping operation fails and the content cannot be read.

solved

I guessed that the problem might be that I used the writeAll function and passed in an empty string, so I added a new function: clearAll

func clearAll() error {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	err := waitOpenClipboard()
	if err != nil {
		return err
	}

	r, _, err := emptyClipboard.Call(0)
	_, _, _ = closeClipboard.Call()
	if r == 0 {
		return err
	}
	return nil
}