Re: General clipboard issue on cygwin (mintty, putclip, getclip, /dev/clipboard)
Takashi Yano via Cygwin <[email protected]>
| Newsgroups | gmane.os.cygwin |
|---|---|
| Message-ID | <[email protected]> |
Hi Thomas, On Wed, 25 Feb 2026 05:18:34 +0100 Thomas Wolff wrote: > Am 24.02.2026 um 02:36 schrieb Takashi Yano: > > Hi, > > > > I encountered a clipboard issue common to cygwin. > > > > Affected components: > > /dev/clipboard, putclip/getclip, mintty > > > > The issue: > > If the clipbard is opened by `OpenClipboard(NULL)`, occasionally > > SetClipboardData() and GetClipboardData() fails with > > ERROR_CLIPBOARD_NOT_OPEN. > > > > When UltraVNC Viewer (https://uvnc.com/) is opened, this issue > > happens with a very high probability (> ~90%). > > > > $ echo AAAA > /dev/clipboard > > echo: write error: Permission denied > > > > On mintty, text selection by mouse and clicking center button > > fails at the first attempt. > According to Windows docs, OpenClipboard(0) would make SetClipboardData > fail. There is no such statement about reading from the clipboard. > Accordingly, mintty calls OpenClipbard(wnd) before writing to the > clipboard and (0) only before pasting. Also I'm not aware pasting ever > fails for me. But if there is a chance to fail, I'll add the (wnd) to > both other calls. Thanks. That's fine. > About the cygwin patch, could perhaps GetDesktopWindow help? I guess, I confirmed GetDesktopWindow() normally works. However, unfortunately, it does not work in ssh session even though it returns non-zero HWND. -- Takashi Yano <[email protected]> -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple