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. For putlclip/getclip, the following command outputs nothing in a few attempts. ("ABCD" is lost.) $ echo ABCD |putclip; for a in `seq 100`; do getclip |putclip; done; getclip $ Solutions: This can be solved by passing non-zero HWND to OpenClipboard(). Therefore, as for mintty, the following patch is ok I think. diff --git a/src/winclip.c b/src/winclip.c index 12c54525..a7cbe365 100644 --- a/src/winclip.c +++ b/src/winclip.c @@ -1324,7 +1324,7 @@ static void do_win_paste(bool do_path) { //printf("OpenClipboard win_paste\n"); - if (!OpenClipboard(null)) + if (!OpenClipboard(wnd)) return; if (cfg.input_clears_selection) However, for /dev/clipbard and {put|get}clip, there is no suitable HWND to pass to OpenClipboard(). Fortunately, I found the patch attached solves the /dev/clipboard issue. This is not smart, however it works. I think similar patch is ok for putclip/getclip. Any suggestions and comments will be appreciated. -- Takashi Yano <[email protected]>
0001-Cygwin-clipboard-Add-workaround-for-ERROR_CLIPBOARD_.patch
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