win32: retry loop when calling OpenClipboard()
@malureau
Submitted by Marc-André Lureau Assigned to gtk-win32 maintainers
Link to original bug (#706610)
Description
The msdn page says: "OpenClipboard fails if another window has the clipboard open". And there doesn't seem to be any event when the clipboard is free again. Since multiple applications may watch and open it simultaneously, it is easy to reach this error. So do a best effort with a horrible blocking retry loop...