I may have discovered an issue with the clipboard on Linux/GTK2. My
application updates a paste button and menu item via an action that
updates on idle by calling Clipboard.HasFormat(CF_TEXT). Pasting is
intermittently failing/hanging for 10 seconds, and I think the issue is
that the Clipboard.HasFormat routine is reentered. Clipboard.HasFormat
can call Application.ProcessMessages, and a possible failure path seems
to be that a Ctrl+V arrives during this call of ProcessMessages, and in
handling this Clipboard.HasFormat is called, and the routine seems to
have nothing to protect against reentry.
Two Ctrl+V's in quick succession could potentially trigger then same
issue, if the clipboard contents are large.
Have I misunderstood something? I couldn't see anything in the bug
tracker about this, though there is a reported issue about large pastes.
I can't see any obvious fix at the application level other than leaving
the paste items permanently enabled.
I think this is not an issue in MS Windows as I don't think the
clipboard requires communication with another process.
Colin
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