My point was that the difference did not seem to be relevant to the fundamental problem that nothing seems to happen when I call SendMessage(). As I said, I tried it and nothing happened with PostMessage() either. If neither solves my problem, the difference is academic.

... or am I missing something?

In reply to Re^4: Win32::GUI sending Windows messages between threads by Anonymous Monk
in thread Win32::GUI sending Windows messages between threads [solved] by shadrack

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