It is the same old song: absense of centralized event handling in Linux.
In Windows, the main thread waits with MsgWaitForMultipleObjects, so
it remains capable of processing messages, no matter where they come
from.
In the current trunk version Sending a Message to the main thread and
handling it with "procedure...message" does not work any more in Linux.
I'm sure it did work with some previous version. With that thread
generated events could be used in a GUI program.
I thought, TThread.Waitfor would (should) be implemented using this
mechanism (e.g doing a loop with "Application.PreocessMessages"). With
that it would not be blocking other event handlers. But Maybe I'm wrong
and TThread.Waitfor in fact should block the main thread event handlers...
-Michael
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