On 11/25/2011 10:35 AM, Hans-Peter Diettrich wrote:
So what happens on PostMessage, in detail when multiple threads post
messages at the same time?
With PostMessage, the events are queued one after the other and (some
days later) handled in the main thread in this sequence,
TWidgetSet.SendMessage and PostMessage are both documented as
thread-safe. Is this correct, and if so, how is that ensured?
Does a SendMessage call bypass any other messages which have been
queued until that time? (by dispatching the message immediately to the
target?)
AFAIK, SendMessage (like Dispatch) (at least when addressing a GUI
object) can only be used in the Main thread, as it (might) result din
just calling the appropriate (not thread safe) LCL function.
-Michael
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