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messageprocessing
About this tag
The messageprocessing tag covers discussions about how Windows handles message queues, particularly the behavior of GetMessage during WinEvent callbacks. A recurring theme is that posted messages may be ignored or delayed while a callback executes, with messages only being received once another message enters the queue. This tag is relevant for developers working with Windows messaging, event hooks, and thread synchronization.
GetMessage appears not to receive messages that are posted while a WinEvent callback function is being executed. If another message enters the queue, both messages will be received and processed.
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