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WM_QUEUESYNC Overview  Group

The WM_QUEUESYNC message is sent by a computer-based training (CBT) application to separate user-input messages from other messages sent through the WH_JOURNALPLAYBACK hook procedure.


wParam = 0; // not used, must be zero 

lParam = 0; // not used, must be zero 



This message has no parameters.

Return Values

A CBT application should return zero if it processes this message.


Whenever a CBT application uses the WH_JOURNALPLAYBACK hook procedure, the first and last messages are WM_QUEUESYNC. This allows the CBT application to intercept and examine user-initiated messages without doing so for events that it sends.

If an application specifies a NULL window handle, the message is posted to the message queue of the active window.

file: /Techref/os/win/api/win32/mess/src/msg27_13.htm, 1KB, , updated: 2000/4/7 12:20, local time: 2024/7/18 10:39,

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