Applies to: desktop apps only
Sent by a computer-based training (CBT) application to separate user-input messages from other messages sent through the WH_JOURNALPLAYBACK procedure.
#define WM_QUEUESYNC 0x0023
Parameters
- wParam
-
This parameter is not used.
- lParam
-
This parameter is not used.
Return value
Type: void
A CBT application should return zero if it processes this message.
Remarks
Whenever a CBT application uses the WH_JOURNALPLAYBACK 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.
Requirements
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Minimum supported client | Windows XP |
|---|---|
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Minimum supported server | Windows 2000 Server |
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Header |
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See also
- Reference
- JournalPlaybackProc
- SetWindowsHookEx
- Conceptual
- Hooks
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Build date: 2/3/2012