GetMessageExtraInfo function (winuser.h)
Retrieves the extra message information for the current thread. Extra message information is an application- or driver-defined value associated with the current thread's message queue.
Syntax
LPARAM GetMessageExtraInfo();
Return value
Type: LPARAM
The return value specifies the extra information. The meaning of the extra information is device specific.
Remarks
To set a thread's extra message information, use the SetMessageExtraInfo function.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | winuser.h (include Windows.h) |
| Library | User32.lib |
| DLL | User32.dll |
| API set | ext-ms-win-ntuser-window-l1-1-4 (introduced in Windows 10, version 10.0.14393) |
See also
Conceptual
Reference