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GetMessageExtraInfo function

Applies to: desktop apps only

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

Copy 
LPARAM WINAPI GetMessageExtraInfo(void);

Parameters

This function has no parameters.

Return value

Type:

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

Minimum supported client

Windows 2000 Professional

Minimum supported server

Windows 2000 Server

Header
Winuser.h (include Windows.h)

Library
User32.lib

DLL
User32.dll

See also

Reference
GetMessage
PeekMessage
SetMessageExtraInfo
Conceptual
Messages and Message Queues

 

 

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Build date: 2/3/2012

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C# syntax 
[DllImport("user32.dll", CharSet=CharSet.Auto)]
internal static extern IntPtr GetMessageExtraInfo();
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vb.net syntax 
<DllImport("user32.dll", CharSet:=CharSet.Auto)> _
Public Shared Function GetMessageExtraInfo() As IntPtr
End Function
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