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GetSystemMetrics(SM_MOUSEWHEELPRESENT) returns 0 in remote desktop session in Windows 8.1 or Windows Server 2012 R2

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Symptoms

Assume that you have an application that is running in a remote desktop session in Windows 8.1 or in Windows Server 2012 R2. The application calls
GetSystemMetrics(SM_MOUSEWHEELPRESENT) to check whether a mouse wheel is present on an attached mouse device. In this situation, Windows will always return 0 because the Remote Desktop service reports that a 2-button mouse is attached that does not include a mouse wheel. 

This can affect applications that rely upon GetSystemMetrics when it determines whether to process mouse wheel input. 

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More Information

Applications can call GetSystemMetrics together with the SM_MOUSEWHEELPRESENT flag to check whether a mouse wheel is present on an attached mouse device. GetSystemMetrics returns a nonzero value if a mouse device that includes a mouse wheel is installed. Otherwise, the function returns zero.

Applications or third-party controls that call GetSystemMetrics(SM_MOUSEWHEELPRESENT) to determine whether a mouse wheel is present may not process mouse wheel input when GetSystemMetrics reports that a mouse wheel is not present. These applications or third-party controls can be updated to process mouse wheel input regardless of whether GetSystemMetrics reports that a mouse wheel is present.

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Article Info
Article ID : 3015033
Revision : 1
Created on : 1/7/2017
Published on : 11/28/2014
Exists online : False
Views : 354