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Q77403: MsgMode.exe Uses Message Mode Services & VMM w/VxD

Article: Q77403
Product(s): Microsoft Windows Device Driver Kit
Version(s): 3.0,3.1
Operating System(s): 
Keyword(s): kbfile kb16bitonly kbDDK kbOSWin300
Last Modified: 10-DEC-1999

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The information in this article applies to:

- Microsoft Windows Device Development Kit (DDK) for Windows, versions 3.0, 3.1 
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SUMMARY
=======

MsgMode.exe is a sample virtual device that demonstrates how to use the message
mode services and the virtual machine manager (VMM) Time Out services. MSGMODE
uses the VMM Hook_Device_Service to detect keyboard and mouse activity.

MORE INFORMATION
================

The following files are available for download from the Microsoft Download
Center:

MsgMode.exe

For additional information about how to download Microsoft Support files, click
the article number below to view the article in the Microsoft Knowledge Base:

  Q119591 How to Obtain Microsoft Support Files from Online Services

Microsoft used the most current virus detection software available on the date of
posting to scan this file for viruses. Once posted, the file is housed on secure
servers that prevent any unauthorized changes to the file.


Under Microsoft Windows enhanced mode, a virtual device (VxD) can use the virtual
keyboard device (VKD) and virtual display device (VDD) message mode services to
provide user interaction. These services are especially useful to programs that
implement security systems where the user is required to enter a password before
any further operation can proceed.

REFERENCES
==========

The VKD and VDD message mode services are documented in the Microsoft Windows
Device Driver Kit "Virtual Device Adaptation Guide."

Additional query words:

======================================================================
Keywords          : kbfile kb16bitonly kbDDK kbOSWin300 
Technology        : kbAudDeveloper kbWin3xSearch kbWinDDKSearch kbWinDDK300 kbWinDDK310
Version           : :3.0,3.1

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