SAMPLE: User Interaction w/ a VxD Using Message Mode Services

 Last reviewed: October 16, 1997
Article ID: Q77403
3.00 3.10 WINDOWS kbprg kbfile

The information in this article applies to:

  • Microsoft Windows Device Driver Kit (DDK) for Windows versions 3.0 and 3.1

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.

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

MSGMODE is a file in the Software Library that contains a sample virtual device that demonstrates using 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.

Download MSGMODE.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download MSGMODE.EXE (size: 24721 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \softlib\mslfiles directory
      Get MSGMODE.EXE (size: 24721 bytes)

Additional reference words: 3.00 3.10 DDKVXD softlib MSGMODE.EXE
KBCategory: kbprg kbfile
KBSubcategory: DthreeVddMsgmode
Keywords : DthreeVddMsgmode kbfile kbprg
Version : 3.00 3.10
Platform : WINDOWS

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Last reviewed: October 16, 1997
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