## Using Your DDK

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### Virtual Mouse Driver

Driver Description:

The Virtual Mouse Driver is responsible for all mouse support in the Multiple DOS Sessions environment. Its most common services are available through the INT 33H interface. The virtual mouse driver also supports applications that use the BIOS INT 15H (AH=C2H) pointing-device services.

Compilers/Assemblers Required:

         Microsoft MASM 5.1      (supplied with the DDK)
         Microsoft CL386         (supplied with the DDK)

Build Instructions:

1.Set the environment variables so the correct tools are picked up during the build.

    e.g., SET PATH=<drive>:\DDK\TOOLS;%PATH%

Where <drive> represents your DDK installed drive and DDK represents the DDK installed directory. On the CD-ROM, the TOOLS directory path is DDK\ TOOLS.

2.Change the directory to DDK\BASE\SRC\VDEV\VMOUSE.

3.Invoke NMAKE on the resident makefile.

Files Created by Successful Build:

         Directory:  \DDK\BASE\SRC\VDEV\VMOUSE

         o  VMOUSE.SYS
         o  VMOUSED.SYS