## Using Your DDK

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### Sample Audio Mixer Application

Driver Description:

This source code provides you with a sample audio mixer. The application will work with sound cards that support the audio IOCtl functions described in the Multimedia Device Driver Reference. Refer to the README and MIXERBLD files in the source directory for additional information.

Compilers/Assemblers Required:

         IBM VisualAge C++ V3.0

Build Instructions:

1.Before the FIRST build is attempted, run the COPYVAC.CMD REXX command file located in the DDK\TOOLS directory. This command copies the set of files needed from your installed copy of the VisualAge C++ Compiler to the proper directories under the DDK directory.

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

    e.g., SET PATH=<drive>:\DDK\TOOLS;%PATH%
          SET HOST_PROC=386
          SET HOST_OS=OS2

Where <drive> represents the drive on which the DDK is installed and DDK represents the DDK installed directory.

3.Make sure you have the IBM VisualAge C++ compiler installed and that the environment variables are set correctly.

4.Change the directory to DDK\BASE\SRC\DEV\MME\WARPMIX\APPLETS\MIXER.

5.Invoke NMAKE on the resident makefile.

Files Created by Successful Build:

         Retail Version:
         Directory:  \DDK\BASE\SRC\DEV\MME\WARPMIX\APPLETS\MIXER

         o  WARPMIX.EXE