This sample (AVCINST) explains how an application can install and remove an I/O procedure to use multimedia input/output (MMIO) file services. The AVC I/O Procedure Installation Sample is a simple PM application that allows you to install or deinstall the audio AVC I/O procedure, AVCAPROC.DLL.
Note: This sample shows the installation and removal of a system-defined I/O procedure. Typically, you would install a custom I/O procedure that was not built into the MMPMMMIO.INI file during installation.