Handling Errors with Audio Functions

The waveform-audio and auxiliary-audio functions return a nonzero value when an error occurs. Windows provides functions that convert these error values into textual descriptions of the errors. The application must still examine the error values to determine how to proceed, but textual descriptions of errors can be used in dialog boxes that describe errors to users.

You can use the following functions to retrieve textual descriptions of audio error values:

The only audio functions that do not return error values are auxGetNumDevs,  waveInGetNumDevs, and waveOutGetNumDevs. These functions return zero if no devices are present in a system or if they encounter any errors.