Waveform Audio Reference

[The feature associated with this page, Waveform Audio, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. WASAPI and Audio Graphs have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use WASAPI and Audio Graphs instead of Waveform Audio, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

This section lists the functions, structures, and messages associated with waveform audio, which are documented under Multimedia Reference. These elements are grouped as follows.

Auxiliary Devices

• AUXCAPS
• auxGetDevCaps
• auxGetNumDevs
• auxGetVolume
• auxOutMessage
• auxSetVolume

Easy Playback

• PlaySound
• sndPlaySound

Errors

• waveInGetErrorText
• waveOutGetErrorText

Opening and Closing

• PCMWAVEFORMAT
• MM_WIM_CLOSE
• MM_WIM_OPEN
• MM_WOM_CLOSE
• MM_WOM_OPEN
• WAVEFORMAT
• WAVEFORMATEX
• waveInClose
• waveInProc
• waveInOpen
• waveOutClose
• waveOutProc
• waveOutOpen
• WIM_CLOSE
• WIM_OPEN
• WOM_CLOSE
• WOM_OPEN

Pitch

• waveOutGetPitch
• waveOutSetPitch

Playback Rate

• waveOutGetPlaybackRate
• waveOutSetPlaybackRate

Playback Progress

• MM_WOM_DONE
• waveOutBreakLoop
• waveOutPause
• waveOutReset
• waveOutRestart
• WOM_DONE

Playing

• MM_WOM_DONE
• WAVEHDR
• waveOutPrepareHeader
• waveOutUnprepareHeader
• waveOutWrite
• WOM_DONE

Querying a Device

• WAVEINCAPS
• waveInGetDevCaps
• waveInGetNumDevs
• WAVEOUTCAPS
• waveOutGetDevCaps
• waveOutGetNumDevs

Recording

• MM_WIM_DATA
• waveInAddBuffer
• waveInPrepareHeader
• waveInReset
• waveInStart
• waveInStop
• waveInUnprepareHeader
• WIM_DATA

Retrieving Device Identifiers

• waveInGetID
• waveOutGetID

Retrieving the Current Position

• waveInGetPosition
• waveOutGetPosition

Sending Custom Messages

• waveInMessage
• waveOutMessage

Volume

• waveOutGetVolume
• waveOutSetVolume

Related topics

Waveform Audio