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waveInProc (Windows Embedded CE 6.0)

  • Article

1/6/2010

This function is the callback function used with the waveform-audio input device. This function is a placeholder for the application-defined function name. The address of this function can be specified in the callback-address parameter of the waveInOpen function.

Syntax

void CALLBACK waveInProc(
  HWAVEIN hwi,
  UINT uMsg,
  DWORD dwInstance,
  DWORD dwParam1,
  DWORD dwParam2
);

Parameters

  • hwi
    Handle to the waveform-audio device associated with the callback function.

  • uMsg
    Waveform-audio input message. It can be one of the messages shown in the following table.

    Message Description

    WIM_CLOSE

    Sent when the device is closed using the waveInClose function.

    WIM_DATA

    Sent when the device driver is finished with a data block sent using the waveInAddBuffer function.

    WIM_OPEN

    Sent when the device is opened using the waveInOpen function.
  • dwInstance
    User instance data specified with waveInOpen.
  • dwParam1
    Message parameter.
  • dwParam2
    Message parameter.

Return Value

None.

Remarks

Applications should not call any system-defined functions from inside a callback function, except for EnterCriticalSection, LeaveCriticalSection, OutputDebugString, PostMessage, PostThreadMessage, and SetEvent. Calling other wave functions will cause deadlock.

Requirements

Header mmsystem.h
Library coredll.lib
Windows Embedded CE Windows CE 2.0 and later

See Also

Reference

Waveform Audio Functions