private static extern MMRESULT midiInGetDevCaps(UIntPtr uDeviceID, ref MIDIINCAPS caps, uint cbMidiInCaps);

MMRESULT

public static extern MMRESULT midiOutGetDevCaps(UIntPtr uDeviceID, ref MIDIOUTCAPS lpMidiOutCaps, uint cbMidiOutCaps);

MMRESULT

    uint uiMMResult = midiOutGetErrorText(mmrError, sb, MAXERRORLENGTH + 1);

    if (uiMMResult != MMSYSERR_NOERROR)

Returns MMRESULT. Possible values are:

Returns a constant value from MMRESULT:

Returns MMRESULT. Possible values are:

Unpreparing a buffer that has not been prepared has no effect, and the function returns MMRESULT of MMSYSERR_NOERROR.

Shared Function mixerGetID(<MarshalAs(UnmanagedType.I4)> ByVal hmxobj As Integer, ByRef puMxId As UInteger, ByVal fdwId As MixerFlags) As MMRESULT

MMRESULT

Shared Function mixerGetLineInfo(<MarshalAs(UnmanagedType.I4)> ByVal hmxobj As Integer, ByRef pmxl As MIXERLINE, ByVal fdwInfo As MixerFlags) As MMRESULT

MMRESULT

public static enum MMRESULT : uint

Enum MMRESULT

Shared Function waveInAddBuffer(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer, ByVal pwh As IntPtr, ByVal cbwh As UInteger) As MMRESULT

Shared Function waveInAddBuffer(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer, ByRef pwh As WAVEHDR, ByVal cbwh As UInteger) As MMRESULT

MMRESULT

Shared Function waveInClose(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer) As MMRESULT

MMRESULT

Shared Function waveInReset(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer) As MMRESULT

MMRESULT

Shared Function waveInStart(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer) As MMRESULT

MMRESULT

static extern MMRESULT waveInUnprepareHeader(IntPtr hwi, ref WAVEHDR pwh, uint cbwh);

Shared Function waveInUnprepareHeader(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer, ByVal pwh As IntPtr, ByVal cbwh As UInteger) As MMRESULT

Shared Function waveInUnprepareHeader(<MarshalAs(UnmanagedType.I4)> ByVal hwi As Integer, ByRef pwh As WAVEHDR, ByVal cbwh As UInteger) As MMRESULT

MMRESULT

    if ((MMRESULT = waveOutPrepareHeader(waveDevice, waveHdrPtr, Marshal.SizeOf(waveHdr))) != MMSYSERR_NOERROR)

       waveOutGetErrorText(MMRESULT, errmsg, MAXERRORLENGTH);

    if ((MMRESULT = waveOutWrite(waveDevice, waveHdrPtr, Marshal.SizeOf(waveHdr))) != MMSYSERR_NOERROR)

       if ((MMRESULT = waveOutReset(waveDevice)) != MMSYSERR_NOERROR)

        waveOutGetErrorText(MMRESULT, errmsg, MAXERRORLENGTH);

    if ((MMRESULT = waveOutUnprepareHeader(waveDevice, waveHdrPtr, Marshal.SizeOf(waveHdr))) != MMSYSERR_NOERROR)