C# Signature:

[DllImport("winmm.dll", SetLastError=true)]
static extern UInt32 midiOutUnprepareHeader(IntPtr hMidiOut, IntPtr lpMidiOutHdr, UInt32 cbMidiOutHdr); // LD83

VB Signature:

Declare Function midiOutUnprepareHeader Lib "winmm.dll" (hMidiOut AS Intptr, lpMidiOutHdr AS IntPtr, cbMidiOutHdr) AS UInt32 ' LD83

User-Defined Types:

hMidiOut - Handle to the MIDI output device. This parameter can also be the handle of a MIDI stream cast to HMIDIOUT.

lpMidiOutHdr - Pointer to a MIDIHDR structure identifying the buffer to be cleaned up.

cbMidiOutHdr - Size, in bytes, of the MIDIHDR structure.

Returns

Returns MMRESULT. Possible values are:

Alternative Managed API:

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Notes:

None.

Tips & Tricks:

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Sample Code:

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