pinvoke.net: Edit: winmm.midiOutShortMsg

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Summary: The midiOutShortMsg function sends a short MIDI message to the specified MIDI output device. - LD83

!!!!C# Signature:
 [DllImport("winmm.dll")]
 static extern uint midiOutShortMsg(IntPtr hMidiOut, uint dwMsg);
!!!!VB Signature:
 Declare Function midiOutShortMsg Lib "winmm.dll" (hMidiOut As Intptr,dwMsg As UInt32) As UInt32
!!!!User-Defined Types:
None.

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:

//hmidi is an IntPtr obtained via [midiOutOpen] or other means.

byte[] data = new byte[4];
//[0] = status byte containing voice message and channel
//[1] = data 1
//[2] = data 2 (empty on some messages)
//[3] = empty

data[0] = 0xC0;//change instrument, channel 0
data[1] = 127;//gunshot
uint msg = BitConverter.ToUInt32(data, 0);
midiOutShortMsg(hmidi, msg);

data[0] = 0x90;//note on, channel 0
data[1] = 50;//pitch
data[2] = 100;//velocity
msg = BitConverter.ToUInt32(data, 0);
midiOutShortMsg(hmidi, msg);

Documentation: midiOutShortMsg@msdn on MSDN