pinvoke.net: Edit: winmm.midiOutGetDevCaps

@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$
@pinvoke=http://pinvoke.net/$$$.htm

Summary: The midiOutGetDevCaps function queries a specified MIDI output device to determine its capabilities.

!!!!C# Signature:
 [DllImport("winmm.dll", SetLastError = true)]
 public static extern MMRESULT midiOutGetDevCaps(UIntPtr uDeviceID, ref MIDIOUTCAPS lpMidiOutCaps, uint cbMidiOutCaps);
!!!!User-Defined Types:
[MIDIOUTCAPS]
[MMRESULT]

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

!!!!Notes:
None.

!!!!Tips & Tricks:
Use (uint)Marshal.SizeOf(typeof(MIDIOUTCAPS)) for cbMidiOutCaps.

!!!!Sample Code:
        [DllImport("winmm.dll", SetLastError = true)]
        static extern uint midiOutGetNumDevs();

[DllImport("Winmm.dll")]
        static extern uint midiInGetNumDevs();

[StructLayout(LayoutKind.Sequential)]
        struct MIDIOUTCAPS
        {
            public ushort wMid;
            public ushort wPid;
            public uint vDriverVersion;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
            public string szPname;
            public ushort wTechnology;
            public ushort wVoices;
            public ushort wNotes;
            public ushort wChannelMask;
            public uint dwSupport;
        }

private void GetOutputDevices()
        {
            uint outDevs = midiOutGetNumDevs();

for (int x = 0; x < outDevs; x++)
            {
                MIDIOUTCAPS caps = new MIDIOUTCAPS();
                midiOutGetDevCaps((UIntPtr) x, ref caps, (uint)Marshal.SizeOf(typeof(MIDIOUTCAPS)));

//Do whatever you want with the caps object here
                MessageBox.Show(caps.szPname);
            }
        }

Documentation: midiOutGetDevCaps@msdn on MSDN