public static uint midiOutOpen(out IntPtr lphmo, int uDeviceID, MidiWinApi.MidiMessageCallback dwCallback, IntPtr dwInstance, uint dwFlags)
{
if (s_midiOutPort != null)
{
lphmo = new IntPtr(uDeviceID);
return(MidiWinApi.MMSYSERR_NOERROR);
}
try
{
s_midiOutPort = MidiOutPort.FromIdAsync(GetDevices()[uDeviceID].Id).AsTask().Result;
lphmo = new IntPtr(uDeviceID);
if (s_midiOutPort == null)
{
return(MidiWinApi.MMSYSERR_ERROR);
}
}
catch (Exception)
{
lphmo = new IntPtr(uDeviceID);
return(MidiWinApi.MMSYSERR_ERROR);
}
return(MidiWinApi.MMSYSERR_NOERROR);
}
private void EnsureHandleIsCreated()
{
if (_handle != IntPtr.Zero)
{
return;
}
_callback = OnMessage;
ProcessMmResult(MidiOutWinApi.midiOutOpen(out _handle, Id, _callback, IntPtr.Zero, MidiWinApi.CallbackFunction));
}
public static extern uint midiInOpen(out IntPtr lphMidiIn, int uDeviceID, MidiWinApi.MidiMessageCallback dwCallback, IntPtr dwInstance, uint dwFlags);
public static uint midiInOpen(out IntPtr lphMidiIn, int uDeviceID, MidiWinApi.MidiMessageCallback dwCallback, IntPtr dwInstance, uint dwFlags)
{
lphMidiIn = new IntPtr(0);
return(MidiWinApi.MMSYSERR_NOERROR);
}
public static extern MMRESULT midiOutOpen(out IntPtr lphmo, uint uDeviceID, MidiWinApi.MidiMessageCallback dwCallback, IntPtr dwInstance, uint dwFlags);
