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midiOutGetID

Posted on 1998-01-31
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Last Modified: 2012-08-14
I need to know how to get the handle of midi output devices on my machine, for the midiOutGetID.
I use midiOutGetNumDevs to get to know how many devices I have available.
What do I do now?
How do I get their handles?
thank you.
CATT.
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Question by:CATT
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Future earned 40 total points
ID: 1454720
Write a function similar to this.  You would use MidiOutGetDevCaps to get the capabilities of each device.
Add the following types and declarations to your program. The ID for the MIDI Mapper is always -1.  Hope this is enough to get you started.

Declare Function midiOutGetDevCaps Lib "winmm.dll" Alias "midiOutGetDevCapsA" (ByVal uDeviceID As Long, lpCaps As MIDIOUTCAPS, ByVal uSize As Long) As Long

Type MIDIOUTCAPS
        wMid As Integer
        wPid As Integer
        vDriverVersion As Long
        szPname As String * 32
        wTechnology As Integer
        wVoices As Integer
        wNotes As Integer
        wChannelMask As Integer
        dwSupport As Long
End Type


Function GetSoundBoardMIDIAudioID()  'looks for "synth" as output                                      'device
  Dim NumAuxDevs As Long
  Dim DevNum As Long
  Dim DevCaps As MIDIOUTCAPS
  Dim retval As Long, Pos As Long

  NumAuxDevs = midiOutGetNumDevs()
  GetSoundBoardMIDIAudioID = MIDI_MAPPER
  For DevNum = 0 To (NumAuxDevs - 1)
    retval = midiOutGetDevCaps(DevNum, DevCaps, 92)
    Pos = InStr(LCase$(DevCaps.szPname), "synth")
    If Pos <> 0 Then
      GetSoundBoardMIDIAudioID = DevNum
      Exit Function
    End If
  Next DevNum
End Function
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Author Comment

by:CATT
ID: 1454721
No prob.  BTW, one thing you should add is PUBLIC MIDI_MAPPER = -1& along with your declarations.  Or just use -1 for the device ID instead of bothering with any of this, as far as I know all systems have the MIDI mapper installed as an output device.

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