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midiOutShortMsg The midiOutShortMsg function sends a short MIDI message to the specified MIDI output device.
VB4-32,5,6
Declare Function midiOutShortMsg Lib "winmm.dll" (ByVal hMidiOut As Long, ByVal dwMsg As Long) As Long |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- hmo
Handle of the MIDI output device. This parameter can also be the handle of a MIDI stream cast to HMIDIOUT.
- dwMsg
MIDI message. The message is packed into a doubleword value with the first byte of the message in the low-order byte. The message is packed into this parameter as follows:
High word High-order byte Not used.
Low-order byte Contains a second byte of MIDI data (when needed).
Low word High-order byte Contains the first byte of MIDI data (when needed).
Low-order byte Contains the MIDI status.
The two MIDI data bytes are optional, depending on the MIDI status byte. When a series of messages have the same status byte, the status byte can be omitted from messages after the first one in the series, creating a running status. Pack a message for running status as follows:
High word High-order byte Not used.
Low-order byte Not used.
Low word High-order byte Contains a second byte of MIDI data (when needed).
Low-order byte Contains the first byte of MIDI data. |
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following:
MIDIERR_BADOPENMODE
The application sent a message without a status byte to a stream handle.
MIDIERR_NOTREADY
The hardware is busy with other data.
MMSYSERR_INVALHANDLE
The specified device handle is invalid. |
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