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PortMidi.SendMessage

Sends a midi message.

Component Version macOS Windows Linux Server FileMaker iOS SDK
PortMidi 4.2 Yes Yes No No No
MBS( "PortMidi.SendMessage"; StreamRef; Status; Data1; Data2 { ; Timestamp } )   More

Parameters

Parameter Description Example Flags
StreamRef The reference to the midi stream. You create those with PortMidi.OpenInput or PortMidi.OpenOutput and finally close them with PortMidi.Close. $stream
Status The Midi status code. 144
Data1 The first data byte. 4*12+0
Data2 The second data bytes. 127
Timestamp The timestamp. If zero or not provided, note is sent immediately. 0 Optional

Result

Returns OK or error.

Description

Sends a midi message.
The Status is the command code. 144 is note on and 128 is note off. For those note commands Data1 is the number of the note. 48 (4*12) is C2 and than you can count over all notes till you get to next octave with C3 (5*12).

Examples

Press down a C note:

MBS( "PortMidi.SendMessage"; $StreamRef; 144; 4*12+0; 127 )

Release a C note:

MBS( "PortMidi.SendMessage"; $StreamRef; 128; 4*12+0; 127 )

See also

Example Databases

Created 18th August 2014, last changed 18th August 2014


PortMidi.Rescan   -   PortMidi.SendMessageRaw

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