Set the Modulation Wheel Value programmatically

Question

I'm musician and using a music software which provides a plugin in which I can use some javascript code to edit or create MIDI Data in Real Time. I want to implement a logic that increases the value of the Modulation Wheel when a specific button or note on the Keyboard is pressed. My problem is that I have no skills in Javascript programming and I don't know how to start. Can somebody help me with some tipps that will push me in the right direction?

function HandleMIDI(event) {

//How to check if the key which was pressed is a specific note like "A2" ?
//How to check if the key which was pressed is a specific button on the Keyboard ?
if (event instanceof Note) {

//How to overwrite the current value of the Mod Wheel ?

event.send();
 }
}

Thanks in advance for your support!

You should at least tell the name of the framework you are using. Without knowing that, how is anyone supposed to know the code? — Riccardo Perego, Sep 22 '22 at 14:27
As I sayed I'm using a music software called "Mainstage" and the plugin which allow javascript code is called "Scripter". It uses the JavaScriptCore framework. — Guilian Nkamga, Sep 22 '22 at 15:25
And by affecting the modulation wheel you are trying to affect the note’s pitch? — Riccardo Perego, Sep 22 '22 at 17:01
No. I'm doing many other stuff like changing volume of some instruments — Guilian Nkamga, Sep 22 '22 at 17:46

score 0 · Accepted Answer · answered Sep 24 '22 at 14:54

After a lot of research and trying, I found this solution

function HandleMIDI(event)
{
    if(event instanceof NoteOn && event.pitch == 84)
    {
        var modWheel = new ControlChange();
        modWheel.channel=5;
        modWheel.number=1;
        modWheel.value=20;
        modWheel.send();
        modWheel.trace();
    }
    else
    {
        event.send();
    }
}

Set the Modulation Wheel Value programmatically

1 Answers1