I have found a simple solution with the MidiList object:

• When a Note On command comes in, then in a MidiList the index of the pressed key is set to the value of the note that is output. e.g. I press key 60 which is not active but only the next key so "60 -> 61" is stored in the MidiList.
• When a Note Off command comes in, before the Note Off command is sent, it is first checked whether another key also has this value
  • If no key has this value, a Note Off command is sent for the note and the key is set to -1 in the MidiList.
  • If one or more keys have this value, the NoteOff command is not sent

onInit()

reg midiKeyList = Engine.createMidiList();

onNoteOn()

const receivedNote = Message.getNoteNumber();
var outputNote = getOutputNoteBySnapMode(receivedNote);
midiKeyList.setValue(receivedNote, outputNote);
	
sendNoteToMidiOut(outputNote);

onNoteOff()

const receivedNote = Message.getNoteNumber();
var outputNote = getOutputNoteBySnapMode(receivedNote);
	
midiKeyList.setValue(receivedNote, -1); // set pressed Note in midiList to -1
if (midiKeyList.getValueAmount(outputNote) <= 0)
{
	sendNoteToMidiOut(outputNote);
}

I hope you can understand it.
Thanks guys

@meto396 Here

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Hi HISE Community,

I have written a Hise script that manipulates MIDI notes.
This means that I can trigger the same MIDI values with different keys on my MIDI keyboard.

This leads to the problem that if I press two or more keys on my MIDI keyboard that trigger the same MIDI value, that when I release one of the keys, the note is completely gone, even though I still press the other key.
I use the Message object to manipulate the incoming MIDI notes and Message.sendToMidiOut to pass the manipulated notes to the next plugin.

Any suggestions for solutions, perhaps with an example script/snippets.
Would be quite helpful

@ulrik
It does not work with stuck notes

Example Video

@ulrik Nice, but after playing around with it a bit, I realized that you still have to press a midi Note to send the NoteOff commands

@ulrik Yes it works but unfortunately only as a VST2 plugin

@d-healey

Okay, my bad.
I have now solved the problem like this:
When you press the panic button you have one second to press any MIDI note so it can send a note off command to the next plugin for each note.

Here is the code for it

onInit()

// MIDI Panic Btn
const midiPanicBtn = Content.addButton("midiPanicBtn").setPosition(204, 40, 70, 43);
var isMidiPanicBtnActive = midiPanicBtn.getValue;

// MIDI Panic Btn Timer
const midiPanicBtn_timer = Engine.createTimerObject();
midiPanicBtn_timer.setTimerCallback(function(){
	var panicBtn = Content.getComponent("midiPanicBtn");
	isMidiPanicBtnActive = 0;
	midiPanicBtn_timer.stopTimer();
});

Button-Callback

if(isMidiPanicBtnActive == 0)
{
   isMidiPanicBtnActive = 1;
   midiPanicBtn_timer.startTimer(1000);
}

onNoteOff()

if (isMidiPanicBtnActive == 1)
{
	for(i=0; i<128; i++)
	{
		Console.print(i);
		Message.setNoteNumber(i);
		Message.sendToMidiOut();
	}
}

Thank you all for helping me!

@Christoph-Hart said in How to make a Panic Button (Send All MIDI Off)?:

sendToMidiOut

That's a good suggestion, but when trying around with the MessageHolder object I noticed that the object does not have the function sendToMidiOut() at all and if I understand correctly sendToMidiOut() only works in the Midi callbacks, which is only triggered when a Midi signal comes in

@d-healey That's exactly my problem, but if it's due to HISE itself, then there's nothing you can do about it, right?
It's not that bad anyway

@d-healey said in Set step size of button for pluginParameter ?:

The problem is on the HISE end I believe

@johnmike that would be a much simpler solution, but I found nothing in the documentation about project master bypass.