function onNoteOn()
{
    local n = Message.getNoteNumber();

	if (ks.indexOf(n) != -1)
    {
        btnAccent[ks.indexOf(n)].setValue(1);
        btnAccent[ks.indexOf(n)].changed(); //Trigger button's callback
    }
    
}

Content.makeFrontInterface(600, 250);

Synth.deferCallbacks(true);

const var Sampler1 = Synth.getSampler("Sampler1");

Sampler1.enableRoundRobin(false);

const var ks = [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47]

for (i = 0; i < ks.length; i++)
{
    Engine.setKeyColour(ks[i], Colours.withAlpha(Colours.red, 0.3));
}

// btnAccent
const var btnAccent = [];
for (i = 0; i < ks.length; i++)
{
    btnAccent.push(Content.getComponent("btnAccent" + i));
    btnAccent[i].setControlCallback(onbtnAccentControl);
}

inline function onbtnAccentControl(component, value)
{
    if (value)
    {
        local index = btnAccent.indexOf(component); // Index of button that triggered callback
        
        for (i = 0; i < btnAccent.length; i++)
            btnAccent[i].setValue(i == index);
        
        Sampler1.setActiveGroup(index + 1);
    }
    else 
    {
        component.setValue(1); // Prevent button being turned off by clicking on it
    }
}

Key skill control, how to achieve, each time you press the key only show the corresponding, others are hidden, and then press another key, you will hide the previous one, show the control prompt of the current key

@d-healey

See. DLL only

@d-healey How can I not find vst3 when the export is finished

@d-healey Is that so OK, thank you, teacher

@d-healey Is projucer not set correctly

@d-healey Set, you can export vst2 normally

@GUJIAN

@GUJIAN You got it