example gui

#include "TestProcessor.h"
#include "vstguiex.h"
#include "plugin-bindings\aeffguieditor.h"

class GUI : public AEffGUIEditor, public CControlListener
{
public:

    GUI(Processor * effect)
    :
        AEffGUIEditor(effect), processor(effect),
        cutoff({0, 0, 80, 80}, this, effect->kCutoff, nullptr, nullptr),
        resonance({ 80, 0, 80, 80 }, this, effect->kResonance, nullptr, nullptr),
        curve({ 160, 0, 80, 80 }, this, /* any non-used value goes here */ 3, nullptr, nullptr)
    {
        // set size, etc.
    }

    void valueChanged(CControl * ctrl) override
    {
        // standard interface:
        if (ctrl == &cutoff)
        {
            processor->setParameterAutomated(processor->kCutoff, ctrl->getValue());
        }
        else if (ctrl == &resonance)
        {
            processor->setParameterAutomated(processor->kResonance, ctrl->getValue());
        }
        // a control the host doesn't know about!
        else if (ctrl == &curve)
        {
            processor->setCurve(ctrl->getValue());
        }
    }

private:
    Processor * processor;
    CKnob cutoff, resonance, curve;
};