   
	To make MLJuceVSTwrapper.cpp, replace these two JUCE methods with these:


    // ----------------------------------------------------------------
	// ML
    //==============================================================================
    float getParameter (VstInt32 index)
    {
        if (filter == nullptr)
            return 0.0f;
        
		MLPluginProcessor* MLFilter = static_cast<MLPluginProcessor*>(filter);
        
        jassert (isPositiveAndBelow (index, filter->getNumParameters()));
        return MLFilter->getParameterAsLinearProportion (index);
    }
    
    void setParameter (VstInt32 index, float value)
    {
        if (filter != nullptr)
        {
			MLPluginProcessor* MLFilter = static_cast<MLPluginProcessor*>(filter);
            jassert (isPositiveAndBelow (index, filter->getNumParameters()));
            MLFilter->setParameterAsLinearProportion (index, value);
        }
    }
    
	// ML
	// ----------------------------------------------------------------

and add the line #include "MLPluginProcessor.h" just after the first "namespace juce" block.




    Misc. problem notes:


    problem: Unknown type name HIViewRef in MLJuceVSTWrapper.mm
    trying:
        #define JUCE_SUPPORT_CARBON 1 in AppConfig.h
        (but see below)
    result: 
        solved

    problem:
        /Users/rej/Dev/juce/modules/juce_audio_plugin_client/utility/juce_CarbonVisibility.h:59:5: Use of undeclared identifier 'GetWindowEventTarget'
    notes:
        GetWindowEventTarget is defined in CarbonEvents.h
        error came from MLJuceVSTWrapper.mm
    trying:
        edit AppConfig.h to include
        ------
        #ifdef __LP64__
            #define JUCE_SUPPORT_CARBON 0
        #else
            #define JUCE_SUPPORT_CARBON 1
        #endif
        -------
    result:
        solved


categories of Juce things we are using:

Windows -> GLFW
Event handling -> GLFW, MLWidgets
GUI drawing -> GLFW, MLWidgets
Timing / callbacks -> std::chrono
threads -> std::thread
Files -> MLFile
VST / AU wrapper -> symbiosis


