How to Receive comboBoxChanged() Messages from CustomToolbarComboBox in JUCE demo?

General JUCE discussion
1

What specific code would one have to add to JUCE demo to enable the CustomToolbarComboBox to send change messages to ToolbarDemoComp main panel? For example, to change a TextBox in ToolbarDemoComp main panel?

I set my container that contains the toolbar as a Button::Listener, and put the following code in the constructor.

addAndMakeVisible(toolbar);
toolbar.addDefaultItems (factory);
for (int i=0; i<toolbar.getNumItems(); i++)
{
    toolbar.getItemComponent(i)->addListener(this);
}

It can receive buttonClicked() messages from toolbar buttons as follows

void ViewerFrame::buttonClicked (Button* button)
    int i=0;
    for (i=0;i<toolbar.getNumItems();i++)
    {
        if (button == toolbar.getItemComponent(i))
            break;
    }
    int id = toolbar.getItemId(i);
    if (DemoToolbarItemFactory::DemoToolbarItemIds::doc_open == id)
        std::cout << "open " << "\n";
    else if(DemoToolbarItemFactory::DemoToolbarItemIds::doc_save == id)
        std::cout << "save " << "\n";
    else if(DemoToolbarItemFactory::DemoToolbarItemIds::doc_saveAs == id)
        std::cout << "saveAs " << "\n";
    }
}

I’m not sure if this is the best way to do this but it works.

I also made my toolbar’s container be a ComboBox::Listener and added a comboBoxChanged () method, but I don’t receive messages from the ComboBox, I assume because the above addListener does not work for a custom component?

What is the correct way to do this?