Signal level module in the GUI application?

Is there any module that could show the levels of signal in juce GUI application?
and whether such module could be easily added to the MainComponent like the “slider” and “button” module?

The LevelMeter of juce is strangely hidden in AudioDeviceSelectorComponent.

If you consider third party modules, I wrote a free to use (BSD license) component:

You can measure AudioBuffers and connect a Component to it, that will reflect the meter in RMS and max, including a peak numeric indicator and an over LED.

I am a newer for c++ gui development. Is there easy operation module that like add a slider to MainCompionent? This is seems complex:grinning::expressionless: