MAUI_View myWindow;myWindow.size(300,300);
MAUI_Slider minPeak; minPeak.range(-2.0,2.0);minPeak.position(0,0);
MAUI_Slider maxPeak; maxPeak.range(-2.0,2.0);maxPeak.position(0,100);
MAUI_Button exit; exit.name("Exit"); exit.position(0,200);
myWindow.addElement(minPeak);
myWindow.addElement(maxPeak);
myWindow.addElement(exit);
myWindow.display();

adc => Gain g => blackhole;
10.0 => g.gain;

0 => float min;
0 => float max;

spork ~ watchForPeaks();

while (!exit.state())  {
    0.1 :: second => now;
    <<< min, max >>>;
    min => minPeak.value; 
    max => maxPeak.value;
    0 => min;
    0 => max;
}

myWindow.destroy();

fun void watchForPeaks()  {
    while (1)  {
        1 :: samp => now;
        if (g.last() > max) g.last() => max;
        if (g.last() < min) g.last() => min;
    }
}