// Get the checked value of a Radio Button User Control
int $windowId;
int $controlId1, $controlId2, $controlId3;
int $rect[ 4 ];
 
// First create a User Window to place the Controls on
$windowId = `createWindow "MyWindow"`;
 
// Create the User Controls on the Window. Check the middle one.
$rect[ 0 ] = 20; 
$rect[ 1 ] = 20;
$rect[ 2 ] = 100;       
$rect[ 3 ] = 40;
$controlId1 = `createRadioButton $windowId -pos $rect -text "Radio 1"`;
$rect[ 1 ] = 50;
$rect[ 3 ] = 70;
$controlId2 = `createRadioButton $windowId -pos $rect -text "Radio 2" -check`;
$rect[ 1 ] = 80;
$rect[ 3 ] = 100;
$controlId3 = `createRadioButton $windowId -pos $rect -text "Radio 3"`;

// Find out which one is checked. 
if( `getRadioButtonCheck $controlId1` == true )
  {
    print "Radio 1 checked";
  }
else if(`getRadioButtonCheck $controlId2` == true )
  {
    print "Radio 2 checked";
  }
else if(`getRadioButtonCheck $controlId1` == true )
  {
    print "Radio 3 checked";
  }
else
  { print "None checked"; 
  }