MACROMEDIA FLASH 8-COMPONENTS LANGUAGE Reference page 1048

Description
Property; behaves differently depending on whether you get or set the property. If you get the
property, it returns the object reference of the currently selected radio button in a radio button
group. If you set the property, it selects the specified radio button (passed as an object
reference) in a radio button group and deselects the previously selected radio button.
Example
The following example creates three radio buttons in a radio group, positions the buttons, and
creates a listener for a click event on the radio group. When the user clicks a radio button, the
listener uses the
selection
clicked.
You first drag a RadioButton component from the Components panel to the current
document's library, and then add the following code to Frame 1 of the main timeline.
/**
Requires:
- RadioButton component in library
*/
import mx.controls.RadioButton;
this.createClassObject(RadioButton, "first_rb", 10, {label:"first",
groupName:"radioGroup"});
this.createClassObject(RadioButton, "second_rb", 20, {label:"second",
groupName:"radioGroup"});
this.createClassObject(RadioButton, "third_rb", 30, {label:"third",
groupName:"radioGroup"});
// Position radio buttons on Stage.
second_rb.move(0, first_rb.y + first_rb.height);
third_rb.move(0, second_rb.y + second_rb.height);
// Create listener object.
var rbListener:Object = new Object();
rbListener.click = function(evt_obj:Object){
trace("The selected radio instance is " + radioGroup.selection);
}
// Add listener.ll
radioGroup.addEventListener("click", rbListener);
1044 RadioButton component
property to display the instance name of the button that was