ActionScript 2.0 Components Language Reference 
ActionScript 2.0 Components Language Reference |
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Flash Player 6 (6.0.79.0).
Flash MX Professional 2004.
myForm.rootForm
Property (read-only); returns the form at the top of the form hierarchy that contains myForm. If myForm is contained by an object that is not a form (that is, a slide), this property returns myForm.
In the following example, a reference to the root form of myForm is placed in a variable named root. If the value assigned to root refers to myForm, then myForm is at the top of its form tree.
var root:mx.screens.Form = myForm.rootForm;
if(root == myForm) {
trace("myForm is the top form in its tree");
}
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