setLabel in QprogressDialog

[mickey]

hi, I create a progress dialog from disigner and subclassedit; then I need set its label but the error below occur...why this?

myProgressDialog* progress = new myProgressDialog (steps, this, "progress", TRUE );
QLabel* l = new QLabel ("progress", 0);
progress->setLabel(l);
 error C2039: 'setLabel' : is not a member of 'myProgressDialog'

myProgressDialog* progress = new myProgressDialog (steps, this, "progress", TRUE );
QLabel* l = new QLabel ("progress", 0);
progress->setLabel(l);
 error C2039: 'setLabel' : is not a member of 'myProgressDialog'

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...also other members get same error.....