This is the "example" I have been referring to:
Quote Originally Posted by jpn View Post
Qt Code: 
  1. QButtonGroup* grp = new QButtonGroup(this);
  2. grp->addButton(ui.pb1, 1);
  3. grp->addButton(ui.pb2, 2);
  4. ...
  5. grp->addButton(ui.pb12, 12);
  6. connect(grp, SIGNAL(buttonClicked(int)), this, SLOT(slotPb(int))
  7.  
  8. void PmForm::slotPb(int id)
  9. {
  10.     ui.leZone->setText(QString("This is Pb%1").arg(id));
  11. }
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Many people (especially the ones switching from Qt3 to Qt4) tend to criticize Qt Designer. In my humble opinion it's just a great tool for it's purpose, designing GUI layouts. I guess the main reason for not including QButtonGroup in Designer is because it's not a widget but a functionality class. The Designer is for designing layouts, you code the functionality.

FAQ:
Beginning with Qt4.0 Qt Designer seized to be an all-purpose development environment and became strictly a GUI Designer which can easily be incorporated into real IDEs like Visual Studio, Eclipse or KDevelop.
According to this poll, most people on this forum still seem to be happy with and using the Designer.

Anyway, there's a related entry in the Task Tracker: 126997 - Suggestion: QButtonGroup in Designer. Maybe in the future you can setup button groups from the Designer..

I'd say it's not about the age but the passion. You're not too old as long as you have any personal interest into programming. Of course amnesia and such might make it harder but...