Apparently no :-)
Monday morning I guess. I assumed all widgets had a clicked signal. Why don't they?

Anyway, here's the signal:
Qt Code:
  1. class MyLineEdit : public QLineEdit
  2. {
  3. ...
  4. signals:
  5. void clicked();
  6. ...
  7. };
  8.  
  9. // Edit: or mouseReleaseEvent(...) according to your taste
  10. void MyLineEdit::mousePressEvent(...)
  11. {
  12. emit clicked();
  13. }
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I think, but I guess I need to get some more cafeine to wake up.