Thanks jpn, that solves the design problem, now, does anyone know why the selectAll() does not select anything in my QLineEdit object?

It should be noted that I have an input mask on this object like: 000.000.000.000, a standard 4 segment IP address. What is displayed in the control is "0 .0 .0 .0 ". If I don't use the eventFilter, the first character is selected when the control is tabbed into. If using the eventFilter, no selection occurs .