QSpinBox ValueChanged is fired many times

Question

Let's suppose I have a QSpinBox with a value 123.45 in it. If I manually edit it and start erasing the five, valueChanged is fired for the value 123.4. Happens again if I go on erasing the four.

And it's also fired if I press enter after finishing editing.

I guess the problem is I should use void QAbstractSpinBox::editingFinished () instead of valueChanged, but it looks like valueChanged were the recommended approach as there are many more examples ans usage in my oppinion, so I want to be sure about this.

Any idea?

Answer 1

Finally I found the keyboardTracking property in Qt Documentation. Easy to set, and works like a charm!

Answer 2

It is fine in my opinion to use either signal, several of the Qt form elements have both an editingFinished and a ????Changed signal.

• QLineEdit
• QAbstractSpinBox sub-classes:
  • QDateTimeEdit
  • QDoubleSpinBox
  • QSpinBox

The multi-line QTextEdit only has a textChanged as pressing return creates a new line not move focus.