QKeyEvent: check if the character is a letter or a digit

[LorenDB]

I have a custom keyPressEvent handler in a QWidget. I'd like to be able to decide if the key that has been pressed is a letter/number or if it is something else (e.g. alt, control, ...). Formerly, I've been simply comparing the keycode to the literal values of Qt::Key_A through Qt::Key_Z, and Qt::Key_0 through Qt::Key_9. However, that doesn't work for special Unicode characters (such as things like "ĉ"). Is there any way to simply figure out whether the value of the key is a letter/number or not?

[Bonnie]

Use QKeyEvent::text() to get a QString of the input.