How to set Input Mask and QValidator to a QLineEdit at a time in Qt?

Question

I want a line edit which accepts an ip address. If I give input mask as:

ui->lineEdit->setInputMask(\"000.000.000.000\");

It is accep

Answer 1

In accordance to Arun Kumar K S's answer:

If myIP.setAddress() was successfull, you can write the ip back to the line edit as a formatted string:

ui->lineEdit->setText(myIP->toString());

Consequently, you don't neccessarily need to set a mask (nor a validator or regex).

Note setAddress() writes/overwrites your myIP also if it fails to read the ip. Thus, calling toString() in this case results in an empty string.