質問

I am making a calculator in qt. I have a plain text edit box. when I input numbers in it, I want it to print from the right(like any other calculator).

also, I want to disable input of anything except numbers. (little new in qt)

役に立ちましたか?

解決

You just need to use setAlignment(Qt::AlignRight) of your QLineEdit and

QLineEdit::setValidator(), for example:

myLineEdit->setValidator( new QIntValidator(0, 100, this) );

Take alook at this one as well: Set QLineEdit to accept only numbers

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