Displaying integer and float numbers in a QPlainTextEdit object

Question

I want to display a numerical value in a QPlainTextEdit object. I use below code for this purpose.

QString s;
s.sprintf("%d", deneme); //deneme is an integer value.
ui->results->setPlainText(s);

Is there any other method for displaying integer and float numbers in a QPlainTextEdit without defining a new QString object.

Thanks.

score 1 · Accepted Answer · answered Dec 20 '11 at 14:14

1

QString::number()

You still have to create a QString instance (that is what QPlainTextEdit requires), but this may be at least a little more convenient.

There are a bunch of overloads of that method to accommodate various input and output formats.

answered Dec 20 '11 at 14:14

Dave Mateer

`ui->results->setPlainText(QString::number(deneme));` Does this code also create a QString object or not? – adba Dec 25 '11 at 11:00
Yes; you can't get around the creation of a QString--that is what the `setPlainText` method requires. The usage above (probably) creates a temporary, and the compiler *might* optimize this away, but there is no guarantee. – Dave Mateer Dec 28 '11 at 14:15

score 1 · Answer 2 · answered Dec 20 '11 at 15:24

1

How about:

ui->results->setPlainText(QString("%1").arg(deneme));

answered Dec 20 '11 at 15:24

Phil Hannent

2 Answers2