How to make lineEdit acceptable only integers?

[A Former User]

Welcome, how can I validate QLineEdit objects which could only accept int numbers? Objects are added via Qt designer tool.

[mrjj]

Hi
You can use
http://doc.qt.io/qt-5/qintvalidator.html#details

[VRonin]

How about using a QSpinBox?

[Gerd]

Hi,
depending on your needs an input-mask may help. This can be set inside designer. Look for Input-mask in the Documentation of QLineEdit.

Input Mask

[A Former User]

@Gerd Could you give an simple example how to use this mask?

[mostefa]

@testerius

You can do something like this:

ui->yourLineEdit->setValidator( new QIntValidator(yourMin(0 for example), yourMax(100 for example), this) );

Here we have a qlineedit that will accept only integer from 0 to 100

[Gerd]

Hi,

for an integer input between 0 and 100 set the mask to "009". Thats all.