line edit

[Emre MUTLU]

int i=ui->lineEdit->Text().length();
if(i>=15)
{
qDebug()<<"more than one point is entered.";
}

like this?

[muhammed hayr]

@Emre-MUTLU

thank you for replying
I mean, "When I enter the number 15.96, the transactions continue"
"I want it to give an error when 15.9.6. is entered in this way"
thank you for helping

[Cobra91151]

Hello!

If you want to check the numbers in your QLineEdit, I would suggest to set the validator for example - QDoubleValidator: https://doc.qt.io/qt-5/qdoublevalidator.html
For int value, there is QIntValidator: https://doc.qt.io/qt-5/qintvalidator.html#details

[muhammed hayr]

@Emre-MUTLU
can you please explain more

[Emre MUTLU]

Do you want to separate by dots ? or value ? i don't get this

[muhammed hayr]

@Emre-MUTLU
I want only one point to be entered
I want it to give an error even though more than one point is entered

[Emre MUTLU]

There are better ways but this came to mind.

QString str=ui->lineEdit->Text();
QStringList list;
for(int i=0;i<ui->lineEdit->Text().Length();i++)
{
list=str.split(".");
}
if(list.Length()>2)
{
qDebug()<<" more than one point is entered";
}

[SGaist]

Hi,

Why not use a QDoubleSpinBox for your number input ?

[muhammed hayr]

@SGaist
can you give an example

[jsulm]

@muhammed-hayr If you open the link @SGaist gave you you will find a link "Spin Boxes Example"...

[muhammed hayr]

@jsulm
I am using numpad

[jsulm]

@muhammed-hayr said in line edit:

I am using numpad

?

[qwasder85]

@Emre-MUTLU Why the loop?

Shorter version:

QString text = myLineEdit.text();

if (2 < text.split('.', Qt::KeepEmptyParts).length())
    // Display your warning

The cleaner way would be a RegEx validator in my opinion. Although this here should work and would be way less effort, haha.

[Emre MUTLU]

@Emre-MUTLU said in line edit:

There are better ways but this came to mind.
?