line edit

muhammed hayr

Hello
I had a question, I hope you can help,
I have set it to take 15 characters in line edit, I want the period to be entered only once, otherwise it will give a warning when "more than one point is entered", can you help with this?
thanks .

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.
?