How to set validator for all Line edit

[dheerendra]

No nothing exist like this.

[SGaist]

Hi,

You can use findChildren and use a loop to set the validator.

Also, you might want to consider using a more appropriate widget for integer input like QSpinBox.

[ManiRon]

@SGaist

I used something like this

QList<QLineEdit *> allPButtons = this->findChildren<QLineEdit *>();
for (int i=0; i < allPButtons.size(); i++)
{
    allPButtons.at(i)->setValidator(new QIntValidator(0,20,this));
}

and it worked

[ManiRon]

@SGaist

But it applied for all the line edit. Now i have a three line edit in one group box and want to apply certain validator for them alone then whether is it possible? Just a doubt?

[ManiRon]

@SGaist

for group box i did something like this and it woked

  QList<QLineEdit *> allPButtons = ui->groupBox- 
                          >findChildren<QLineEdit *>();
    for (int i=0; i < allPButtons.size(); i++)
   {
      allPButtons.at(i)->setValidator(new 
    QIntValidator(0,20,this));
    }

[dheerendra]

Yes, it possible if with little bit more programming. Set the object name for each of the lineEdit object. Inside the for loop just do something like.

for (int i=0; i < allPButtons.size(); i++)
{
   if(allPButtons.at(i).objectName.compare("ManiRon")==0) {
      // set validator
   }else {
    allPButtons.at(i)->setValidator(new QIntValidator(0,20,this));
   }
}

[ManiRon]

@dheerendra said in How to set validator for all Line edit:

if(allPButtons.at(i).objectName.compare("ManiRon")==0) {
// set validator
}else

it worked thanks sir

[dheerendra]

Cool. Enjoy Qt programming. Please move the issue to SOLVED state. It helps others as well.

[SGaist]

One small thing:
@ManiRon said in How to set validator for all Line edit:

QList<QLineEdit *> allPButtons

Be more careful with the names of your variables. allPButtons suggests a list of QPushButton which is unrelated to your QLineEdit setup. This makes your code hard to read and understand.

[ManiRon]

@SGaist
sure Sir