How to set validator for all Line edit

[ManiRon]

@dheerendra

can we set the validator for a individual group instead of setting for each and every line edit.

Set Validator for all line edit in group which accepts only int values instead of setting for each and every line edit can we set validator for a all line edit at once so that it works.

Set Validator for all line edit in group which accepts only string values .

[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