How to set validator for all Line edit

ManiRon

I have two tasks,

Task 1: I have two group box . Now i want to set validator for the line edit which is present in the group box based on the type of group box its present.

Eg: one group box with three line edit only gets integer value and the other group box only gets string value

Task 2: Based on the group box i want to set validator for all the line edit present in group box.

Eg: one group box has 3 line edit then i have to set validator in common for all the line edit so that it validates all the line edit data .

Is it possible ?

dheerendra

It is possible. What is possible is - Setting the validator is per object. You need to find the logic to set the validator for each&every lineEdit objects.

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