set the validation for checkboxes

I want one example to set the validation for checkboxes?

By validation if you mean to check whether the checkbox is checked or not use isChecked() method to find it out.

hi,

Code:

---

class myClass:public ....
{
........
........
private:
int nCnt;
private slots:
void chkClicked(int nState);
};
QCheckBox *c1 = new QCheckBox;
connect(c1,SIGNAL(stateChanged(int)),this,SLOT(chkClicked(int)));
 
//Constructor
myClass::myClass()
{
....
....
nCnt = 0;
....
....
}
 
void myClass::chkClicked(int nState)
{
if( nState == Qt::Checked)
{
nCnt++;
  //Check box checked
}
else if( nState == Qt::Unchecked)
{
//Check box unchecked
nCnt--;
}
}

---

Use this nCnt to find the number checkboxes clicked.

hope it helps,
Bala

I used this code in my program.but it doesn't work .

QDoubleValidator *validator=new QDoubleValidator(18.5,39.0,1,m_ui->lineEdit);
m_ui->lineEdit->setValidator(validator);

I want to set the validation for LineEdit .plz reply me

A QLineEdit *is not* a checkbox.

Quote:

---

I used this code in my program.but it doesn't work .

---

Why not? What isn't working? If you don't show us any code, we could guess forever about what is wrong.

I used this code in my program.but it doesn't work .

QDoubleValidator *validator=new QDoubleValidator(18.5,39.0,1,m_ui->lineEdit);
m_ui->lineEdit->setValidator(validator);

I want to set the validation for LineEdit .plz reply me

Quote:

---

Originally Posted by sangee

I used this code in my program.but it doesn't work .

QDoubleValidator *validator=new QDoubleValidator(18.5,39.0,1,m_ui->lineEdit);
m_ui->lineEdit->setValidator(validator);

I want to set the validation for LineEdit .plz reply me

---

and WHAT is your problem?

I used keyboard design in my program.I want to set the values 18.5 to 39.0 only for keyboard's LineEdit.how to set the validation for this LineEdit?

We don't want to know what you are trying to do; that is evident from the correct code you posted. We want to know why you think it is "not working" and how you determined that.

QDoubleValidator consider for decimal points only not range(18.5 to 39.0).how i set the validation for this LineEdit? I want one example for LineEdit Validation.

There is not standard way (known to me) to achieve this. You should write your own validator.