Accept/Not accept symbols in QLineEdit

[naturalpsychic]

I have got a class MyLineEdit : QLineEdit

All I want is it to accept symbols if acceptSymbol() returns true and not accept it if it returns false. Has anybody got any idea why my implementation not working?

void MyLineEdit::keyPressEvent(QKeyEvent *key)
{
 
    if (key->key()==Qt::Key_Escape)
        emit escapePressed();
    else
    {
        if ((key->key() >=48 ) ||
                (key->key() <=57) ||
                (key->key() >=65 ) ||
                (key->key() <= 90) ||
                (key->key() >=97) ||
                (key->key() <=122))
        {
            QLineEdit::keyPressEvent(key);
        }
        else
        {
 
            if (acceptSymbols())
            {
                QLineEdit::keyPressEvent(key);
            }
        }
    }
}

void MyLineEdit::keyPressEvent(QKeyEvent *key)
{

    if (key->key()==Qt::Key_Escape)
        emit escapePressed();
    else
    {
        if ((key->key() >=48 ) ||
                (key->key() <=57) ||
                (key->key() >=65 ) ||
                (key->key() <= 90) ||
                (key->key() >=97) ||
                (key->key() <=122))
        {
            QLineEdit::keyPressEvent(key);
        }
        else
        {

            if (acceptSymbols())
            {
                QLineEdit::keyPressEvent(key);
            }
        }
    }
}

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[wysota]

Your complex if statement is always true.

[naturalpsychic]

Thanks nice spotted

---

Added after 19 minutes:

Found a better way

#include "mylineedit.h"
#include <QKeyEvent>
#include <QRegExpValidator>
MyLineEdit::MyLineEdit(QWidget *parent) :
    QLineEdit(parent)
{
    setMinimumHeight(kDefaultHeight);
    setAcceptSymbols(true);
}
 
void MyLineEdit::keyPressEvent(QKeyEvent *key)
{
    if (key->key()==Qt::Key_Escape)
        emit escapePressed();
    else
 
        QLineEdit::keyPressEvent(key);
}
void MyLineEdit::setAcceptSymbols(const bool val)
{
    this->acceptSymbols_=val;
    if (!acceptSymbols())
    {
        QRegExp validNickname("^[a-zA-Z0-9_]*$");   //alpha-numeric + underscore
 
        QValidator *validator=new QRegExpValidator(validNickname,this);
        setValidator(validator);
 
    }
}
bool MyLineEdit::acceptSymbols(void) const
{
    return this->acceptSymbols_;
}

#include "mylineedit.h"
#include <QKeyEvent>
#include <QRegExpValidator>
MyLineEdit::MyLineEdit(QWidget *parent) :
    QLineEdit(parent)
{
    setMinimumHeight(kDefaultHeight);
    setAcceptSymbols(true);
}

void MyLineEdit::keyPressEvent(QKeyEvent *key)
{
    if (key->key()==Qt::Key_Escape)
        emit escapePressed();
    else
        
        QLineEdit::keyPressEvent(key);
}
void MyLineEdit::setAcceptSymbols(const bool val)
{
    this->acceptSymbols_=val;
    if (!acceptSymbols())
    {
        QRegExp validNickname("^[a-zA-Z0-9_]*$");   //alpha-numeric + underscore
        
        QValidator *validator=new QRegExpValidator(validNickname,this);
        setValidator(validator);
        
    }
}
bool MyLineEdit::acceptSymbols(void) const
{
    return this->acceptSymbols_;
}

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