Enabling buttons when lineEdit has text

[k12yp70n]

Hi there folks,

I wrote a piece of code that is supposed to put a button enabled (previously grayed out)

declaration:

public slots:
    void allowinput();
signals:
    void allfieldsfull();

public slots:
    void allowinput();
signals:
    void allfieldsfull();

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implementation:

adddialog::adddialog() {
    setupUi(this);    
    connect (this, SIGNAL (allfieldsfull()), this, SLOT (allowinput()));
    connect (pushButton_Cancel, SIGNAL (clicked()), this, SLOT (close()));
    if (lineEdit_name->text() != " ") {
        emit allfieldsfull();
    }
}
 
void adddialog::allowinput() {
    pushButton_ok->setEnabled(true);
}

adddialog::adddialog() {
    setupUi(this);    
    connect (this, SIGNAL (allfieldsfull()), this, SLOT (allowinput()));
    connect (pushButton_Cancel, SIGNAL (clicked()), this, SLOT (close()));
    if (lineEdit_name->text() != " ") {
        emit allfieldsfull();
    }
}

void adddialog::allowinput() {
    pushButton_ok->setEnabled(true);
}

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the problem is: it's not working!

any solutions? code samples would be very much appreciated.

Thanks in advance,