Validating QTable's cell

[soumyadeep_pan]

I want to validate float values in a particular QTable's cell, so I created a custom table item a set it to the particular cell. I am able to get the line edit of the cell using the createEditor(), and able to validate the values. But When ever I have click that particular cell the previous existing values are reset to NULL, I want to keep the old values present in the cell. I have attached the sample code I have used, I also find out the problem in my code, the problem is I am creating new line edit object inside the createEditor() (tableitem.h), which is the problem. But if I do not create a new object how I can achieve my requirement for validating a cell. Please help me ..

[soumyadeep_pan]

I want to validate float values in a particular QTable's cell, so I created a custom table item a set it to the particular cell. I am able to get the line edit of the cell using the createEditor(), and able to validate the values. But When ever I have click that particular cell the previous existing values are reset to NULL, I want to keep the old values present in the cell. I have attached the sample code I have used, I also find out the problem in my code, the problem is I am creating new line edit object inside the createEditor() (tableitem.h), which is the problem. But if I do not create a new object how I can achieve my requirement for validating a cell. Please help me ..

Can any body help me....thank in advance ....

[soumyadeep_pan]

Can any body help me....thank in advance ....

I got the solution for the problem ... sorry for posting already solved problems.... here is my code for example, please post if any thing wrong ... thanks in advance ....

/***  Float Table Item header file ****/
class FloatTableItem : public QTableItem
{
public : 
	FloatTableItem ( QTable * in_qTable, EditType in_Et, const QString & in_strText );
	virtual QWidget * createEditor () const ;
	void setContentFromEditor( QWidget *w );
	virtual int rtti() const;
};
/***  Float Table Item header file ****/
 
 
/***  Float Table Item implementation .cpp file ****/
 
FloatTableItem::FloatTableItem ( QTable * in_qTable, EditType in_Et, const QString & in_strText ) : QTableItem (in_qTable, in_Et, in_strText)
{
    return;
}
 
QWidget* FloatTableItem::createEditor() const
{
    QLineEdit* le_Temp = (QLineEdit *) (QTableItem::createEditor());
    le_Temp->setMaxLength(6);
 
    if (le_Temp)
    { 
	QRegExp rx( "[0-9]{0,3}[.]?[0-9]{0,2}");
	QValidator* validator = new QRegExpValidator( rx, le_Temp );
	le_Temp->setValidator(validator);
    }
   return le_Temp;
} 
 
void FloatTableItem::setContentFromEditor( QWidget *in_qWidget )
{
    if ( in_qWidget->inherits( "QLineEdit" ) )
        setText( ( (QLineEdit*)in_qWidget )->text() );
    else
        QTableItem::setContentFromEditor( in_qWidget );
}
 
int FloatTableItem::rtti() const
{
    return 32355;
}
/***  Float Table Item implementation .cpp file ****/

/***  Float Table Item header file ****/
class FloatTableItem : public QTableItem
{
public : 
	FloatTableItem ( QTable * in_qTable, EditType in_Et, const QString & in_strText );
	virtual QWidget * createEditor () const ;
	void setContentFromEditor( QWidget *w );
	virtual int rtti() const;
};
/***  Float Table Item header file ****/


/***  Float Table Item implementation .cpp file ****/

FloatTableItem::FloatTableItem ( QTable * in_qTable, EditType in_Et, const QString & in_strText ) : QTableItem (in_qTable, in_Et, in_strText)
{
    return;
}

QWidget* FloatTableItem::createEditor() const
{
    QLineEdit* le_Temp = (QLineEdit *) (QTableItem::createEditor());
    le_Temp->setMaxLength(6);
        
    if (le_Temp)
    { 
	QRegExp rx( "[0-9]{0,3}[.]?[0-9]{0,2}");
	QValidator* validator = new QRegExpValidator( rx, le_Temp );
	le_Temp->setValidator(validator);
    }
   return le_Temp;
} 

void FloatTableItem::setContentFromEditor( QWidget *in_qWidget )
{
    if ( in_qWidget->inherits( "QLineEdit" ) )
        setText( ( (QLineEdit*)in_qWidget )->text() );
    else
        QTableItem::setContentFromEditor( in_qWidget );
}

int FloatTableItem::rtti() const
{
    return 32355;
}
/***  Float Table Item implementation .cpp file ****/

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