Data not being added to my QTableView?

[steg90]

Hi,

I have the following code :

CSendMessage::CSendMessage(QWidget *parent)
	: QWidget(parent)
{
	ui.setupUi(this);
 
	this->setMinimumHeight(400);
	this->setMinimumWidth(600);
 
	QStandardItemModel model(4, 4);
        ui.tableView->setModel(&model);
 
	SliderDelegate delegate;
        ui.tableView->setItemDelegate( &delegate ); 
 
	for (int row = 0; row < 4; ++row) {
         for (int column = 0; column < 4; ++column) {
 		QStandardItem *item = new QStandardItem(QString("row %0, column %1").arg(row).arg(column));
			model.setItem(row, column, item);
         }
    } 
 
}

CSendMessage::CSendMessage(QWidget *parent)
	: QWidget(parent)
{
	ui.setupUi(this);

	this->setMinimumHeight(400);
	this->setMinimumWidth(600);

	QStandardItemModel model(4, 4);
        ui.tableView->setModel(&model);

	SliderDelegate delegate;
        ui.tableView->setItemDelegate( &delegate ); 

	for (int row = 0; row < 4; ++row) {
         for (int column = 0; column < 4; ++column) {
 		QStandardItem *item = new QStandardItem(QString("row %0, column %1").arg(row).arg(column));
			model.setItem(row, column, item);
         }
    } 

}

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Is there any reason why the above code does not put items into the table view?

The class that holds the table view is a standard QT ui one with a table view on the form and is added to a QMdiSubWindow as a widget.

This is added as follows :

m_pSendMessage = new CSendMessage( this );
		m_pSendMessageWindow = new QMdiSubWindow;
		m_pSendMessageWindow->setWidget( m_pSendMessage );
		m_pSendMessageWindow->setAttribute( Qt::WA_DeleteOnClose );
 
		QMdiSubWindow* subWindow = m_pworkspace->addSubWindow( m_pSendMessageWindow );
		subWindow->setWindowIcon(QIcon(QString::fromUtf8(":/QTCanMonitor/Resources/Envelope.png"))); 
		m_pSendMessageWindow->show();

m_pSendMessage = new CSendMessage( this );
		m_pSendMessageWindow = new QMdiSubWindow;
		m_pSendMessageWindow->setWidget( m_pSendMessage );
		m_pSendMessageWindow->setAttribute( Qt::WA_DeleteOnClose );

		QMdiSubWindow* subWindow = m_pworkspace->addSubWindow( m_pSendMessageWindow );
		subWindow->setWindowIcon(QIcon(QString::fromUtf8(":/QTCanMonitor/Resources/Envelope.png"))); 
		m_pSendMessageWindow->show();

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I'm confused?

Regards,
Steve

[wysota]

You are creating the model on stack. It gets destroyed when you leave the function. Create it on heap (using operator new) instead.