Fill QTableWidget and refresh it with button

[Doppelganger]

Hi all!
Guys please help me. I have QTableWidget in Dialog Window

AddAgentDlg::AddAgentDlg(QWidget *parent)
	: QDialog(parent)
{ 
	ui.setupUi(this);
 
	connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(pressedB()));
	connect(ui.pushButton_3, SIGNAL(clicked()), this, SLOT(addtextureclicked()));
	connect(ui.comboBox, SIGNAL(activated(const QString&)), this, SLOT(opendialog(const QString&)));
	connect(ui.tableWidget, SIGNAL(cellDoubleClicked(0,0)), this, SLOT(addtextureclicked()));
	connect(this, SIGNAL(update1()), this, SLOT(update2()));
	attr = ".3ds";
 
	QDir dir("textures/");
	QFileInfoList dirContent = dir.entryInfoList(QStringList()<< "*.Png", QDir::Files |	QDir::NoDotAndDotDot);
	ui.tableWidget->setColumnCount(5);
	ui.tableWidget->setRowCount(dirContent.size());
	ui.tableWidget->resizeRowsToContents();
	ui.tableWidget->resizeColumnsToContents();
	QTableWidgetItem* addItem = new QTableWidgetItem;
	addItem->setData(Qt::DecorationRole, QPixmap("media/addItem.png").scaled(60,60));
	addItem->setData(Qt::ToolTipRole, QVariant("Add Texture Image"));
	ui.tableWidget->setItem(0,0, addItem);
	Q_FOREACH (QFileInfo fileInfo, dirContent)
	{
		static int row = 0, column = 1, columnNumber = 5;
		QTableWidgetItem* img = new QTableWidgetItem;
		img->setData(Qt::DecorationRole, QPixmap(fileInfo.absoluteFilePath()).scaled(60,60));
		QString str_temp = fileInfo.absoluteFilePath();
		QString str = fileInfo.fileName();
		QVariant str2(str);
		img->setData(Qt::UserRole+1, str2 );
		ui.tableWidget->setItem(row,column++,img);
		if (column > columnNumber) {
			column = 0;
			row++;
		}
	}
 
}

AddAgentDlg::AddAgentDlg(QWidget *parent)
	: QDialog(parent)
{ 
	ui.setupUi(this);
	
	connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(pressedB()));
	connect(ui.pushButton_3, SIGNAL(clicked()), this, SLOT(addtextureclicked()));
	connect(ui.comboBox, SIGNAL(activated(const QString&)), this, SLOT(opendialog(const QString&)));
	connect(ui.tableWidget, SIGNAL(cellDoubleClicked(0,0)), this, SLOT(addtextureclicked()));
	connect(this, SIGNAL(update1()), this, SLOT(update2()));
	attr = ".3ds";
	
	QDir dir("textures/");
	QFileInfoList dirContent = dir.entryInfoList(QStringList()<< "*.Png", QDir::Files |	QDir::NoDotAndDotDot);
	ui.tableWidget->setColumnCount(5);
	ui.tableWidget->setRowCount(dirContent.size());
	ui.tableWidget->resizeRowsToContents();
	ui.tableWidget->resizeColumnsToContents();
	QTableWidgetItem* addItem = new QTableWidgetItem;
	addItem->setData(Qt::DecorationRole, QPixmap("media/addItem.png").scaled(60,60));
	addItem->setData(Qt::ToolTipRole, QVariant("Add Texture Image"));
	ui.tableWidget->setItem(0,0, addItem);
	Q_FOREACH (QFileInfo fileInfo, dirContent)
	{
		static int row = 0, column = 1, columnNumber = 5;
		QTableWidgetItem* img = new QTableWidgetItem;
		img->setData(Qt::DecorationRole, QPixmap(fileInfo.absoluteFilePath()).scaled(60,60));
		QString str_temp = fileInfo.absoluteFilePath();
		QString str = fileInfo.fileName();
		QVariant str2(str);
		img->setData(Qt::UserRole+1, str2 );
		ui.tableWidget->setItem(row,column++,img);
		if (column > columnNumber) {
			column = 0;
			row++;
		}
	}

}

To copy to clipboard, switch view to plain text mode 

Is it right? How can I make it update via pushButton? ui.tableWidget->update() nor repaint doesn't work.