[SOLVED] How to add tabs dynamically to a QTabWidget?

[madcat2709]

Hey Guys!

As you all can see I'm new to Qt and to this forum so please be patient with me ;-)
After playing around with a few tutorials I considered myself to be able to design a mainwindow-application that features dynamic tabs. That's means I want to allow the user to add a new instance of a predesigned tab while the program is running. I used the Qt Designer to build the forms. So here is my code, I hope you guys can help me. Thank you for your attention.

The QAction "actionNeues_PlotTab" is part of the menubar in the mainwindow and after compiling it runs correctly, means I get to read my qDebug messages. So it's basicly all about the addPlotTab() slot I guess. The Ui_PlotTab class is also something I generated with the Qt Designer and hopefully adds the right child-widgets to the one widget that will become my new tab.

Compiling doesn't make any trouble but when running and using the menubar entry that should reveal a new tab nothing happens although the new tabs seem to have an index.

mainwindowimpl.h

#ifndef MAINWINDOWIMPL_H
#define MAINWINDOWIMPL_H
//
#include <QMainWindow>
#include "ui_mainwindow.h"
//
class MainWindowImpl : public QMainWindow, public Ui::MainWindow
{
Q_OBJECT
public:
	MainWindowImpl( QWidget * parent = 0, Qt::WFlags f = 0 );
private slots:
	void addPlotTab();
};
#endif

#ifndef MAINWINDOWIMPL_H
#define MAINWINDOWIMPL_H
//
#include <QMainWindow>
#include "ui_mainwindow.h"
//
class MainWindowImpl : public QMainWindow, public Ui::MainWindow
{
Q_OBJECT
public:
	MainWindowImpl( QWidget * parent = 0, Qt::WFlags f = 0 );
private slots:
	void addPlotTab();
};
#endif

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mainwindowimpl.cpp

#include "mainwindowimpl.h"
#include "ui_plottab.h"
#include <QtGui>
//
MainWindowImpl::MainWindowImpl( QWidget * parent, Qt::WFlags f) 
	: QMainWindow(parent, f)
{
	setupUi(this);
 
	connect(actionNeues_PlotTab, SIGNAL(activated()), this, SLOT(addPlotTab()));
}
//
void MainWindowImpl::addPlotTab()
{
	QWidget NewTab;
	QString name="NewTab";
	Ui_PlotTab Ui_NewTab;
	Ui_NewTab.setupUi(&NewTab);;
	tabWidget->setUpdatesEnabled(true);
	tabWidget->addTab(&NewTab, name);
	int a = tabWidget->indexOf(&NewTab);
	QWidget NewTab2;
	QString name2="NewTab2";
	Ui_NewTab.setupUi(&NewTab2);
	tabWidget->addTab(&NewTab2, name2);
	int b = tabWidget->indexOf(&NewTab2);
	qDebug() << "I'm still not working!" << a << "\t" << b;
};

#include "mainwindowimpl.h"
#include "ui_plottab.h"
#include <QtGui>
//
MainWindowImpl::MainWindowImpl( QWidget * parent, Qt::WFlags f) 
	: QMainWindow(parent, f)
{
	setupUi(this);

	connect(actionNeues_PlotTab, SIGNAL(activated()), this, SLOT(addPlotTab()));
}
//
void MainWindowImpl::addPlotTab()
{
	QWidget NewTab;
	QString name="NewTab";
	Ui_PlotTab Ui_NewTab;
	Ui_NewTab.setupUi(&NewTab);;
	tabWidget->setUpdatesEnabled(true);
	tabWidget->addTab(&NewTab, name);
	int a = tabWidget->indexOf(&NewTab);
	QWidget NewTab2;
	QString name2="NewTab2";
	Ui_NewTab.setupUi(&NewTab2);
	tabWidget->addTab(&NewTab2, name2);
	int b = tabWidget->indexOf(&NewTab2);
	qDebug() << "I'm still not working!" << a << "\t" << b;
};

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main.cpp

#include <QApplication>
#include "mainwindowimpl.h"
//
int main(int argc, char ** argv)
{
	QApplication app( argc, argv );
	MainWindowImpl win;
	win.show(); 
	app.connect( &app, SIGNAL( lastWindowClosed() ), &app, SLOT( quit() ) );
	return app.exec();
}

#include <QApplication>
#include "mainwindowimpl.h"
//
int main(int argc, char ** argv)
{
	QApplication app( argc, argv );
	MainWindowImpl win;
	win.show(); 
	app.connect( &app, SIGNAL( lastWindowClosed() ), &app, SLOT( quit() ) );
	return app.exec();
}

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