Unhandled exception while executing project

[Raylman89]

Hi all!

I have just started developing in QT language but i've got some experience with basic, c++ and some other object oriented languages. I tried some developing with Qdevelop on Ubuntu and all seems works fine but i would like to learn QT for windows developing because, for job reasion, sometimes i need to create windows program.
I decided to install QT on Windows 7 32bit and use visual studio as develop suite. Now all it's working and the program just run fine.
I have written some line of code to try it and, after searching on the net, i've created a small UI with a button and connected the signal Clicked() to a Qmessagebox.
The problems starts here...
I can compile my program without any error or warning and when i start the debug or release process it seems all ok till i get an error:

"Unhandled exception at 0x671d3226 (QtCored4.dll) in TestQT.exe: 0xC0000005: Access violation reading location 0xcdcdcd00."

I realized that this happen only when i try to connect the clicked() signal with my function to display the messagebox. I post the source code and hope someone of you can help me!

Thank you very much,
Michele

TESTQT.H

#ifndef TESTQT_H
#define TESTQT_H

#include <QtGui/QMainWindow>
#include "ui_testqt.h"
#include <QMessageBox>

class TestQT : public QMainWindow, private Ui::TestQTClass
{
	Q_OBJECT

public:
	TestQT(QWidget *parent = 0, Qt::WFlags flags = 0);
	~TestQT();

private slots:
	void Qclick();
	

private:
	Ui::TestQTClass ui;
	
};

#endif // TESTQT_H

MAIN.CPP

#include "testqt.h"
#include <QtGui/QApplication>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	TestQT w;
	w.show();
	

	


	return a.exec();
}

TESTQT.CPP

#include "testqt.h"

TestQT::TestQT(QWidget *parent, Qt::WFlags flags)
	: QMainWindow(parent, flags)
{
	ui.setupUi(this);
	/*QPushButton *button = Bottone new QPushButton(*/
    /*QApplication::translate("childwidget", "Press me"), this);
    button->move(100, 100);
    button->show();*/
	QObject::connect(Bottone,SIGNAL(clicked()),this,SLOT(Qclick()));
}

TestQT::~TestQT()
{
	
}

void TestQT::Qclick()
{
	QMessageBox::information(this,"Titolo","Linkato!!!");
}

[divanov]

It's not possible to identify the problem as you didn't attach ui_testqt.h and ui_testqt.cpp.
You do very strange things in testqt.h and testqt.cpp, so I expect you did something really wrong in TestQTClass::setupUi(...).

This is sample application, which just connects one button to the slot:
http://www.mediafire.com/file/jthy3y...michele.tar.gz

[axeljaeger]

Adding these files will not help so much because they are auto-generated. But the commented part of your posting is not valid C++ code and thus will never pass the compiler.

[divanov]

Adding these files will not help so much because they are auto-generated. But the commented part of your posting is not valid C++ code and thus will never pass the compiler.

If they autogenerated, then it would be nice to have the files, from which they are autogenerated. I guess is this .ui file? In other words the whole project one can try to build and execute oneself to reproduce the problem. Partial source posting causes a lot of guessing.

[axeljaeger]

RIght, the complete compilable project would be nice.