Win CE eapplication created with Qt 4.7.1 crashes

[dpatel]

Hi,
I am trying to create Qt application for win ce 6 professional. I downloaded qt_everywhere_opensource and compiled it for wince 6 using the steps described here. The compilation was successful.

Here is my complete setup
Windows 7 64 bit machine
Visual Studio 2005
Qt_VS addin 1.1.7
Qt 4.7.1

I am able to run the sample applications that came with Windows Mobile 6 SDK using VS 2005. And it brings up the emulator and runs the application.

Now I create a Qt application using Qt Creator (directly creating Qt application in VS fails). the application has a button and a text box. When you press button text is displayed in textbox.
I create vsproj file using qmake and open the application in vs2005. It compiles fine but when I try to run it brings up the emulator but gives error shown in attached image.

VS-wince-qt error.png

Can any one tell me what is the issue here? Will I have to install VS again or do I need another version of VS?

Thanks

[high_flyer]

Can any one tell me what is the issue here?

Most probably the "issue" is a bug in your code.

Post your code so that we can have a look.

[dpatel]

Here is the code

MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
 
namespace Ui {
    class MainWindow;
}
 
class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
protected:
    void changeEvent(QEvent *e);
public slots:
    void on_btn1_clicked();
 
private:
    Ui::MainWindow *ui;
};

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
    class MainWindow;
}

class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();

protected:
    void changeEvent(QEvent *e);
public slots:
    void on_btn1_clicked();

private:
    Ui::MainWindow *ui;
};

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MainWindow.cpp

#include "MainWindow.h"
#include "ui_MainWindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}
 
MainWindow::~MainWindow()
{
    delete ui;
}
 
void MainWindow::on_btn1_clicked()
{
    ui->txt1->setText("Hello World");
}
 
void MainWindow::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

#include "MainWindow.h"
#include "ui_MainWindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::on_btn1_clicked()
{
    ui->txt1->setText("Hello World");
}

void MainWindow::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

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I haven't changed main.cpp .

[high_flyer]

I see no problem in your code.
The error you are getting however, sounds like it might be related to 64bit problem.
Have a look in your project settings, and make sure you are compiling and linking against the WinCE Qt.

[dpatel]

Thanks high_flyer.

I am also thinking that the issue is with setup. I mean VS2005 with Win 7 64 bit. I tried on another machine with Win XP 32 bit with VS2005 and it works fine. I can bring up the application in emulator and when I press button I see the message in text box. But on device when I press button text box is not updated.
The issue now is when I press button nothing happens ("Hello world" should be printed in text box).
The code is same as I posted above.

Let me know if you have any idea about this.
thanks