i have a problem when open a window and close it?

[mismael]

hello everybody;
i have a problem when opening a window and close it for 30 times the application crashes and this is done in every window here are the code i used to open the window

void MainWindow::openSupportWindow()
{
    if(!m_pSupportWindow)
    {
        m_pSupportWindow = new DownloadMainWindow(this);
        m_pSupportWindow->show();
        m_pSupportWindow->loadCustomPage(SUPPORT);
        connect(m_pSupportWindow, SIGNAL(destroyed()), this, SLOT(nullPointer()));
    }
}

void MainWindow::nullPointer()
{
    m_pFeedBackWindow = NULL;
    m_pSupportWindow = NULL;
    m_pUpdateWindow = NULL;
}

and here are the code i used in the window itself

setAttribute(Qt::WA_DeleteOnClose);

why my application crashes when i open the window and close it for approximately 30 times?

[divanov]

You can simplify your code by using QPointer:
http://doc.trolltech.com/4.6/qpointer.html

What is strange in your code is that you set to 0 three pointers, when one window is destroyed.

What is the signal, which ends your application execution, is it SIGABRT or SIGSEGV or something else?
Did you try to analyse core-dumps?

[divanov]

I'm pretty sure there is a bug in your code, so this example is not going to help you, but just for a reference there is an article in a wiki demonstrating dynamic window creation and destruction:
http://wiki.forum.nokia.com/index.ph...ows_in_Maemo_5

[divanov]

I just wonder why did you provide much more essential details on maemo-developer mailing list than here.
http://lists.maemo.org/pipermail/mae...ry/024933.html
Don't you think multi-posting and hiding relevant information is kind of unfriendly behaviour?