QListWidget -> DoubleClick

[Ifoerster]

Hello,

I have a problem to send data from a doubleclick QListWidgetItem from a sub window to the parent window. I use the default connection:

connect(ui.driveList,
            SIGNAL(itemDoubleClicked(QListWidgetItem *)),
            this, SLOT(openDiskWrap(QListWidgetItem *)));

connect(ui.driveList,
            SIGNAL(itemDoubleClicked(QListWidgetItem *)),
            this, SLOT(openDiskWrap(QListWidgetItem *)));

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With this I call the function in the sub window:

void OpenProject::openDiskWrap(QListWidgetItem *item)
{
    int currentRow = ui.driveList->currentRow();
    ((MainWindow*)this->parentWidget())->openDisk(currentRow);
    //openDisk(int index)
 
}

void OpenProject::openDiskWrap(QListWidgetItem *item)
{
    int currentRow = ui.driveList->currentRow();
    ((MainWindow*)this->parentWidget())->openDisk(currentRow);
    //openDisk(int index)

}

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It works so far ok, but it seems that there is a sandbox because in Mainwindow / OpenDisk I get read errors (Access violation) in a QStringArray and other members of MainWindow.
So I think I have a logical flaw inside. What I finaly need to do is to send the Index of the driveList to the Mainwindow to open the selected drive.

Any suggestion help?

Ingo

[ChrisW67]

Hard to say with so little information. The likely options are that parentWidget() is null or not a MainWindow, or that currentIndex is -1 and openDisk() uses it as an out-of-bounds index to a list. Your debugger backtrace and exit error message will tell you which.