Stupid list widget won't clear

[rajeshs]

I faced Same problem, actual problem in currentRowChanged() signal's slot

I have taken one slot for currentRowChanged() signal of listwidget there i am trying to access element like following code, if we clear the list that time also that slot will be get called,so memory crash occurs,

My old code,

connect(myistWidget,SIGNAL(currentRowChanged(int)) ,this,SLOT(changeLabel(int)));

void QZugNummerDlgAction::changeLabel(int position)
{
QString labelText = myistWidget.at(position);//if we clear list memory crash occurs heremyLabel->setText(labelText);
}

New Code, i put the following condition it works properly,

void QZugNummerDlgAction::changeLabel(int position)
{
if(myistWidget->currentRow()!=-1)
{QString labelText = myistWidget.at(position);
myLabel->setText(labelText);
}
}


Thanks,
Rajesh.S

[jacek]

QString labelText = myistWidget.at(position);//if we clear list memory crash occurs here

This shouldn't even compile, as "myistWidget" is a pointer.

What is that "at" method? QListWidget doesn't have such method.

[rajeshs]

Sorry ,one mistake in my code

That is not listwidget, there i am taking one corresponding
Qlist so if we access -1 position from QList crash occurs,

that line is myqlist->at(position).

Thanks,
Rajesh.S

[jacek]

That is not listwidget, there i am taking one corresponding
Qlist so if we access -1 position from QList crash occurs,

OK, that explains everything. Qt docs warn about accessing inexistent items.