accessing my own class-instances

[jacek]

You can use a cast:

foreach( QListWidgetITem *item, listMassnahmen->selectedItems() ) {
    cMassnahme * nameItem = dynamic_cast< cMassnahme * >( item );
    if( nameItem != 0 ) {
        filterMassnahmen << nameItem->getID();
    }
    else {
       // error: not a cMassnahme?
    }
}

foreach( QListWidgetITem *item, listMassnahmen->selectedItems() ) {
    cMassnahme * nameItem = dynamic_cast< cMassnahme * >( item );
    if( nameItem != 0 ) {
        filterMassnahmen << nameItem->getID();
    }
    else {
       // error: not a cMassnahme?
    }
}

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[mikro]

Thank you, i have meanwhile found a similar solution (wondering that i was able to do something rather similar i went through the code there). Now i do:

filterMassnahmen.clear();
    QList<QListWidgetItem *> items = listMassnahmen->selectedItems();
    for (int i = 0; i < items.size(); ++i) {
        cMassnahme* anl = (cMassnahme*) items.at(i);
        filterMassnahmen << anl->getID();
    }

filterMassnahmen.clear();
    QList<QListWidgetItem *> items = listMassnahmen->selectedItems();
    for (int i = 0; i < items.size(); ++i) {
        cMassnahme* anl = (cMassnahme*) items.at(i);
        filterMassnahmen << anl->getID();
    }

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so seems i can easily convert a single item to cMassnahme but not the complete QList. But i have to acknowledge i still don't understand this typecasting thingy... can you tell me where i can read about it?

[jacek]

can you tell me where i can read about it?

http://www.qtcentre.org/forum/f-c-pr...-books-29.html

My personal favorite is "C++ Primer" by Stanley B. Lippman and Josee Lajoie.
There is also a book available on-line: http://mindview.net/Books/TICPP/ThinkingInCPP2e.html