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Thread: List all elements of a QTreeWidget from top to bottom

  1. #1
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    Unhappy List all elements of a QTreeWidget from top to bottom

    I'm having dificulties getting all the values of a N levels QTreeWidget by the folloying order:

    For example:

    A1
    B1
    B2
    B3
    C1
    C2
    D1
    D2
    C3

    and i want to put them in an array like: A1 B1 B2 B3 C1 C2 D1 D2 C3

    I'm having big problems trying to find this algorithm. For a finit levels tree i can do it but for N its more dificult.

    Someone can help me with this?

    Maybe i can use the model for that?

  2. #2
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    Default Re: List all elements of a QTreeWidget from top to bottom

    I'm not sure if I follow what you mean by the letters and numbers but isn't that a simple case of descending node traversal using a recursive call? First "visit" yourself, then visit each of your children in order by calling the same visiting function on them.

    Something like:
    Qt Code:
    1. void visitTree(QStringList &list, QTreeWidgetItem *item){
    2. list << item->text(0);
    3. for(int i=0;i<item->childCount(); ++i)
    4. visitTree(list, item->child(i));
    5. }
    6.  
    7. QStringList visitTree(QTreeWidget *tree) {
    8. for(int i=0;i<tree->topLevelItemCount();++i)
    9. visitTree(list, tree->topLevelItem(i));
    10. return list;
    11. }
    12. //...
    13. QStringList result = visitTree(myTree);
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  3. #3
    Join Date
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    Default Re: List all elements of a QTreeWidget from top to bottom

    Thanks a lot. It solved my problem

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