QTreeWidget - Parsing Data.

[Preeteesh]

Hi,

I have a QTreeWidget. I need to parse data from it and write it to a file. Can some one tell me how to read QTreeWidgetItems from QTreeWidget.

Please post some code if possible.

Thanks..

[marcel]

One way is to create a recursive function that traverses the tree.
I assume you only want to save the data in the leaf nodes.

void SomeClass::traverseTree(QTreeWidgetItem root) 
{
  if( root && root->childCount()) 
  {
    int childCount = root->childCount();
    for( int i = 0; i != childCount(); i++ )
      traverseTree( root->child(i);
    //Assuming you have any extra data in items that are not terminal nodes, 
    //then you can save it here.
  }
  else if( !root->childCount() ) //this means it is a leaf
  {
   //save whatever data you have in your item in the file.
  }
}

void SomeClass::traverseTree(QTreeWidgetItem root) 
{
  if( root && root->childCount()) 
  {
    int childCount = root->childCount();
    for( int i = 0; i != childCount(); i++ )
      traverseTree( root->child(i);
    //Assuming you have any extra data in items that are not terminal nodes, 
    //then you can save it here.
  }
  else if( !root->childCount() ) //this means it is a leaf
  {
   //save whatever data you have in your item in the file.
  }
}

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This should pretty much work.

Regards

[Preeteesh]

Hi,

Thats seems good but how to get root node that i will pass to this function. Also i need to save Root node data as well as leaf node in file. Below is sample.

*****RootNode1*****
Leaf Node1
Leaf Node2
*****RootNode2*****
Leaf Node1
Leaf Node2

Thanks...

[marcel]

You can obtain it with QTreeWidget::invisibleRootItem.
You must call the method I've given you only once, with this item as parameter.

Regards