Hi, I want to subclass QTreeWidgetItem and use it within a QTreeWidget subclass, but I do not want to reimplement all functions from QTreeWidgetItem nore QTreeWidget.

So far so god.

Additionally I need the option to dynamically update the TreeWidget.

I create a method to search for applicable TreeWidgetItems:



Qt Code: 
  1. /*! search from root (if root is zer0, search all nodes) all children for the Desired Drawable
  2.  */
  3. TreeWidgetItem* TreeWidget::deepSearchByPtr(TreeWidgetItem *root, Drawable *d){
  4.     qDebug() << "DFS 0";
  5.     if (root == 0){
  6.     }
  7.     else if (reinterpret_cast<Drawable*>(root->ptr()) == d){
  8.         qDebug() << "DFS B";
  9.         return root;
  10.     }
  11.  
  12.     qDebug() << "DFS C";
  13.     TreeWidgetItem *ret;
  14.     TreeWidgetItem *child;
  15.     qDebug() << "DFS D";
  16.     int count(0);
  17.     if (root==0){
  18.         count = invisibleRootItem()->childCount();
  19.     }
  20.     else{
  21.         count = root->childCount();
  22.     }
  23.     for(int q(0); q<count; ++q){
  24.         qDebug() << "DFS LOOP A";
  25.         child = reinterpret_cast<TreeWidgetItem*>(root->child(q));
  26.         qDebug() << "DFS LOOP B";
  27.         if (child == NULL){
  28.             qDebug() << "DFS LOOP C";
  29.             continue;
  30.         }
  31.         qDebug() << "DFS LOOP D";
  32.         ret = deepSearchByPtr(child, d);
  33.         qDebug() << "DFS LOOP E";
  34.         if (ret != NULL){
  35.             qDebug() << "DFS LOOP F";
  36.             return ret;
  37.         }
  38.     }
  39.  
  40.     return NULL;
  41. }
To copy to clipboard, switch view to plain text mode 

The Problem with that is, that it fails right before
Qt Code: 
  1. qDebug() << "DFS LOOP B";
To copy to clipboard, switch view to plain text mode 
though all children actually are TreeWidgetItem s.

Note: falling back to QTreeWidgetItems is not an option, as they hold way more data than ptr.

Note:
My Custom Type is called "TreeWidgetItem" and "TreeWIdget"

can anybody plx help me to fix this issue.

Sincerely

soxs060389

P.S. allready wasted hours on that subject...