I'm trying to use custom items in QTreeWidget. e.g:
tree_item.h Code: 
  1. #include <QTreeWidgetItem>

  2. #include "unit.h"    // header with any class

  3.  
  4. class tree_item : public QTreeWidgetItem

  5. {

  6. public:

  7. 	tree_item(unit *object);

  8.  
  9. 	unit *object() const;

  10. 	// ...

  11. };
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tree_item.cpp Code: 
  1. #include "tree_item.h"

  2.  
  3. tree_item::tree_item(unit *object)

  4.       : QTreeWidgetItem(SOME_USER_TYPE)

  5. {

  6. 	setText(0, *(object->name()));

  7. }

  8.  
  9. // ...
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I can add my custom item to a QTreeWidget. But when I'm trying to get it back, tree is returning item of type QTreeWidgetItem.. In short, I'm loosing data

main.cpp Code: 
  1. // ...

  2.  
  3. QTreeWidget *tree = new QTreeWidget();

  4. tree_item *item = new tree_item(new unit(10, 12));

  5. tree->addTopLevelItem(item);

  6.  
  7. // ...
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This part of code works properly, I can see my object's name in column 0. But if I use,
for example: tree->itemAt(some_point) of course it gives me item of type QTreeWidgetItem* not tree_item*

Can someone give me ideas? (If possible, without inheriting QTreeWidget)

Thanks in advance