wxWidgets - branch moving

Hello!

I want to move a branch with drag&drop in a wxtreectrl.

Here is the function, that I use:

Code:

---

typedef struct sItemRepresentation
{
        wxTreeItemId pTreeItem;
} sItemRepresentation;

void MoveTree(wxTreeItemId &source, wxTreeItemId &dest)
{
        wxTreeItemIdValue cookie;
        wxTreeItemId cdest;

        // 1. Child
        wxTreeItemId child = WxTreeCtrl1->GetFirstChild(source, cookie);
        if (child.IsOk())
        {
                // Add child to destination
                sItemRepresentation selItemRep = m_vItems[child];
                selItemRep.pTreeItem = WxTreeCtrl1->InsertItem(dest,WxTreeCtrl1->GetItemText(selItemRep.pTreeItem));
                m_vItems[selItemRep.pTreeItem] = selItemRep;

                MoveTree(child,selItemRep.pTreeItem);

                // Get next children
                while ((child = WxTreeCtrl1->GetNextChild(child, cookie)).IsOk())
                {


                        selItemRep = m_vItems[child];
                        wxMessageBox(WxTreeCtrl1->GetItemText(selItemRep.pTreeItem), _T("Error"),wxOK | wxICON_ERROR, this);
                        selItemRep.pTreeItem = WxTreeCtrl1->InsertItem(dest,WxTreeCtrl1->GetItemText(selItemRep.pTreeItem));
                        m_vItems[selItemRep.pTreeItem] = selItemRep;

                        MoveTree(child,selItemRep.pTreeItem);

                        child = WxTreeCtrl1->GetNextChild(child, cookie);
                }
        }
}

---

But the moving of a branch does not work correctly. Some treeitems are just not moved (and I do not see a reason therefore).
I already posted it in the wxwidgets forum, but nobody seems to answer.

Can someone please give me a hint?