How to validate a Tree item in Tree Control [VC++] ?

Validating a node in Tree view.

In our product DocuMight client requires cut, copy, paste and delete with multiple selection. Here I occurred a situation to validate previously selected items , but I didn’t find any  direct method in CTreeCtrl to validate a HTREEITEM .

I tried the following code.

bool IsItemExists(CTreeCtrl *pTree,HTREEITEM hItem) {       bool bExists = false;       TVITEM item;       item.hItem = hItem;       item.mask = TVIF_STATE;       item.stateMask = 0;       item.state = 0;       if( TRUE == ::SendMessage(pTree->m_hWnd, TVM_GETITEM, 0, (LPARAM)&item))       {             bExists = true;       }       return bExists; }

In  the above code SendMessage will fail if the hItem is not valid.