Insertion dans un Treeview sans doublons

// Déclaration de mon treeview //

TVINSERTSTRUCT tvis;

TVITEMEX tvix, tvinfo;

HTREEITEM ht, htFather, htRoot;

TVITEM tvi;



   tvix.mask = TVIF_TEXT | TVIF_PARAM | TVIF_SELECTEDIMAGE | TVIF_STATE | TVIF_IMAGE | TVIF_SELECTEDIMAGE;

   tvix.pszText = L"Artistes";

   tvix.lParam = 0;

   tvix.stateMask = TVIS_EXPANDED | TVIS_STATEIMAGEMASK ;

   tvix.state = TVIS_EXPANDED;

   tvix.iImage = IDX_DISC;

   tvix.iSelectedImage = tvix.iImage;

   tvis.itemex = tvix;

   tvis.hParent = TVI_ROOT;

   tvis.hInsertAfter = TVI_LAST;

   htRoot = TreeView_InsertItem(hWndTree,&tvis);



   // REMOVE ITS CHECKBOX (STATE IMAGE)

   tvi.mask = TVIF_STATE;

   tvi.hItem = htRoot;

   tvi.stateMask = TVIS_STATEIMAGEMASK;

   tvi.state = 0;

   TreeView_SetItem(hWndTree,&tvi);



// ... dans ma boucle de traitement pour récupérer ma valeur lPa.Artiste



if ( (ht = TreeView_GetChild(hWndTree,htFather)) != NULL ) {

            do {

               tvi.mask = TVIF_PARAM|TVIF_TEXT;

               tvi.hItem = ht;

               tvi.pszText = szToComp;

               tvi.cchTextMax = 256;

              // TreeView_GetItem(hWndTree,&tvi);

               if ( StrCmp(szToComp,lpA.pwszArtist) == 0 ) break;

            } while ( (ht = TreeView_GetNextSibling(hWndTree,ht)) != NULL );

         }



  if ( ht ) {

            // THIS NODE EXISTS ALREADY, MOVE UP WITH IT

            htFather = ht;

            goto NextEntry;

         } else {

            // OTHERWISE, ADD IT AND MOVE UP WITH THIS NEW ONE

            tvix.mask = TVIF_TEXT | TVIF_PARAM | TVIF_SELECTEDIMAGE | TVIF_STATE | TVIF_IMAGE |  TVIF_SELECTEDIMAGE;

            tvix.pszText = lpA.pwszArtist;

            tvix.lParam = 0;

            tvix.stateMask = TVIS_EXPANDED | TVIS_STATEIMAGEMASK;

            tvix.state = TVIS_EXPANDED | TVIS_STATEIMAGEMASK;

            // tvix.iImage = IDX_EMAILFOLDER;

//            tvix.iSelectedImage = tvix.iImage;

            tvis.itemex = tvix;

            tvis.hParent = htFather;

            tvis.hInsertAfter = TVI_LAST;

            htFather = TreeView_InsertItem(hWndTree,&tvis);

         }