The tree control of MFC

The class that corresponds to the tree control:

Ctreecontrol

To add a tree node:

1     Htreeitem Hrootnode = M_tvwtree.insertitem (_t (" person ")); 2     Htreeitem Hnode = M_tvwtree.insertitem (_t (" old man "), Hrootnode, tvi_last); 3     Htreeitem Hchildnode = M_tvwtree.insertitem (_t (" man "), Hnode, tvi_last);

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Nm_click Message processing functions:

1 voidCtesttreecontroldlg::onnmclicktree1 (NMHDR *pnmhdr, LRESULT *PResult)2 {3 CPoint PT;4:: GetCursorPos (&PT);5:: ScreenToClient (Pnmhdr->hwndfrom, &PT);6 7 UINT uflags;8Htreeitem Hselecteditem = M_tvwtree.hittest (PT, &uflags);9     if(NULL = =Hselecteditem)Ten     { One         return; A     } -  -     if(Uflags &Tvht_onitem) the     { -CString str =M_tvwtree.getitemtext (hselecteditem); - AfxMessageBox (str); -     } +  -*presult =0; +}

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Tvn_selchanged Message processing functions:

1 voidCtesttreecontroldlg::ontvnselchangedtree1 (NMHDR *pnmhdr, LRESULT *PResult)2 {3Lpnmtreeview Pnmtreeview = reinterpret_cast<lpnmtreeview>(PNMHDR);4 5Htreeitem Hselecteditem =M_tvwtree.getselecteditem ();6     if(NULL = =Hselecteditem)7     {8         return;9     }Ten  OneCString str =M_tvwtree.getitemtext (hselecteditem); A     if(str. IsEmpty ()) -     { -         return; the     } -  - AfxMessageBox (str); -  +*presult =0; -}

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The tree control of MFC