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// Find if item is in data list for( ; it != m_ItemData.end(); ++it ) {     if( std::string(m_Name) == (*it).m_Name ) {         (*it) = newItem;                              // Find and update item in listbox         for( int pos = 0; pos < m_ItemList.GetItemCount(); ++pos ) {                 if( m_ItemList.GetItemText( pos, 1 ) == m_Name ) {                 m_ItemList.DeleteItem( pos );                 break;             }         }         break;     } }