RESOURCE DIALOG r_enter_user_name
 {
 flags = EGeneralQueryFlags;
 buttons = R_AVKON_SOFTKEYS_OK_CANCEL;
 items =
   {
   DLG_LINE
     {
     type = EAknCtQuery;
     id = EGeneralQuery;
     control = AVKON_DATA_QUERY
       {
       layout = EDataLayout;
       label = qtn_label_your_name;
       control = EDWIN
         {
         flags = EEikEdwinNoHorizScrolling | EEikEdwinResizable;
         width = 5;
         lines = 1;
         maxlength = 100;
         // If you want full screen use 6 here
         max_view_height_in_lines = 6;
         // if you have the line above, you must have this.
         // It's calculable from LAF
         base_line_delta = 21;
         };
       };
     }
   };
 }

   TBuf<256> userName;
   CAknTextQueryDialog* dlg;

   dlg = CAknTextQueryDialog::NewL(userName);
   dlg->SetPredictiveTextInputPermitted(ETrue);
   if( dlg->ExecuteLD( R_ENTER_USER_NAME ))
       {
           SavePreferencesL()
       }