10A中Iterator viewer 如何实现循环查看

可以修改如下函数，其中有注释//mtk的部分是新加的语句 

1. mmi_um_query_indexing() 

 if (i == 0) 

 { 

     /* First one */ 

     result->next_msg_id = ((srv_um_msg_node_struct *)data_list->list)[i + 1].msg_id; 

     result->next_msg_type = ((srv_um_msg_node_struct *)data_list->list)[i + 1].msg_type; 

     result->next_launch_func_ptr = mmi_um_ui_adp_get_viewer_ptr(result->next_msg_type); 

     result->prev_msg_id = ((srv_um_msg_node_struct *)data_list->list)[(data_list->msg_number) -1].msg_id;//mtk 

            result->prev_msg_type = ((srv_um_msg_node_struct *)data_list->list)[(data_list->msg_number) -1].msg_type;//mtk 

            result->prev_launch_func_ptr = mmi_um_ui_adp_get_viewer_ptr(result->prev_msg_type);//mtk     

 } 

 else if (i == (data_list->msg_number - 1)) 

 { 

     /* Last one */ 

     result->prev_msg_id = ((srv_um_msg_node_struct *)data_list->list)[i - 1].msg_id; 

     result->prev_msg_type = ((srv_um_msg_node_struct *)data_list->list)[i - 1].msg_type; 

     result->prev_launch_func_ptr = mmi_um_ui_adp_get_viewer_ptr(result->prev_msg_type); 

     result->next_msg_id = ((srv_um_msg_node_struct *)data_list->list)[0].msg_id;        //mtk 

     result->next_msg_type = ((srv_um_msg_node_struct *)data_list->list)[0].msg_type;    //mtk 

     result->next_launch_func_ptr = mmi_um_ui_adp_get_viewer_ptr(result->next_msg_type); //mtk 

 } 

 else 

 { 

 2.wgui_mv_right_key_down_handler()，注释掉判断语句 

 // if(g_wgui_mv_cat_cntx.curr_msg_num < g_wgui_mv_cat_cntx.total_msg_num) 

 wgui_mv_left_key_down_handler() 

 //if(g_wgui_mv_cat_cntx.curr_msg_num > 1) 

 3.mmi_umms_app_ui_property_status_screen_draw_func()，去掉对第一条最后一条的判断 

 #ifdef __MMI_MMS_ITERATOR_VIEWER__ 

     /*             

     if(index_num == 1) 

     { 

         lnk_func = NULL; 

     } 

     if(index_num == total_num) 

     { 

         rnk_func = NULL; 

     }*/