首先定义一个菜单结构
首先定义一个菜单结构 typedef struct menu//定义一个菜单 u8 range_from,range_to; 〃当前显示的项开始及结束序号 u8 itemCount;//项目总数 u8 selected;//当前选择项 u8 *menultems[17];//菜单项目 struct menu **subMenus;//子菜单 struct menu *parent;//上级菜单，如果是顶级则为null void **func;〃选择相应项按确定键后执行的函数 }Menu; Menu MainMenu 〃定义主菜单 0,3,4,0,//默认显示0-3项，总共4项，当前选择第0项 设置 1\x10, 设置 2\x10, 输入指令发送 , ”查询 \x10 } }； Menu searchMenu {〃查询菜单 0,3,6,0, 记帐记录明细 , 未采集记录数 , 设备机号, ”本机IP地址 , ”记录空间大小, 软件版本 } }； Menu *currentMenu;〃当前的菜单 用于显示菜单项 void displayu8 line //显示菜单项并设置选中的项反白 { int i; line 3-currentMenu-range_to-line; Lcd_Fill0 x00; fori 0;i4;i Lcd_Dispi1,0,currentMenu-menu ltems[icurrentMenu-range_from]; highlight0,line,8,255;〃 反白显示指定行 } void funcvoid printfChelloXrXn; 初始化菜单 void initMenu MainMenu.subMenus mallocsizeof MainMenu*4; MainMenu.subMenus[O] NULL;//第1到3项没有子菜单置null,选择后程序会调用 func中相应项中的函数 MainMenu.subMenus[1] NULL; MainMenu.subMenus[2] NULL; MainMenu.subMenus[3] searchMenu;// 第四项查询有子菜单 MainMenu.func mallocsizeoffunc *4; MainMenu.func[0] NULL; MainMenu.func[1] NULL; MainMenu.func⑵func;//当选择了并按了确定，会执行func函数 MainMenu.func[3] NULL; MainMenu.parent NULL;//表示是顶级菜单 searchMenu.subMenus mallocsizeof searchMenu*6 searchMenu.subMenus[O] searchMenu.subMenus[1] searchMenu.subMenus[2] searchMenu.subMenus[3] searchMenu.subMenus[4] searchMenu.subMenus[5] NULL; searchMenu.func mallocsizeofprintf*6; searchMenu.func[O] searchMenu.func[2] searchMenu.func[2] searchMenu.func[3] searchMenu.func[4] searchMenu.func[5] NULL; searchMenu.parent MainMenu;//一级菜单是MainMenu.进入查询子菜单后按返 回键，将会显示这个菜单项 currentMenu MainMenu; main int mainvoid delay_init; uart_init9600; Lcd_lnit; KEY_lnit; initMenu; displaycurrentMenu-selected; while1 { key KEY_Scan; ifkey 0 delay_ms10; continue; } printfkey d is press\r\n,key; switchkey case 12//向上 ifcurrentMenu-selected 0//到了第一项 break; else { currentMenu-selected-; ifcurrentMenu-selected currentMenu-range_from〃更新显示的区域 { currentMenu-range_from currentMenu-selected; currentMenu-range_to currentMenu-range_from3; } displaycurrentMenu-selected; break; } case 8//向下 ifcurrentMenu-selected currentMenu-itemCount-1 break; else currentMenu-selected; ifcurrentMenu-selectedcurrentMenu-range_to currentMenu-range_to currentMenu-selected; currentMenu-range_from currentMenu-range_to-3; } displaycurrentMenu-selected; break; } case 4//Enter 键 ifcurrentMenu-subMenus[currentMenu-selected] NULL { currentMenu currentMenu-subMenus[currentMenu-selected]; displayO; } else ifcurrentMenu-func[currentMenu-selected] NULL currentMenu-func[currentMenu-selected];// 执行相应的函数 displaycurrentMenu-selected;//返回后恢复原来的菜单状态 } } break; } case 3//返回键 ifcurrentMenu-parentNULL//父菜单不为
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