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運(yùn)行效果圖:
選擇查詢項(xiàng)：
選擇查詢項(xiàng)并按確定鍵后：
此時(shí)按返回鍵，將會(huì)返回到第二個(gè)圖片中的界面
首先定義一個(gè)菜單結(jié)構(gòu)
- typedef struct menu//定義一個(gè)菜單
- {
- u8 range_from,range_to; //當(dāng)前顯示的項(xiàng)開始及結(jié)束序號(hào)
- u8 itemCount;//項(xiàng)目總數(shù)
- u8 selected;//當(dāng)前選擇項(xiàng)
- u8 *menuItems[17];//菜單項(xiàng)目
- struct menu **subMenus;//子菜單
- struct menu *parent;//上級(jí)菜單 ,如果是頂級(jí)則為null
- void (**func)();//選擇相應(yīng)項(xiàng)按確定鍵后執(zhí)行的函數(shù)
- }Menu;
- Menu MainMenu = { //定義主菜單
- 0,3,4,0,//默認(rèn)顯示0-3項(xiàng)，總共4項(xiàng)，當(dāng)前選擇第0項(xiàng)
- {
- "設(shè)置1 ",
- "設(shè)置2 ",
- "輸入指令發(fā)送 ",
- "查詢 "
- }
- };
- Menu searchMenu = {//查詢菜單
- 0,3,6,0,
- {
- "記帳記錄明細(xì) ",
- "未采集記錄數(shù) ",
- "設(shè)備機(jī)號(hào) ",
- "本機(jī)IP地址 ",
- "記錄空間大小 ",
- "軟件版本 "
- }
- };
- Menu *currentMenu;//當(dāng)前的菜單
- 用于顯示菜單項(xiàng)
- void display(u8 line) //顯示菜單項(xiàng)并設(shè)置選中的項(xiàng)反白
- {
- int i;
- line = 3-(currentMenu->range_to-line);
- Lcd_Fill(0x00);
- for(i = 0;i<4;i++)
- {
- Lcd_Disp(i+1,0,currentMenu->menuItems[i+currentMenu->range_from]);
- }
- highlight(0,line,8,255);//反白顯示指定行
- }
- void func(void)
- {
- printf("hello");
- }
- 初始化菜單:
- void initMenu()
- {
- MainMenu.subMenus = malloc(sizeof(&MainMenu)*4);
- MainMenu.subMenus[0] = NULL;//第1到3項(xiàng)沒有子菜單置null,選擇后程序會(huì)調(diào)用func中相應(yīng)項(xiàng)中的函數(shù)
- MainMenu.subMenus[1] = NULL;
- MainMenu.subMenus[2] = NULL;
- MainMenu.subMenus[3] = &searchMenu;//第四項(xiàng)查詢有子菜單
- MainMenu.func = malloc(sizeof(&func)*4);
- MainMenu.func[0] = NULL;
- MainMenu.func[1] = NULL;
- MainMenu.func[2] = &func;//當(dāng)選擇了并按了確定，會(huì)執(zhí)行func函數(shù)
- MainMenu.func[3] = NULL;
- MainMenu.parent = NULL;//表示是頂級(jí)菜單
-
- searchMenu.subMenus = malloc(sizeof(&searchMenu)*6);
- searchMenu.subMenus[0] = searchMenu.subMenus[1] = searchMenu.subMenus[2] = searchMenu.subMenus[3] = searchMenu.subMenus[4] = searchMenu.subMenus[5] = NULL;
- searchMenu.func = malloc(sizeof(&printf)*6);
- searchMenu.func[0] = searchMenu.func[2] = searchMenu.func[2] = searchMenu.func[3] = searchMenu.func[4] = searchMenu.func[5] = NULL;
- searchMenu.parent = &MainMenu;//上一級(jí)菜單是MainMenu.進(jìn)入查詢子菜單后按返回鍵，將會(huì)顯示這個(gè)菜單 項(xiàng)
-
- currentMenu = &MainMenu;
-
- }
- main
- int main(void)
- {
-
- delay_init();
- uart_init(9600);
- Lcd_Init();
- KEY_Init();
- initMenu();
- display(currentMenu->selected);
- while(1)
- {
- key = KEY_Scan();
- if(key == 0)
- {
- delay_ms(10);
- continue;
- }
- printf("key %d is press",key);
- switch(key)
- {
- case 12://向上
- if(currentMenu->selected == 0)//到了第一項(xiàng)
- break;
- else
- {
- currentMenu->selected--;
- if(currentMenu->selected < currentMenu->range_from)//更新顯示的區(qū)域
- {
- currentMenu->range_from = currentMenu->selected;
- currentMenu->range_to = currentMenu->range_from+3;
- }
- display(currentMenu->selected);
- break;
- }
- case 8://向下
- if(currentMenu->selected == currentMenu->itemCount-1)
- break;
- else
- {
- currentMenu->selected++;
- if(currentMenu->selected>currentMenu->range_to)
- {
- currentMenu->range_to = currentMenu->selected;
- currentMenu->range_from = currentMenu->range_to-3;
- }
- display(currentMenu->selected);
- break;
- }
- case 4://Enter鍵
- {
- if(currentMenu->subMenus[currentMenu->selected] !=NULL)
- {
- currentMenu = currentMenu->subMenus[currentMenu->selected];
- display(0);
- }
- else
- {
- if(currentMenu->func[currentMenu->selected] != NULL)
- {
- currentMenu->func[currentMenu->selected]();//執(zhí)行相應(yīng)的函數(shù)
- display(currentMenu->selected);//返回后恢復(fù)原來的菜單狀態(tài)
- }
- }
- break;
- }
- case 3://返回鍵
- {
- if(currentMenu->parent!=NULL)//父菜單不為空，將顯示父菜單
- {
- currentMenu = currentMenu->parent;
- display(currentMenu->selected);
- }
- break;
- }
- default:
- break;
- }
- delay_ms(10);
- }
- }
ST公司關(guān)于STM3210E-EVAL演示版本的工程中就有菜單的代碼，現(xiàn)分享給大家：
um0549.rar
(5.26 MB, 下載次數(shù): 1040)
2017-8-12 18:06 上傳
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