這一周可真背，先是硬盤壞了，接著主板都壞了！害得我花了一周的時間才把機器搞好，BREW的環境安裝好，這才做了第二個BREW程序。
設置並輸出菜單
需求：開發的BREW程序有自己的圖標，不使用系統的圖標。一進入系統，先是顯示一個圖標及程序名稱。這個畫面停留兩秒鐘後，進入主頁面。主頁面的結構為：最上面30像素高的地方是顯示標題用的；最下面也有三十像素高的地方來顯示操作菜單，有確定和退出；然後中間是三個菜單顯示的地方。
需求分析及具體實現：
需要定義的變量：在程序中都有詳細注釋，這裡就不多講了。
需要初始化的東東：因為有兩處菜單顯示（中間的和底部的），並且這兩處菜單的樣式等都不一樣，所以，在初始化函數裡得創建兩個IMenuCtl的對象，並且初始化顯示這兩塊菜單的矩形樣式。在後面的顯示過程中，因為有顯示位置的計算，所以再初始化一個整形的變量來存儲粗體字的高度。設置一個獲取全屏的矩形變量，這在後面多處會用到。
需要釋放的東東：因為在SDK裡的IMenuCtl接口說明裡有提到：不再需要菜單控件，要用IMenuCtl_Release()函數將其釋放。所以，在初始化時創建的兩個IMenuCtl對象，在最後要釋放掉。
一進入程序顯示二秒鐘的畫面，用ISHELL_SetTimer()函數實現。先是將整個屏幕填充背景顏色，然後將圖片從數據庫裡讀出，再顯示到屏幕的正中。在圖片的下邊，顯示程序的名稱（文字和圖片之間相隔6像素）。
因為程序中都有詳細的注釋說明，在這裡就不多說了。
需要注意的事項：
標題因為只是文字，所以使用了IDISPLAY_DrawText()方法來繪制。而中間和底部的菜單除了文字，還有系統默認的事件（比如點擊手機鍵盤上的上、下鍵或使用滾輪，不同的菜單會在選取和不取消選取狀態之間切換，等等），所以，得用指向IMenuCtl的指針，並且調用IMenuCtl接口的相關方法來繪制（繪制的相關過程在SDK上都有詳細的說明，詳情請參見SDK）。
如果是菜單項響應系統事件，那麼，就交於系統去處理。處理完成後，仍交於系統即可。每個事件的處理，如果要是處理完畢，還想交給系統處理，就返回FALSE，如果不想系統處理，就返回TRUE，這個時候就代表用戶處理完畢，系統將不會處理。對於掛起和恢復的事件，要特別注意的是屏幕需要重新繪制，某些資源需要釋放或者是重新載入。
我將繪制標題的動作封裝了一個方法，是因為標題在每一頁顯示基本上都會有。而且，它們都有很多的共性。這樣方便我們修改代碼，也使流程清晰化。
程序代碼如下（省略了大段系統自動生成的注釋後）：
代碼
1 #include "AEEModGen.h" // Module interface definitions
2 #include "AEEAppGen.h" // Applet interface definitions
3 #include "AEEShell.h" // Shell interface definitions
4
5 #include "AEEMenu.h"
6 #include "menuctltest.brh"
7
8 #include "menuctltest.bid"
9
10 #define MAIN_TITLE_HEIGHT 30//最上面標題的高度
11 #define SOFT_KEY_HEIGHT 30//最下面菜單的高度
12
13 #define RES_STR_MAX_LEN 16//資源文件字符串的最大長度
14
15 #define TITLE_BACK_COLOR MAKE_RGB(28,28,28)//最上面標題欄的背景顏色
16 #define ITEM_BACK_COLOR MAKE_RGB(44,44,44)//中間菜單區域的
17 #define ITEM_TEXT_COLOR MAKE_RGB(255,255,255)//中間菜單文本的顏色
18 #define ITEM_SEL_BACK_COLOR MAKE_RGB(46,90,185)//已經選擇文本的背景顏色
19 #define ITEM_SEL_TEXT_COLOR MAKE_RGB(255,255,255)//已經選擇文本的字體顏色
20 #define ITEM_FRAME_COLOR MAKE_RGB(83,162,241)//邊框顏色
21
22 /*-------------------------------------------------------------------
23 Applet structure. All variables in here are reference via "pMe->"
24 -------------------------------------------------------------------*/
25 // create an applet structure that's passed around. All variables in
26 // here will be able to be referenced as static.
27 typedef struct _menuctltest {
28 AEEApplet a ; // First element of this structure must be AEEApplet
29 AEEDeviceInfo DeviceInfo; // always have Access to the hardware device information
30
31 // add your own variables here...
32 IMenuCtl* p_MainMenuCtl;//指向IMenuCtl的指針，用來顯示和控制中間主要的菜單項
33 IMenuCtl* p_SoftKeyCtl;//指向IMenuCtl的指針，用來顯示和控制底部的菜單項
34 AEERect p_WholeScreen;//定義一個全屏的矩形變量
35 AECHAR p_MainTitle[RES_STR_MAX_LEN];//定義獲取標題資源字符串的數組
36 int r_BlodFontHeight;//定義獲取粗體字字符高度的變量
37 } menuctltest;
38
39 /*-------------------------------------------------------------------
40 Function PRototypes
41 -------------------------------------------------------------------*/
42 static boolean menuctltest_HandleEvent(menuctltest* pMe,
43 AEEEvent eCode, uint16 wParam,
44 uint32 dwParam);
45 boolean menuctltest_InitAppData(menuctltest* pMe);
46 void menuctltest_FreeAppData(menuctltest* pMe);
47 static void InitMainMenu(menuctltest* pMe);//初始化放置中間主菜單和底部菜單的矩形樣式的方法
48 static void ShowAnimation(menuctltest* pMe);//一開始顯示程序圖標及文字的方法
49 static void ShowMain(menuctltest* pMe);//顯示主要界面的方法
50 static void DrawTitle(menuctltest* pMe);//繪制最上面標題文字的方法
51 /*===============================================================================
52 FUNCTION DEFINITIONS
53 =============================================================================== */
54 int AEEClsCreateInstance(AEECLSID ClsId, IShell *pIShell, IModule *po, void **ppObj)
55 {
56 *ppObj = NULL;
57
58 if( ClsId == AEECLSID_MENUCTLTEST )
59 {
60 // Create the applet and make room for the applet structure
61 if( AEEApplet_New(sizeof(menuctltest),
62 ClsId,
63 pIShell,
64 po,
65 (IApplet**)ppObj,
66 (AEEHANDLER)menuctltest_HandleEvent,
67 (PFNFREEAPPDATA)menuctltest_FreeAppData) ) // the FreeAppData function is called after sending EVT_APP_STOP to the HandleEvent function
68
69 {
70 //Initialize applet data, this is called before sending EVT_APP_START
71 // to the HandleEvent function
72 if(menuctltest_InitAppData((menuctltest*)*ppObj))
73 {
74 //Data initialized successfully
75 return(AEE_SUCCESS);
76 }
77 else
78 {
79 //Release the applet. This will free the memory allocated for the applet when
80 // AEEApplet_New was called.
81 IAPPLET_Release((IApplet*)*ppObj);
82 return EFAILED;
83 }
84
85 } // end AEEApplet_New
86
87 }
88
89 return(EFAILED);
90 }
91
92 static boolean menuctltest_HandleEvent(menuctltest* pMe, AEEEvent eCode, uint16 wParam, uint32 dwParam)
93 {
94 //菜單控件對象處理接收事件的系統方法。如果是典型按鍵按下事件，則將由系統處理；如果不是，後面自己寫的代碼處理。
95 if( pMe->p_MainMenuCtl && IMENUCTL_HandleEvent( pMe->p_MainMenuCtl, eCode, wParam, dwParam) )
96 return TRUE;
97
98 switch (eCode)
99 {
100 // App is told it is starting up
101 case EVT_APP_START:
102 // Add your code here...
103 ShowAnimation(pMe);
104 return(TRUE);
105
106
107 // App is told it is exiting
108 case EVT_APP_STOP:
109 // Add your code here...
110
111 return(TRUE);
112
113
114 // App is being suspended
115 case EVT_APP_SUSPEND:
116 // Add your code here...
117
118 return(TRUE);
119
120
121 // App is being resumed
122 case EVT_APP_RESUME:
123 // Add your code here...
124
125 return(TRUE);
126
127
128 // An SMS message has arrived for this app. Message is in the dwParam above as (char *)
129 // sender simply uses this format "//BREW:ClassId:Message", example //BREW:0x00000001:Hello World
130 case EVT_APP_MESSAGE:
131 // Add your code here...
132
133 return(TRUE);
134
135 // A key was pressed. Look at the wParam above to see which key was pressed. The key
136 // codes are in AEEVCodes.h. Example "AVK_1" means that the "1" key was pressed.
137 case EVT_KEY:
138 // Add your code here...
139
140 return(TRUE);
141
142
143 // If nothing fits up to this point then we'll just break out
144 default:
145 break;
146 }
147
148 return FALSE;
149 }
150
151
152 // this function is called when your application is starting up
153 boolean menuctltest_InitAppData(menuctltest* pMe)
154 {
155 // Get the device information for this handset.
156 // Reference all the data by looking at the pMe->DeviceInfo structure
157 // Check the API reference guide for all the handy device info you can get
158 pMe->DeviceInfo.wStructSize = sizeof(pMe->DeviceInfo);
159 ISHELL_GetDeviceInfo(pMe->a.m_pIShell,&pMe->DeviceInfo);
160
161 // Insert your code here for initializing or allocating resources...
162 // 創建了兩個IMenuCtl對象
163 if( ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_MENUCTL, (void**)(&pMe->p_MainMenuCtl)) != SUCCESS)
164 return FALSE;
165 if( ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_SOFTKEYCTL, (void**)(&pMe->p_SoftKeyCtl)) != SUCCESS)
166 return FALSE;
167
168 //獲取粗體字字符的高度
169 pMe->r_BlodFontHeight = IDISPLAY_GetFontMetrics( pMe->a.m_pIDisplay, AEE_FONT_BOLD, NULL, NULL) + 1;
170 //初始化獲取全屏的矩形變量
171 SETAEERECT( &pMe->p_WholeScreen, 0, 0, pMe->DeviceInfo.cxScreen, pMe->DeviceInfo.cyScreen);
172 InitMainMenu(pMe);
173 // if there have been no failures up to this point then return success
174 return TRUE;
175 }
176
177 // this function is called when your application is exiting
178 void menuctltest_FreeAppData(menuctltest* pMe)
179 {
180 // insert your code here for freeing any resources you have allocated...
181
182 // example to use for releasing each interface:
183 // if ( pMe->pIMenuCtl != NULL ) // check for NULL first
184 // {
185 // IMENUCTL_Release(pMe->pIMenuCtl) // release the interface
186 // pMe->pIMenuCtl = NULL; // set to NULL so no problems trying to free later
187 // }
188 //
189 //釋放IMenuCtl指針資源
190 if ( pMe->p_MainMenuCtl != NULL)
191 {
192 IMENUCTL_Release(pMe->p_MainMenuCtl);
193 pMe->p_MainMenuCtl = NULL;
194 }
195 if( pMe->p_SoftKeyCtl != NULL)
196 {
197 IMENUCTL_Release(pMe->p_SoftKeyCtl);
198 pMe->p_SoftKeyCtl = NULL;
199 }
200 }
201
202 static void InitMainMenu(menuctltest* pMe)
203 {
204 AEEMenuColors colors;
205 AEEItemStyle style1,style2;
206 AEERect rect;
207
208 SETAEERECT( &rect, 0, MAIN_TITLE_HEIGHT, pMe->DeviceInfo.cxScreen, pMe->DeviceInfo.cyScreen - MAIN_TITLE_HEIGHT - SOFT_KEY_HEIGHT);
209 IMENUCTL_SetRect( pMe->p_MainMenuCtl, &rect );
210 SETAEERECT( &rect, 0, pMe->DeviceInfo.cyScreen - SOFT_KEY_HEIGHT, pMe->DeviceInfo.cxScreen, SOFT_KEY_HEIGHT );
211 IMENUCTL_SetRect( pMe->p_SoftKeyCtl, &rect);
212
213 //設置顯示文字的樣式
214 colors.cBack = ITEM_BACK_COLOR;
215 colors.cText = ITEM_TEXT_COLOR;
216 colors.cSelBack = ITEM_SEL_BACK_COLOR;
217 colors.cSelText = ITEM_SEL_TEXT_COLOR;
218 colors.cFrame = ITEM_FRAME_COLOR;
219 colors.wMask = MC_BACK|MC_TEXT|MC_SEL_BACK|MC_SEL_TEXT|MC_FRAME;
220 IMENUCTL_SetColors( pMe->p_MainMenuCtl, &colors);
221 colors.cBack = TITLE_BACK_COLOR;
222 colors.cText = ITEM_TEXT_COLOR;
223 colors.cSelBack = ITEM_SEL_BACK_COLOR;
224 colors.cSelText = ITEM_SEL_TEXT_COLOR;
225 colors.cFrame = ITEM_FRAME_COLOR;
226 colors.wMask = MC_BACK|MC_TEXT|MC_SEL_BACK|MC_SEL_TEXT|MC_FRAME;
227 IMENUCTL_SetColors( pMe->p_SoftKeyCtl, &colors);
228
229 //設置主菜單和底部菜單已選擇的菜單樣式和一般菜單樣式
230 style1.ft = AEE_FT_NONE;
231 style1.roImage = AEE_RO_NOT;
232 style1.xOffset = 4;
233 style1.yOffset = 4;
234 style2.ft = AEE_FT_BOX;
235 style2.roImage = AEE_RO_NOT;
236 style2.xOffset = 4;
237 style2.yOffset = 4;
238 IMENUCTL_SetStyle(pMe->p_MainMenuCtl, &style1, &style2);
239 IMENUCTL_SetStyle(pMe->p_SoftKeyCtl, &style1, &style2);
240 }
241
242 static void ShowAnimation(menuctltest* pMe)
243 {
244 IImage* p_Image = NULL;
245 AEEImageInfo rImageInfo;
246
247 //讀取資源文件裡的圖片資源
248 p_Image = ISHELL_LoadResImage( pMe->a.m_pIShell, MENUCTLTEST_RES_FILE, IDI_START_IMG);
249
250 if( p_Image)
251 {
252 int x,y;
253 AECHAR tempArr[RES_STR_MAX_LEN];
254
255 //先將要顯示開始動畫的區域填充顏色
256 IDisplay_FillRect( pMe->a.m_pIDisplay, &pMe->p_WholeScreen, ITEM_BACK_COLOR );
257 //得到圖片的相關信息
258 IIMAGE_GetInfo( p_Image, &rImageInfo);
259 //設置圖片出現在屏幕上的左上角位置（在屏幕中水平、豎直都居中）
260 x = (pMe->p_WholeScreen.x + pMe->p_WholeScreen.dx - rImageInfo.cx) / 2;
261 y = (pMe->p_WholeScreen.y + pMe->p_WholeScreen.dy - rImageInfo.cy) / 2 - pMe->r_BlodFontHeight;
262 //將圖片顯示出來
263 IIMAGE_Draw( p_Image, x, y );
264 //讀取資源中的文本
265 ISHELL_LoadResString( pMe->a.m_pIShell, MENUCTLTEST_RES_FILE, IDS_START_TITLE, tempArr, RES_STR_MAX_LEN * sizeof(AECHAR));
266 //確定圖片下文本的位置
267 x = (pMe->DeviceInfo.cxScreen - IDisplay_MeasureText( pMe->a.m_pIDisplay, AEE_FONT_NORMAL, tempArr)) / 2;
268 y += rImageInfo.cy + 6;
269 //將文本顯示出來
270 IDisplay_DrawText( pMe->a.m_pIDisplay, AEE_FONT_NORMAL, tempArr, -1, x, y, NULL, IDF_TEXT_INVERTED | IDF_TEXT_TRANSPARENT);
271 //更新屏幕用於顯示
272 IDisplay_Update(pMe->a.m_pIDisplay);
273 //釋放IImage對象
274 IImage_Release(p_Image);
275 //設置圖片顯示時間及顯示完成後調用的函數
276 ISHELL_SetTimer( pMe->a.m_pIShell, 2000, (PFNNOTIFY) ShowMain, (void *)pMe);
277 }
278 else
279 {
280 ShowMain(pMe);
281 }
282 }
283
284 static void ShowMain(menuctltest* pMe)
285 {
286 AEERect rect;
287
288 //設置標題的背景矩形並填充顏色
289 SETAEERECT( &rect, 0, 0, pMe->DeviceInfo.cxScreen, MAIN_TITLE_HEIGHT);
290 IDisplay_FillRect( pMe->a.m_pIDisplay, &rect, TITLE_BACK_COLOR);
291 //讀取資源文件中的標題文字
292 ISHELL_LoadResString( pMe->a.m_pIShell, MENUCTLTEST_RES_FILE, IDS_MAIN_TITLE, pMe->p_MainTitle, RES_STR_MAX_LEN * sizeof( AECHAR));
293 //將標題文字輸出
294 DrawTitle(pMe);
295
296 //從數據庫讀取中間菜單項並添加
297 IMENUCTL_AddItem( pMe->p_MainMenuCtl, MENUCTLTEST_RES_FILE, IDS_MAIN_MENU_ONE, IDS_MAIN_MENU_ONE, NULL, 0);
298 IMENUCTL_AddItem( pMe->p_MainMenuCtl, MENUCTLTEST_RES_FILE, IDS_MAIN_MENU_TWO, IDS_MAIN_MENU_TWO, NULL, 0);
299 IMENUCTL_AddItem( pMe->p_MainMenuCtl, MENUCTLTEST_RES_FILE, IDS_MAIN_MENU_THREE, IDS_MAIN_MENU_THREE, NULL, 0);
300 //將中間菜單項在頁面中間顯示出來
301 IMENUCTL_SetActive(pMe->p_MainMenuCtl, TRUE);
302 IMENUCTL_Redraw(pMe->p_MainMenuCtl);
303 //從數據庫讀取底部菜單項並添加
304 IMENUCTL_AddItem(pMe->p_SoftKeyCtl,MENUCTLTEST_RES_FILE, IDS_SOFT_OK, IDS_SOFT_OK, NULL, 0);
305 IMENUCTL_AddItem(pMe->p_SoftKeyCtl,MENUCTLTEST_RES_FILE, IDS_SOFT_EXIT, IDS_SOFT_EXIT, NULL, 0);
306 //將底部菜單項在頁面底部顯示出來
307 IMENUCTL_Redraw(pMe->p_SoftKeyCtl);
308 IDISPLAY_Update(pMe->a.m_pIDisplay);
309 }
310
311 static void DrawTitle(menuctltest* pMe)
312 {
313 AEERect rect;
314 int x,y;
315 //設置顯示標題文字的矩形
316 SETAEERECT( &rect, 0, 0, pMe->DeviceInfo.cxScreen, MAIN_TITLE_HEIGHT);
317 IDISPLAY_FillRect(pMe->a.m_pIDisplay, &rect, TITLE_BACK_COLOR);
318 //設置文字顯示的左上角坐標
319 x = (pMe->DeviceInfo.cxScreen - IDISPLAY_MeasureText( pMe->a.m_pIDisplay, AEE_FONT_BOLD, pMe->p_MainTitle)) / 2;
320 y = (MAIN_TITLE_HEIGHT - pMe->r_BlodFontHeight) / 2;
321 //將頭部標題文字顯示出來
322 IDISPLAY_DrawText( pMe->a.m_pIDisplay, AEE_FONT_BOLD, pMe->p_MainTitle, -1, x, y, NULL, IDF_TEXT_INVERTED | IDF_TEXT_TRANSPARENT);
323 }
本程序主要是菜單的顯示，對於菜單的操作，下次再發吧！
