這幾天開始做BREW開發了，剛開始挺暈的。又是C指針，又是BREW的SDK文檔，還有環境配置，一大堆東東，真是讓人手忙腳亂。好不容易配好了環境，寫出了第一個Hello world!程序。感覺還不錯，就把代碼和想法貼出來，和大家分享，希望大家指點下。

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需求：一進入應用程序，展示的頁面是灰色的背景，屏幕的正中央輸出白色的Hello world!字樣。在屏幕的下方，留有30px高的一塊空白來放置菜單欄。

需求分析及具體實現：

• ?是黑色的背景，所以先給整個背景（除了最底下）填充灰色。填充背景色所需要用到的方法：IDISPLAY接口的IDISPLAY_FillRect(IDisplay *po,AEERect * pRect, RGBVAL clrFill )方法。第一個參數是一個指向IDisplay接口的指針，第二個參數是要使用指定顏色填充的矩形的有效指針，第三個參數是用于填充矩形的顏色。第二個參數的使用：先是申明一個AEERECT類型的變量rect，然后用SETAEERECT宏來初始化rect變量（用法參見SDK）。第三個參數的用法：可以用MAKE_RGB宏來設置RGB值（用法參見SDK）。
• 輸出Hello world！字樣。先定義一個字符數組用來存儲Hello world!。然后把其輸出屏幕，這里用到了IDISPLAY接口的IDISPLAY_DrawText(IDisplay *po, AEEFont Font,

const AECHAR * pcText, int nChars, int x, int y, const AEERect * prcBackground, uint32 dwFlags )方法，這里沒有特別說明的，詳細請參見SDK。

• 最后，將屏幕更新，將輸出顯示出來。這里用到了IDISPLAY接口的IDISPLAY_Update(Idisplay *pIDisplay）方法。
• 完畢。

需要注意的事項：

• 實現中多處用到了指向IDISPLAY接口的指針。在程序自動生成的結構體定義里有AEEApplet????? a ;的定義。因為IDISPLAY、ISHELL、IModule這三個接口經常用到，所以它們已經包含在AEEApplet的結構定義中。所以，在程序中要引用指向這三個接口的指針，可以使用pMe->a.pIDisplay、pMe->a.pIShell、pMe->a.pIModule來調用（這里的pMe是指向本程序的指針）。另，如果嫌這樣麻煩或名稱沒有顧名思義性，可以在程序結構體的定義里加上自己定義的指向所需接口的指針。如：IShell* pIShell。但是注意，如果這樣定義了，在使用前一定得給它們賦于實際的值。如：pMe->pIShell=pMe->a.pIShell;。
• BREW不支持全局變量和靜態變量，用上述的第二種方法可以變通的實現全局變量。

?

程序如下（去掉了自動生成的大篇幅的注釋部分）：

?

代碼 ??1?#include?"AEEModGen.h"??????????//?Module?interface?definitions
??2?#include?"AEEAppGen.h"??????????//?Applet?interface?definitions
??3?#include?"AEEShell.h"???????????//?Shell?interface?definitions
??4?#include?"AEE.h"
??5?#include?"AEEMenu.h"
??6?
??7?#include?"studycontinue.bid"
??8?#define?TITLE_BACK_COLOR????????MAKE_RGB(28,28,28)//MAKE_RGB(222,222,222)
??9?#define?TITLE_HEIGHT????????30
?10?/*-------------------------------------------------------------------
?11?Applet?structure.?All?variables?in?here?are?reference?via?"pMe->"
?12?-------------------------------------------------------------------*/
?13?//?create?an?applet?structure?that's?passed?around.?All?variables?in
?14?//?here?will?be?able?to?be?referenced?as?static.
?15?typedef?struct?_studycontinue?{
?16?????AEEApplet??????a?;???????????//?First?element?of?this?structure?must?be?AEEApplet
?17?????AEEDeviceInfo??DeviceInfo;?//?always?have?access?to?the?hardware?device?information
?18?
?19?????//?add?your?own?variables?here...
?20?
?21?????IShell????????????*pIShell;
?22?????AEERect?????????m_rScreenRect;??//?Screen?Rect
?23?????IMenuCtl????????*pIMenuCtl;
?24?????IMenuCtl*???????????????m_pMenu;????????//?Main?Menu
?25?????IMenuCtl*????????????????pSoftCtl;
?26?
?27?????boolean????????????????????bMenuIsRoot;
?28?}?studycontinue;
?29?
?30?/*-------------------------------------------------------------------
?31?Function?Prototypes
?32?-------------------------------------------------------------------*/
?33?static??boolean?studycontinue_HandleEvent(studycontinue*?pMe,?
?34????????????????????????????????????????????????????AEEEvent?eCode,?uint16?wParam,?
?35????????????????????????????????????????????????????uint32?dwParam);
?36?boolean?studycontinue_InitAppData(studycontinue*?pMe);
?37?void????studycontinue_FreeAppData(studycontinue*?pMe);
?38?static?void?DrawEverything(studycontinue*?pMe);
?39?
?40?/*===============================================================================
?41?FUNCTION?DEFINITIONS
?42?===============================================================================?*/
?43?int?AEEClsCreateInstance(AEECLSID?ClsId,?IShell?*pIShell,?IModule?*po,?void?**ppObj)
?44?{
?45?????*ppObj?=?NULL;
?46?
?47?????if(?ClsId?==?AEECLSID_STUDYCONTINUE?)
?48?????{
?49?????????//?Create?the?applet?and?make?room?for?the?applet?structure
?50?????????if(?AEEApplet_New(sizeof(studycontinue),
?51???????????????????????????ClsId,
?52???????????????????????????pIShell,
?53???????????????????????????po,
?54???????????????????????????(IApplet**)ppObj,
?55???????????????????????????(AEEHANDLER)studycontinue_HandleEvent,
?56???????????????????????????(PFNFREEAPPDATA)studycontinue_FreeAppData)?)?//?the?FreeAppData?function?is?called?after?sending?EVT_APP_STOP?to?the?HandleEvent?function
?57???????????????????????????
?58?????????{
?59?????????????//Initialize?applet?data,?this?is?called?before?sending?EVT_APP_START
?60?????????????//?to?the?HandleEvent?function
?61?????????????if(studycontinue_InitAppData((studycontinue*)*ppObj))
?62?????????????{
?63?????????????????//Data?initialized?successfully
?64?????????????????return(AEE_SUCCESS);
?65?????????????}
?66?????????????else
?67?????????????{
?68?????????????????//Release?the?applet.?This?will?free?the?memory?allocated?for?the?applet?when
?69?????????????????//?AEEApplet_New?was?called.
?70?????????????????IAPPLET_Release((IApplet*)*ppObj);
?71?????????????????return?EFAILED;
?72?????????????}
?73?
?74?????????}?//?end?AEEApplet_New
?75?
?76?????}
?77?
?78?????return(EFAILED);
?79?}
?80?
?81?
?82?static?boolean?studycontinue_HandleEvent(studycontinue*?pMe,?AEEEvent?eCode,?uint16?wParam,?uint32?dwParam)
?83?{??
?84?????if(pMe->pIMenuCtl?&&?IMENUCTL_IsActive(pMe->pIMenuCtl)?&&?IMENUCTL_HandleEvent(pMe->pIMenuCtl,eCode,wParam,dwParam))
?85?????????return?TRUE;
?86?????if(pMe->pSoftCtl?&&?IMENUCTL_IsActive(pMe->pSoftCtl)?&&?IMENUCTL_HandleEvent(pMe->pSoftCtl,eCode,wParam,dwParam))
?87?????????return?TRUE;
?88?????switch?(eCode)?
?89?????{
?90?????????//?App?is?told?it?is?starting?up
?91?????????case?EVT_APP_START:?????????????????????
?92?????????????//?Add?your?code?here...
?93?????????????DrawEverything(pMe);
?94?????????????DrawMenu(pMe,TRUE);
?95?????????????return(TRUE);
?96?
?97?
?98?????????//?App?is?told?it?is?exiting
?99?????????case?EVT_APP_STOP:
100?????????????//?Add?your?code?here...
101?
102???????????????return(TRUE);
103?
104?
105?????????//?App?is?being?suspended?
106?????????case?EVT_APP_SUSPEND:
107?????????????//?Add?your?code?here...
108?
109???????????????return(TRUE);
110?
111?
112?????????//?App?is?being?resumed
113?????????case?EVT_APP_RESUME:
114?????????????//?Add?your?code?here...
115?
116???????????????return(TRUE);
117?
118?
119?????????//?An?SMS?message?has?arrived?for?this?app.?Message?is?in?the?dwParam?above?as?(char?*)
120?????????//?sender?simply?uses?this?format?"//BREW:ClassId:Message",?example?//BREW:0x00000001:Hello?World
121?????????case?EVT_APP_MESSAGE:
122?????????????//?Add?your?code?here...
123?
124???????????????return(TRUE);
125?
126?????????//?A?key?was?pressed.?Look?at?the?wParam?above?to?see?which?key?was?pressed.?The?key
127?????????//?codes?are?in?AEEVCodes.h.?Example?"AVK_1"?means?that?the?"1"?key?was?pressed.
128?????????case?EVT_KEY:
129?????????????//?Add?your?code?here...
130?
131???????????????return(TRUE);
132?????????case?EVT_COMMAND:
133?????????????return?TRUE;
134?
135?
136?????????//?If?nothing?fits?up?to?this?point?then?we'll?just?break?out
137?????????default:
138?????????????break;
139????}
140?
141????return?FALSE;
142?}
143?
144?
145?//?this?function?is?called?when?your?application?is?starting?up
146?boolean?studycontinue_InitAppData(studycontinue*?pMe)
147?{
148?????IShell?*?pIShell?=?pMe->a.m_pIShell;?//?Cache?Shell?Pointer
149?????//?Get?the?device?information?for?this?handset.
150?????//?Reference?all?the?data?by?looking?at?the?pMe->DeviceInfo?structure
151?????//?Check?the?API?reference?guide?for?all?the?handy?device?info?you?can?get
152?????pMe->DeviceInfo.wStructSize?=?sizeof(pMe->DeviceInfo);
153?????ISHELL_GetDeviceInfo(pMe->a.m_pIShell,&pMe->DeviceInfo);
154?
155?????//?Insert?your?code?here?for?initializing?or?allocating?resources...
156?
157?????
158?????/*if((ISHELL_CreateInstance(pIShell,?AEECLSID_MENUCTL,?(void**)(&pMe->m_pMenu))?!=?SUCCESS))?
159?????????return?FALSE;*/
160?????if((ISHELL_CreateInstance(pIShell,?AEECLSID_SOFTKEYCTL,?(void**)(&pMe->pSoftCtl))?!=?SUCCESS))?
161?????????return?FALSE;
162?
163?????//?if?there?have?been?no?failures?up?to?this?point?then?return?success
164?????return?TRUE;
165?}
166?
167?//?this?function?is?called?when?your?application?is?exiting
168?void?studycontinue_FreeAppData(studycontinue*?pMe)
169?{
170?????//?insert?your?code?here?for?freeing?any?resources?you?have?allocated...
171?
172?????//?example?to?use?for?releasing?each?interface:
173?????//?if?(?pMe->pIMenuCtl?!=?NULL?)?????????//?check?for?NULL?first
174?????//?{
175?????//????IMENUCTL_Release(pMe->pIMenuCtl)???//?release?the?interface
176?????//????pMe->pIMenuCtl?=?NULL;?????????????//?set?to?NULL?so?no?problems?trying?to?free?later
177?????//?}
178?????//
179?????/*if(pMe->m_pMenu)
180?????{
181?????????IMENUCTL_Release(pMe->m_pMenu);
182?????????pMe->m_pMenu?=?NULL;
183?????}*/
184?????if(pMe->pSoftCtl)
185?????{
186?????????IMENUCTL_Release(pMe->pSoftCtl);
187?????????pMe->pSoftCtl?=?NULL;
188?????}
189?}
190?
191?static?void?DrawEverything(studycontinue*?pMe)
192?{
193?????AECHAR?helloworld[]?=?{'H','e','l','l','o',',','W','o','r','l','d','\0'};
194?????AEERect?rect;
195?????SETAEERECT(&rect,0,0,pMe->DeviceInfo.cxScreen,pMe->DeviceInfo.cyScreen-30);????
196?????
197?????IDISPLAY_FillRect(pMe->a.m_pIDisplay,&rect,TITLE_BACK_COLOR);
200?????IDISPLAY_DrawText(pMe->a.m_pIDisplay,AEE_FONT_BOLD,helloworld,-1,0,0,NULL,IDF_ALIGN_CENTER|IDF_ALIGN_MIDDLE|IDF_TEXT_INVERTED);
201?????IDISPLAY_Update(pMe->a.m_pIDisplay);
202?}

?

?

???? 關于菜單欄的實現，我下次再發，現在還沒有想好怎么做。嘻嘻~

轉載于:https://www.cnblogs.com/wchhuangya/archive/2009/12/28/1634396.html

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