Symbian捕获全局按键的解决方案

核心提示：// why not to demonstrate this either?TBuf<256> cmdLine;RProcess().CommandLine( cmdLine );MainL( cmdLine );// Delete active schedulerCleanupStack::PopAndD

// why not to demonstrate this either?

TBuf<256> cmdLine;

RProcess().CommandLine( cmdLine );

MainL( cmdLine );

// Delete active scheduler

CleanupStack::PopAndDestroy(scheduler);

}

// Global Functions

// 本函数将初始化异常处理栈，创建console对象创建完毕后调用DoStartL，开始进入按键捕获

//捕获完毕后，销毁对象和异常处理栈

GLDEF_C TInt Start()

{

// Create cleanup stack

__UHEAP_MARK;

CTrapCleanup* cleanup = CTrapCleanup::New();

// Create output console

TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen)));

if (createError)

return createError;

// Run application code inside TRAP harness, wait keypress when terminated

TRAPD(mainError, DoStartL());

if (mainError)

console->Printf(KTextFailed, mainError);

console->Printf(KTextPressAnyKey);

console->Getch();

delete console;

delete cleanup;

__UHEAP_MARKEND;

return KErrNone;

}

////////////////////////////////////

// CGlobalCapturer

////////////////////////////////////

// Constructor

CGlobalCapturer::CGlobalCapturer() :

CActive( EPriorityNormal )

{

// nothing

}

// Destructor

CGlobalCapturer::~CGlobalCapturer()

{

delete iWindowGroupName;

delete iWindowGroup;

iWsSession.Close();

}

// Cancel listening to key presses

void CGlobalCapturer::DoCancel()

{

iWindowGroup->CancelCaptureKey( iCaptureHandle );

}

// 活动对象的初始化，连接symbian的窗口服务器，创建了一个新的窗口群，并把它的名字设为全局的