cocos2d-x接受键盘事件，左右键

原文地址： http://www.vktone.com/articles/win32_key_process_in_cocos2dx.html

首先在AppDelegate.cpp加入以下代码，一定要在AppDelegate::applicationDidFinishLaunching()上，声明用的。

#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)HelloWorld *g_layer;void Win32SetKeyLayer(HelloWorld *layer){g_layer = layer;}void Win32KeyHook( UINT message,WPARAM wParam, LPARAM lParam ){CCLog("Win32KeyHook message %d wParam %d lParam %d", message, wParam, lParam);if (g_layer)g_layer->onWin32KeyEvent(message, wParam, lParam);}#endif

在AppDelegate::applicationDidFinishLaunching()中

bool AppDelegate::applicationDidFinishLaunching() {    // initialize director    CCDirector* pDirector = CCDirector::sharedDirector();    CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)// 2012.11.07 加入键盘处理代码pEGLView->setAccelerometerKeyHook(Win32KeyHook);///////////////////////////////////#endif  // CC_PLATFORM_WIN32    pDirector->setOpenGLView(pEGLView);    // turn on display FPS    pDirector->setDisplayStats(true);    // set FPS. the default value is 1.0/60 if you don't call this    pDirector->setAnimationInterval(1.0 / 60);    // create a scene. it's an autorelease object    CCScene *pScene = HelloWorld::scene();    // run    pDirector->runWithScene(pScene);    return true;}

在HelloWorldScene.cpp中

CCScene* HelloWorld::scene(){    // 'scene' is an autorelease object    CCScene *scene = CCScene::create();        // 'layer' is an autorelease object    HelloWorld *layer = HelloWorld::create();    // add layer as a child to scene    scene->addChild(layer);extern void Win32SetKeyLayer(HelloWorld *layer);Win32SetKeyLayer(layer);    // return the scene    return scene;}

#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)void HelloWorld::onWin32KeyEvent( UINT message,WPARAM wParam, LPARAM lParam ){ CCLog("onWin32KeyEvent message %d wParam %d lParam %d", message, wParam, lParam);    /*    // Up    Win32KeyHook message 256 wParam 38 lParam 21495809    onWin32KeyEvent message 256 wParam 38 lParam 21495809    Win32KeyHook message 257 wParam 38 lParam -1052246015    onWin32KeyEvent message 257 wParam 38 lParam -1052246015    // Down    Win32KeyHook message 256 wParam 40 lParam 22020097    onWin32KeyEvent message 256 wParam 40 lParam 22020097    Win32KeyHook message 257 wParam 40 lParam -1051721727    onWin32KeyEvent message 257 wParam 40 lParam -1051721727    // Left    Win32KeyHook message 256 wParam 37 lParam 21692417    onWin32KeyEvent message 256 wParam 37 lParam 21692417    Win32KeyHook message 257 wParam 37 lParam -1052049407    onWin32KeyEvent message 257 wParam 37 lParam -1052049407    // Right    Win32KeyHook message 256 wParam 39 lParam 21823489    onWin32KeyEvent message 256 wParam 39 lParam 21823489    Win32KeyHook message 257 wParam 39 lParam -1051918335    onWin32KeyEvent message 257 wParam 39 lParam -1051918335    */    if (message == 256)    {        switch (wParam)        {        case 38:            moveHero(1);            break;        case 40:            moveHero(2);            break;        case 37:            moveHero(3);            break;        case 39:            moveHero(4);            break;        }    }    else if (message == 257)    {    }}#endif

void HelloWorld::moveHero( int diraction ){CCLog("moveHero: %d",diraction);}

//现在你就可以上下左右键，看输出的值。