在MFC 窗口中运行 cocos2d-x 3.2 （二）让其在MFC picture控件中运行_app

概述上一篇我们配置了运行环境，但是并不完美，MFC窗口和 cosos2d 窗口是分开运行的。如果用来做工具看起来不太好看，这一篇我们将修改cocos2d 代码，让其运行在MFC控件上参考：http://blog.csdn.net/akof1314/article/details/8133800 要把cocos2d 窗口运行在 MFC 控件上，我们就要找到这个窗口的句柄，下面我们来一步步找，看

上一篇我们配置了运行环境，但是并不完美，MFC窗口和 cosos2d 窗口是分开运行的。如果用来做工具看起来不太好看，这一篇我们将修改cocos2d 代码，让其运行在MFC控件上

参考：http://blog.csdn.net/akof1314/article/details/8133800

要把cocos2d 窗口运行在 MFC 控件上，我们就要找到这个窗口的句柄，下面我们来一步步找，看看怎样得到这个窗口句柄

1.首先我们来分析cocos2d的运行机制

打开cocos2d::Application::getInstance()->run(); run()函数的源码：

[cpp] view plain copy intApplication::run() { PVRFrameEnableControlWindow(false); //Mainmessageloop: LARGE_INTEGERnFreq; LARGE_INTEGERnLast; LARGE_INTEGERnNow; queryPerformanceFrequency(&nFreq); queryPerformanceCounter(&nLast); //这里调用了AppDelegate中的applicationDIDFinishLaunching() //Initializeinstanceandcocos2d. if(!applicationDIDFinishLaunching()) return0; } //那么游戏窗口一定是在这之前创建的 autodirector=Director::getInstance(); autoglvIEw=director->getopenGLVIEw(); //RetainglvIEwtoavoIDglvIEwbeingreleasedinthewhileloop glvIEw->retain(); //下面是游戏主循环 while(!glvIEw->windowshouldClose()) { queryPerformanceCounter(&nNow); if(nNow.QuadPart-nLast.QuadPart>_animationInterval.QuadPart) nLast.QuadPart=nNow.QuadPart; director->mainLoop(); glvIEw->pollEvents(); } else Sleep(0); //Directorshouldstilldoacleanupifthewindowwasclosedmanually. if(glvIEw->isOpenglready()) director->end(); director->mainLoop(); director=nullptr; glvIEw->release(); returntrue; } 2. 于是我们查看AppDelegate::applicationDIDFinishLaunching() 代码：

boolAppDelegate::applicationDIDFinishLaunching(){ //initializedirector autodirector=Director::getInstance(); autoglvIEw=director->getopenGLVIEw(); if(!glvIEw){ //第一次运行肯定会进入这里，这个create函数创建了GLVIEw对象 glvIEw=GLVIEw::create("MyGame"); director->setopenGLVIEw(glvIEw); //turnondisplayFPS director->setdisplayStats(true); //setFPS.thedefaultvalueis1.0/60ifyoudon'tcallthis director->setAnimationInterval(1.0/60); //createascene.it'sanautoreleaSEObject autoscene=HelloWorld::createScene(); //run director->runWithScene(scene); true; 3. 我们看看GLVIEw::create函数代码

GLVIEw*GLVIEw::create(conststd::string&vIEwname) autoret=newGLVIEw; //调用了initWithRect() if(ret&&ret->initWithRect(vIEwname,Rect(0,960,640),1)){ ret->autorelease(); returnret; returnnullptr; }

4.initWithRect 代码

[HTML] boolGLVIEw::initWithRect(conststd::string&vIEwname,Rectrect,floatframeZoomFactor) setVIEwname(vIEwname); _frameZoomFactor=frameZoomFactor; glfwWindowHint(GLFW_RESIZABLE,GL_FALSE); //找到了，glfwCreateWindow这个函数就是创建窗口的（我只知道glfw是个opengl的库，想了解的可以去搜一下），下面我们来取窗口句柄 _mainWindow=glfwCreateWindow(rect.size.wIDth*_frameZoomFactor, rect.size.height*_frameZoomFactor, _vIEwname.c_str(), _monitor,108); List-style:decimal-leading-zero outsIDe; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> nullptr); glfwMakeContextCurrent(_mainWindow); glfwSetMousebuttonCallback(_mainWindow,GLFWEventHandler::onGLFWMouseCallBack); glfwSetCursorPosCallback(_mainWindow,GLFWEventHandler::onGLFWMouseMoveCallBack); glfwSetScrollCallback(_mainWindow,GLFWEventHandler::onGLFWMouseScrollCallback); glfwSetCharCallback(_mainWindow,GLFWEventHandler::onGLFWCharCallback); glfwSetKeyCallback(_mainWindow,GLFWEventHandler::onGLFWKeyCallback); glfwSetwindowPosCallback(_mainWindow,GLFWEventHandler::onGLFWWindowPosCallback); glfwSetFramebufferSizeCallback(_mainWindow,GLFWEventHandler::onGLFWframebuffersize); glfwSetwindowsizeCallback(_mainWindow,GLFWEventHandler::onGLFWwindowsizefunCallback); setFrameSize(rect.size.wIDth,rect.size.height); //checkOpenGLversionatfirst constglubyte*glVersion=glGetString(GL_VERSION); if(utils::atof((constchar*)glVersion)<1.5) charstrComplain[256]={0}; sprintf(strComplain,248)"> "OpenGL1.5orhigherisrequired(yourversionis%s).PleaseupgradethedriverofyourvIDeocard.",108); List-style:decimal-leading-zero outsIDe; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> glVersion); MessageBox(strComplain,"OpenGLversiontooold"); returnfalse; initGlew(); //Enablepointsizebydefault. glEnable(GL_VERTEX_PROGRAM_POINT_SIZE); returntrue; } 5. 有个API 函数glfwGetWin32Window（）可以取得窗口句柄。（由于不了解glfw 网上搜了半天才找到这个。。。）

参考: http://www.glfw.org/docs/3.0/group__native.HTML

6.下面开始修改代码

在CCGLVIEw.cpp 前面添加（头文件一定要在宏定义后面）

#defineGLFW_EXPOSE_NATIVE_WIN32 #defineGLFW_EXPOSE_NATIVE_WGL #include"glfw3native.h"
给GLVIEw类添加成员：

HWNDgetHwnd(); voIDcloseWindow(); HWNDm_hwnd;
HWNDGLVIEw::getHwnd() returnm_hwnd; voIDGLVIEw::closeWindow() glfwSetwindowshouldClose(_mainWindow,1); }

修改函数bool GLVIEw::initWithRect(const std::string& vIEwname,Rect rect,float frameZoomFactor)

在函数最后添加

m_hwnd=glfwGetWin32Window(_mainWindow);

7. 打开Application 类添加一个 int cocosrun() public成员函数

intApplication::cocosrun() //Initializeinstanceandcocos2d. if(!applicationDIDFinishLaunching()) return0; //RetainglvIEwtoavoIDglvIEwbeingreleasedinthewhileloop glvIEw->retain(); ShowWindow(glvIEw->getHwnd(),SW_SHOW); while(!glvIEw->windowshouldClose()) queryPerformanceCounter(&nNow); if(nNow.QuadPart-nLast.QuadPart>_animationInterval.QuadPart) nLast.QuadPart=nNow.QuadPart; glvIEw->pollEvents(); else Sleep(0); //Directorshouldstilldoacleanupifthewindowwasclosedmanually. if(glvIEw->isOpenglready()) director->end(); director=nullptr; glvIEw->release(); true; }
8. 打开Application 类添加一个 voID closeWindow()public成员函数

voIDApplication::closeWindow() autodirector=cocos2d::Director::getInstance(); glvIEw->closeWindow(); 9. 给类AppDelegate添加成员

HWNDm_hwnd; RECTm_parentRect; voIDAppDelegate::setParent(HWNDhwnd,RECTrect) m_hwnd=hwnd; m_parentRect.left=rect.left; m_parentRect.top=rect.top; m_parentRect.right=rect.right; m_parentRect.bottom=rect.bottom; 10 修改AppDelegate::applicationDIDFinishLaunching() 函数

if(!glvIEw){ ::SetParent(glvIEw->getHwnd(),m_hwnd); SetwindowLong(glvIEw->getHwnd(),GWL_STYLE,getwindowlong(glvIEw->getHwnd(),GWL_STYLE)&~WS_CAPTION); ::SetwindowPos(glvIEw->getHwnd(),HWND_top,m_parentRect.left,m_parentRect.top,m_parentRect.right-m_parentRect.left,m_parentRect.bottom-m_parentRect.top,SWP_NOcopYBITS|SWP_HIDEWINDOW); 11. 给对话框添加一个 Picture 控件(注意更改默认 ID)，并为其添加Control 类型成员变量 m_cocosWin ，修改上篇中button的消息响应函数

voIDCCocosEditorDlg::OnBnClickedbutton1() AppDelegateapp; RECTrc; m_cocos2DWin.GetClIEntRect(&rc); app.setParent(m_cocos2DWin.m_hWnd,rc); cocos2d::Application::getInstance()->cocosrun(); 12. 关闭cocos2d窗口，在类向导中给MFC对话框窗口添加 WM_CLOSE消息响应函数：

voIDCCocosEditorDlg::OnClose() cocos2d::Application::getInstance()->closeWindow(); CDialogEx::OnClose(); }
13.编译运行程序：

14 .运行时会发现 cocos2d窗口闪了下，这个原因是cocos2d先创建，然后移到了Picture控件上，那我们让Cocos2d的窗口创建时先不可见：

boolGLVIEw::initWithRect(conststd::string&vIEwname,floatframeZoomFactor) _frameZoomFactor=frameZoomFactor; glfwWindowHint(GLFW_VISIBLE,GL_FALSE); _mainWindow=glfwCreateWindow(rect.size.wIDth*_frameZoomFactor,0); background-color:inherit">//checkOpenGLversionatfirst constglubyte*glVersion=glGetString(GL_VERSION); if(utils::atof((constchar*)glVersion)<1.5) charstrComplain[256]={0}; "OpenGL1.5orhigherisrequired(yourversionis%s).PleaseupgradethedriverofyourvIDeocard.", "OpenGLversiontooold"); false; //Enablepointsizebydefault. m_hwnd=glfwGetWin32Window(_mainWindow); 这样就解决闪一下的问题