Cocos2dx 3.0 以上版本集成 MFC

最新推荐文章于 2017-05-25 17:13:54 发布

sunny_老王

最新推荐文章于 2017-05-25 17:13:54 发布

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分类专栏： cocos2dx 文章标签： cocos2dx 3.x mfc 集成 windows

本文链接：https://blog.youkuaiyun.com/sinat_29235897/article/details/46602981

本文介绍了如何在Cocos2d-x 3.x版本上集成MFC，主要涉及GLFW的修改以支持窗口句柄渲染，创建MFC工程，添加Picture控件，自定义CCocos2dxWin类，处理消息及错误解决等步骤。

之前写过一篇将cocos2dx-2.x版本集成到MFC的文章，现在到了cocos2dx-3.x版本，之前的方法已经行不通了，最近有点时间，研究了一下，算是做出来点样子，下面写一下步骤，算是做个笔记。

我采用的方案步骤很多，改动量也比较大，对于那些期望只修改几行就能达到目的的人来说，让你们失望了-_-，但本着学习的目的，改的越多不就意味着你学的越多么:)

首先要改的不是cocos2dx，而是GLFW。原因是因为cocos2dx-3.x底层渲染是基于GLFW的，但GLFW是不支持渲染到控件的，所以要改一下它。

下载GLFW源码，地址：http://www.glfw.org/download.html

解压后用CMake生成win32工程，然后用vs打开，整个工程是这样的：

我们要修改的就是glfw这个项目。

在glfw3.h中增加函数声明

GLFWAPI GLFWwindow* glfwCreateWindowEx(void* winHwnd, int width, int height, const char* title, GLFWmonitor* monitor, GLFWwindow* share);

然后在window.c中实现此函数

GLFWAPI GLFWwindow* glfwCreateWindowEx(void* winHwnd, int width, int height, const char* title, GLFWmonitor* monitor, GLFWwindow* share)
{
	_GLFWfbconfig fbconfig;
	_GLFWctxconfig ctxconfig;
	_GLFWwndconfig wndconfig;
	_GLFWwindow* window;
	_GLFWwindow* previous;

	_GLFW_REQUIRE_INIT_OR_RETURN(NULL);

	if (width <= 0 || height <= 0)
	{
		_glfwInputError(GLFW_INVALID_VALUE, "Invalid window size");
		return NULL;
	}

	fbconfig = _glfw.hints.framebuffer;
	ctxconfig = _glfw.hints.context;
	wndconfig = _glfw.hints.window;

	wndconfig.width = width;
	wndconfig.height = height;
	wndconfig.title = title;
	wndconfig.monitor = (_GLFWmonitor*)monitor;
	ctxconfig.share = (_GLFWwindow*)share;

	if (wndconfig.monitor)
	{
		wndconfig.resizable = GL_FALSE;
		wndconfig.visible = GL_TRUE;
		wndconfig.focused = GL_TRUE;
	}

	// Check the OpenGL bits of the window config
	if (!_glfwIsValidContextConfig(&ctxconfig))
		return NULL;

	window = calloc(1, sizeof(_GLFWwindow));
	window->next = _glfw.windowListHead;
	_glfw.windowListHead = window;

	window->videoMode.width = width;
	window->videoMode.height = height;
	window->videoMode.redBits = fbconfig.redBits;
	window->videoMode.greenBits = fbconfig.greenBits;
	window->videoMode.blueBits = fbconfig.blueBits;
	window->videoMode.refreshRate = _glfw.hints.refreshRate;

	window->monitor = wndconfig.monitor;
	window->resizable = wndconfig.resizable;
	window->decorated = wndconfig.decorated;
	window->autoIconify = wndconfig.autoIconify;
	window->floating = wndconfig.floating;
	window->cursorMode = GLFW_CURSOR_NORMAL;

	// Save the currently current context so it can be restored later
	previous = _glfwPlatformGetCurrentContext();

	// Open the actual window and create its context
	if (!_glfwPlatformCreateWindowEx(winHwnd, window, &wndconfig, &ctxconfig, &fbconfig))
	{
		glfwDestroyWindow((GLFWwindow*)window);
		_glfwPlatformMakeContextCurrent(previous);
		return NULL;
	}

	_glfwPlatformMakeContextCurrent(window);

	// Retrieve the actual (as opposed to requested) context attributes
	if (!_glfwRefreshContextAttribs(&ctxconfig))
	{
		glfwDestroyWindow((GLFWwindow*)window);
		_glfwPlatformMakeContextCurrent(previous);
		return NULL;
	}

	// Verify the context against the requested parameters
	if (!_glfwIsValidContext(&ctxconfig))
	{
		glfwDestroyWindow((GLFWwindow*)window);
		_glfwPlatformMakeContextCurrent(previous);
		return NULL;
	}

	// Clearing the front buffer to black to avoid garbage pixels left over
	// from previous uses of our bit of VRAM
	glClear(GL_COLOR_BUFFER_BIT);
	_glfwPlatformSwapBuffers(window);

	// Restore the previously current context (or NULL)
	_glfwPlatformMakeContextCurrent(previous);

	if (wndconfig.monitor)
	{
		int width, height;
		_glfwPlatformGetWindowSize(window, &width, &height);

		window->cursorPosX = width / 2;
		window->cursorPosY = height / 2;

		_glfwPlatformSetCursorP