如何解决我的 OpenGL 程序的“您的计算机中缺少glew32.dll”问题？

当我尝试构建并运行我的 OpenGL+GLEW+GLFW 程序时，它构建得很好，但无法运行，给我这个错误："The program can't start because glew32.dll is missing from your computer. Try reinstalling the program to fix this problem."

我正在链接glew32.lib作为静态库。我也在使用#define GLEW_STATIC.

那么，为什么程序会提示需要DLL文件呢？

#include <iostream>

//#define GLEW_STATIC

// GLEW
#include <include/GL/glew.h>

// GLFW
#include <include/GLFW/glfw3.h>

//we define GLEW_STATIC, since we’re using the static version of the GLEW library.
#define GLEW_STATIC


// Is called whenever a key is pressed/released via GLFW
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)
{
    std::cout << key << std::endl;

    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
    {
        //we close GLFW by setting its WindowShouldClose 
        //property to true.
        glfwSetWindowShouldClose(window, GL_TRUE);
    }
}

// Window dimensions
const GLuint WIDTH = 800, HEIGHT = 600;

// The MAIN function, from here we start the application and run the game loop
int main()
{
    std::cout << "Starting GLFW context, OpenGL 3.3" << std::endl;
    // Initializes GLFW
    glfwInit();
    // Set all the required options for GLFW
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

    // Create a GLFWwindow object that we can use for GLFW's functions
    GLFWwindow * window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", nullptr, nullptr);
    glfwMakeContextCurrent(window);
    if (window == NULL)
    {
        std::cout << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }

    // Set the required callback functions
    glfwSetKeyCallback(window, key_callback);

    // Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
    glewExperimental = GL_TRUE;
    // Initialize GLEW to setup the OpenGL Function pointers
    if (glewInit() != GLEW_OK)
    {
        std::cout << "Failed to initialize GLEW" << std::endl;
        return -1;
    }    

    // Define the viewport dimensions
    glViewport(0, 0, WIDTH, HEIGHT);

    // Game loop
    while (!glfwWindowShouldClose(window))
    {
        // Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
        glfwPollEvents();

        // Render
        // Clear the colorbuffer
        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);

        // Swap the screen buffers
        glfwSwapBuffers(window);
    }

    // Terminate GLFW, clearing any resources allocated by GLFW.
    glfwTerminate();
    return 0;
}

我正在链接glew32.lib

这就是你出错的地方，glew32.lib是DLL版本的导入库。如果您不想依赖glew32.dll，那么您需要链接静态链接库。它的名字是glew32s.lib。否则定义 GLEW_STATIC 对此没有影响。

猜测这可能是如何出错的，请注意 SourceForge 上提供的预构建二进制文件仅包含 glew32.lib。您必须自己构建glew32s.lib。这通常是一个相当严格的要求，使用与构建其余代码完全相同的编译器版本和编译器选项非常重要。阅读项目的 readme.txt 文件以获取构建说明，我在使用 MSVC 从提供的项目文件进行构建时没有遇到任何问题。

库名称的完整列表：

• glew32.lib：发布版本，需要 glew32.dll
• glew32d.lib：调试版本，需要 glew32d.dll
• glew32s.lib：发布版本，静态链接库
• glew32sd.lib：调试构建，静态链接库

您还可以选择构建这些库的 MX（多渲染上下文）版本，“mx”附加到它们的名称中。