Opengl超级实例compliation errors源代码：绘制一个三角形

Question

我是OpenGL的新手，我现在正在尝试书中的例子，我已经正确地包含了所有的库和标题，但似乎仍然有些事情不对。

这些是我包含的标题：

这是代码：

// Triangle.cpp
// Our first OpenGL program that will just draw a triangle on the screen.
#include <GLTools.h> // OpenGL toolkit
#include <GLShaderManager.h> // Shader Manager Class
#ifdef __APPLE__
#include <glut/glut.h> // OS X version of GLUT
#else
#define FREEGLUT_STATIC
#include <GL/glut.h> // Windows FreeGlut equivalent
#endif
GLBatch triangleBatch;
GLShaderManager shaderManager;
///////////////////////////////////////////////////////////////////////////////
// Window has changed size, or has just been created. In either case, we need
// to use the window dimensions to set the viewport and the projection matrix.
void ChangeSize(int w, int h)
{
    glViewport(0, 0, w, h);
}
///////////////////////////////////////////////////////////////////////////////
// This function does any needed initialization on the rendering context.
// This is the first opportunity to do any OpenGL related tasks.
void SetupRC()
{
    // Blue background
    glClearColor(0.0f, 0.0f, 1.0f, 1.0f );
    shaderManager.InitializeStockShaders();
    // Load up a triangle
    GLfloat vVerts[] = { -0.5f, 0.0f, 0.0f,
        0.5f, 0.0f, 0.0f,
        0.0f, 0.5f, 0.0f };
    triangleBatch.Begin(GL_TRIANGLES, 3);
    triangleBatch.CopyVertexData3f(vVerts);
    triangleBatch.End();
}
///////////////////////////////////////////////////////////////////////////////
// Called to draw scene
void RenderScene(void)
{
    // Clear the window with current clearing color
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
    GLfloat vRed[] = { 1.0f, 0.0f, 0.0f, 1.0f };
    shaderManager.UseStockShader(GLT_SHADER_IDENTITY, vRed);
    triangleBatch.Draw();
    // Perform the buffer swap to display the back buffer
    glutSwapBuffers();
}

///////////////////////////////////////////////////////////////////////////////
// Main entry point for GLUT based programs
int main(int argc, char* argv[])
{
    gltSetWorkingDirectory(argv[0]);
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH | GLUT_STENCIL);
    glutInitWindowSize(800, 600);
    glutCreateWindow(“Triangle”);
    glutReshapeFunc(ChangeSize);
    glutDisplayFunc(RenderScene);
    GLenum err = glewInit();
    if (GLEW_OK != err) {
        fprintf(stderr, “GLEW Error: %s\n”, glewGetErrorString(err));
        return 1;
    }
    SetupRC();
    glutMainLoop();
    return 0;
}

错误消息给出：

1>------ Build started: Project: openglproj, Configuration: Debug Win32 ------
1>Compiling...
1>Triangle.cpp
1>d:\xing bizhou\project\openglproj\triangle.cpp(57) : error C2065: '“Triangle”' : undeclared identifier
1>d:\xing bizhou\project\openglproj\triangle.cpp(62) : error C2065: '“GLEW' : undeclared identifier
1>d:\xing bizhou\project\openglproj\triangle.cpp(62) : error C2146: syntax error : missing ')' before identifier 'Error'
1>d:\xing bizhou\project\openglproj\triangle.cpp(62) : error C2017: illegal escape sequence
1>d:\xing bizhou\project\openglproj\triangle.cpp(62) : error C2059: syntax error : ')'
1>Build log was saved at "file://d:\XING BIZHOU\project\openglproj\openglproj\Debug\BuildLog.htm"
1>openglproj - 5 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Answer 1

您在代码中使用“漂亮的引号”。

C ++期望一个特定字符 "用作双引号 。它可能不会被类似外观的字符所取代。

更改：

“Triangle”和“GLEW Error: %s\\n”

至：

"Triangle"和"GLEW Error: %s\\n"