GLUT 问题：错误重新声明 C++ 内置类型“wchar_t”

Posted 2023-02-16

【中文标题】GLUT 问题：错误重新声明 C++ 内置类型“wchar_t”

【英文标题】：GLUT Problem: error redeclaration of c++ built-in type 'wchar_t'

【发布时间】：2019-12-11 18:29:15

【问题描述】：

刚刚安装了 GLUT 并给了我'error redeclaration of c++ built-in type 'wchar_t'。我搜索了解决方案，发现我应该包括<graphics.h>。但这样做并没有帮助。有什么帮助吗？

该代码是任何新 glut 项目的默认代码。

代码是：

/*
 * GLUT Shapes Demo
 *
 * Written by Nigel Stewart November 2003
 *
 * This program is test harness for the sphere, cone
 * and torus shapes in GLUT.
 *
 * Spinning wireframe and smooth shaded shapes are
 * displayed until the ESC or q key is pressed.  The
 * number of geometry stacks and slices can be adjusted
 * using the + and - keys.
 */

#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif

#include <stdlib.h>

static int slices = 16;
static int stacks = 16;

/* GLUT callback Handlers */

static void resize(int width, int height)

    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;


static void display(void)

    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
    const double a = t*90.0;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3d(1,0,0);

    glPushMatrix();
        glTranslated(-2.4,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidSphere(1,slices,stacks);
    glPopMatrix();

    glPushMatrix();
        glTranslated(0,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidCone(1,1,slices,stacks);
    glPopMatrix();

    glPushMatrix();
        glTranslated(2.4,1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutSolidTorus(0.2,0.8,slices,stacks);
    glPopMatrix();

    glPushMatrix();
        glTranslated(-2.4,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireSphere(1,slices,stacks);
    glPopMatrix();

    glPushMatrix();
        glTranslated(0,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireCone(1,1,slices,stacks);
    glPopMatrix();

    glPushMatrix();
        glTranslated(2.4,-1.2,-6);
        glRotated(60,1,0,0);
        glRotated(a,0,0,1);
        glutWireTorus(0.2,0.8,slices,stacks);
    glPopMatrix();

    glutSwapBuffers();



static void key(unsigned char key, int x, int y)

    switch (key)
    
        case 27 :
        case 'q':
            exit(0);
            break;

        case '+':
            slices++;
            stacks++;
            break;

        case '-':
            if (slices>3 && stacks>3)
            
                slices--;
                stacks--;
            
            break;
    

    glutPostRedisplay();


static void idle(void)

    glutPostRedisplay();


const GLfloat light_ambient[]  =  0.0f, 0.0f, 0.0f, 1.0f ;
const GLfloat light_diffuse[]  =  1.0f, 1.0f, 1.0f, 1.0f ;
const GLfloat light_specular[] =  1.0f, 1.0f, 1.0f, 1.0f ;
const GLfloat light_position[] =  2.0f, 5.0f, 5.0f, 0.0f ;

const GLfloat mat_ambient[]    =  0.7f, 0.7f, 0.7f, 1.0f ;
const GLfloat mat_diffuse[]    =  0.8f, 0.8f, 0.8f, 1.0f ;
const GLfloat mat_specular[]   =  1.0f, 1.0f, 1.0f, 1.0f ;
const GLfloat high_shininess[] =  100.0f ;

/* Program entry point */

int main(int argc, char *argv[])

    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(10,10);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutReshapeFunc(resize);
    glutDisplayFunc(display);
    glutKeyboardFunc(key);
    glutIdleFunc(idle);

    glClearColor(1,1,1,1);
    glEnable(GL_CULL_FACE);
    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

    return EXIT_SUCCESS;

【问题讨论】：

请发布您的minimal reproducible example 并填写错误信息。

您使用的是哪种 GLUT 实现？您是如何从源代码或二进制文件安装它的？操作系统？编译器？

我是从二进制文件安装的。我将“glut32.dll”放在“C:\Windows\SysWOW64”路径中，“glut32.lib”放在“C:\Program Files (x86)\CodeBlocks\MinGW\lib”中，“glut.h”放在“C:\程序文件 (x86)\CodeBlocks\MinGW\include\GL'。正如我在此链接中看到的那样youtube.com/watch?v=Ufpg11EqWzs。

不要靠近古老的Nate Robins GLUT。使用FreeGLUT，其实是维护的。

GLUT 不再维护，并且它的许可证不允许重新分发库的修改版本（所以没有其他人可以更新它）en.wikipedia.org/wiki/OpenGL_Utility_Toolkit FreeGLUT 得到维护和更新en.wikipedia.org/wiki/FreeGLUT

【参考方案1】：

在我的例子中，codeblocks 将编译器的路径设置为旧文件夹 C:\MinGW 下的安装。当我切换到代码块目录中的安装时，编译工作：

在codeblocks中，进入settings-compiler-toolchain executables，将编译器的安装目录改为codeblocks目录下MinGW的安装。 感谢@Joao Pedro。