OpenGL 错误

[chcucl]

我刚学OPENGL，照书写了个程序，发现运行出来之后没结果，求指教：

//////////////////////////////////////////////////////////////////////////
// OpenGL Test01
//////////////////////////////////////////////////////////////////////////

#include <windows.h>
#include <gl/glu.h>
#include <glut.h>


#pragma comment(lib, "glui.lib")

void init()
{
    glClearColor(0.0, 0.0, 0.0, 0.0);  /* clear RGBA color buffer. range[0, 1] */
    glShadeModel(GL_FLAT);  /* use single color to draw. (GL_SMOOTH) */
}


#define drawOneLine(x1, y1, x2, y2) \
    glBegin(GL_LINES); \
    glVertex2f((x1), (y1)); \
    glVertex2f((x2), (y2)); \
    glEnd();

void display()
{
    glClear(GL_COLOR_BUFFER_BIT);  /* clear a specific buffer */


    /* draw Red line */
    glColor3f(1.0f, 0.0f, 0.0f);  /* set color, RGB, range[0, 1] */
    glEnable(GL_LINE_STIPPLE);  /* stipple mode of line drawing */

    glLineWidth(2.0f);
    glLineStipple(1, 0x0101);
    drawOneLine(50.0, 125.0, 150.0, 125.0);

    glDisable(GL_LINE_STIPPLE);

    glFlush();
}

void reshape(int w, int h)
{
    glViewport(0, 0, (GLsizei)w, (GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0.0, (GLdouble)w, 0.0, (GLdouble)h);
}

int main(int argc, char **argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize(400, 250);
    glutInitWindowPosition(100, 100);
    glutCreateWindow(argv[0]);
    init();
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutMainLoop();


    return 0;
}