感觉是vc6环境没设置好：
出错问题是：
Compiling...
aa.cpp
c:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : error C2144: syntax error : missing ';' before type 'void'
c:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

aa.obj - 3 error(s), 0 warning(s)

源代码如下：
    #include <GL/gl.h>
    #include <GL/glaux.h>
    #include "glos.h"

    void main(void)
    {
     auxInitDisplayMode(AUX_SINGLE|AUX_RGBA);
     auxInitPosition(0,0,500,500);
     auxInitWindow("simple");
     glClearColor(0.0,0.0,0.0,0.0);
     glClear(GL_COLOR_BUFFER_BIT);
     glColor3f(1.0,0.0,0.0);
     glRectf(-0.5,-0.5,0.5,0.5);
     glFlush();
     _sleep(1000);
    }