Here is a simple programme below, i dont konw why the NET told me this #include <GL/gl.h> #include <GL/glu.h> #include <GL/glut.h> #include <stdlib.h> GLubyte rasters[24] = { 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0x00, 0xff, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0xc0, 0xff, 0xc0}; void init(void) { glPixelStorei (GL_UNPACK_ALIGNMENT, 1); glClearColor (0.0, 0.0, 0.0, 0.0); } void display(void) { glClear(GL_COLOR_BUFFER_BIT); glColor3f (1.0, 1.0, 1.0); glRasterPos2i (20, 20); glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters); glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters); glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters); glFlush(); } void reshape(int w, int h) { glViewport(0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho (0, w, 0, h, -1.0, 1.0); glMatrixMode(GL_MODELVIEW); } void keyboard(unsigned char key, int x, int y) { switch (key) { case 27: exit(0); } } int main(int argc, char** argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutInitWindowSize(100, 100); glutInitWindowPosition(100, 100); glutCreateWindow(argv[0]); init(); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutDisplayFunc(display); glutMainLoop(); return 0; } f:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : error C2144: syntax error : missing ';' before type 'void' f:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers f:\program files\microsoft visual studio\vc98\include\gl\gl.h(1152) : fatal error C1004: unexpected end of file found

Include "glut.h" first, before gl.h and glu.h. The glut.h includes windows.h implicitly for you.

Actually you should include only glut.h, because it includes gl.h and glu.h and defines the needed things from windows.h (it doesn't actually include windows.h as of GLUT 3.7).