Creating a Window with GLUT

#ifdef WIN32
   #include <windows.h>
#endif
#include <glut.h>

void Initialize(void);
void Display(void);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,    int nShowCmd)
{
   int argc;
   char * argv[] = {"dummy",0};
   argc = 1;
   glutInit(&argc, (char **)&argv[0]);
   glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE);
   glutInitWindowSize(640, 480);
   glutInitWindowPosition(-1, -1); // Let window to determine the startup position
   glutCreateWindow("Creating a window with GLUT");
   Initialize();
   glutDisplayFunc(Display);
   glutMainLoop();
   return 0;
}

void Initialize(void)
{
   glClearColor(0.5f, 0.5f, 0.5f, 0.0f);
   glShadeModel(GL_FLAT);
}

void Display(void)
{
   glClear(GL_COLOR_BUFFER_BIT);
   glutSwapBuffers();
}