#include<gl\glut.h>
void setWindow(double left,double right,double bottom,double top){
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 gluOrtho2D(left,right,bottom,top);
}
void draw(){
glBegin(GL_LINE_LOOP);
glColor3f(1,0,1);
glVertex2d(150,50);
glVertex2d(150,150);
glVertex2d(50,150);
glVertex2d(50,50);
glVertex2d(550,50);
glVertex2d(550,250);
glVertex2d(300,250);
glVertex2d(300,50);
glEnd();
glFlush();
}
void display(){
glClearColor(1,1,1,1);
glClear(GL_COLOR_BUFFER_BIT);
setWindow(40,560,40,300);
glViewport(40,40,140,70);
draw();
setWindow(0,200,0,200);
glViewport(250,0,350,220);
draw();
setWindow(250,400,0,270);
glViewport(40,210,200,250);
draw();
setWindow(450,600,0,270);
glViewport(290,220,350,250);
draw();
/*setWindow(0,100,0,130);
glViewport(250,0,300,220);
draw();
setWindow(500,570,200,260);
glViewport(40,220,200,250);
draw();*/
}
void main(){
glutInitWindowSize(640,480);
glutInitWindowPosition(200,200);
glutCreateWindow("new");
glutDisplayFunc(display);
glutMainLoop();
}