Hi!

I'm trying to convert the awt.Graphics.drawLine into OpenGL.

glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowSize(600, 300);
    (void)glutCreateWindow("GLUT Program");

How can I use glVertex2i with screen coordinates. Something like.

glVertex2i(100, 100);

Meaning that it will draw something on position x=100, y=100 on my window screen of size (600, 300)

In java one can use awt.Graphics.drawLine with window coordinates.

Please help

You can use gluOrtho2D() (if you want it to be 2D) to set the window coordinates to whatever you like.

Could do something like this.
int width = 600;
int height = 300;
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(width, height);
gluOrtho2D(0, width, 0, height);
(void)glutCreateWindow("GLUT Program");