private void FW_Paint(object sender, PaintEventArgs e)
{
Glut.glutInit();
Glut.glutInitDisplayMode(Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH);
Gl.glViewport(0, 0, FW.Width, FW.Height);
Gl.glClearColor(0f, 0f, 1f, 1);
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);
Glut.glutWireSphere(2, 32, 32);
Gl.glFlush();
FW.Invalidate();
}