Hey,
Here is a simple cross drawing
using System.Drawing;
//Create graphics object to handle drawings Graphics gfx = picBox.CreateGraphics(); //Get client retangle from out PictureBox that we want the cross in Rectangle rc = picBox.ClientRectangle; //Create a new pen to draw the cross Pen RedPen = new Pen(Color.Red); int Size = 10 //Draw the actual cross gfx.DrawLine(RedPen, rc.Width / 2, rc.Height / 2 + Size, rc.Width / 2, rc.Height / 2 - Size); gfx.DrawLine(RedPen, rc.Width / 2 + Size, rc.Height / 2, rc.Width / 2 - Size, rc.Height / 2);