2006-04-29T21:58:13Z Photos, electronics, cnc, and more Jeff Eplerjepler@unpythonic.net 2006-04-29T21:58:13Z 2006-04-29T21:58:13Z https://gamma.unpythonic.net/software/01146347893 I was staring too long at a screenshot of a graph on some web page, wishing I could tell if two things lined up. Well, inspiration struck, and this program was born. Two windows&mdash;one that is one pixel wide, and another that is one pixel tall&mdash;are created, and they follow the mouse around every 1/10 second or so. They're displaced by one pixel so that clicking will hit the underlying window, not the crosshair. <p>I apologize for the changing colors, since xor isn't available with this simple method of drawing the lines, it's the only way to be sure to get contrast. I considered making the color depend on e.g., whether SHIFT is pressed, but if Tk provides this information to a window that doesn't have focus, I overlooked it in the manpages.