That's a simple maths question, not GTK. If the user picks (x1,y1) and (x2,y2), then the points along that line conform to y = (y2 - y1)/(x2 - x1) * (x - x1) + y1. (I think!) So plug in values for x from x1 to x2, and pull out y (with appropriate whole-number rounding.) Hope that's vaguely helpful! -- Andrew Fredrik Persson wrote: > I writing a gtk application where I need to do the following; let the user > mark two pixels in a drawingarea (as you would if you were to draw a line > in, for example, the gimp) and then, somehow, have the pixel values along > that line be returned to me in some form. The goal is to present a graph to > the user with those pixel values. > > The problem at hand is; how do I get those pixel values? > > (And I'm writing this in pyhon, so if someone wants to provide code > examples > in python, that would be great.) > > TIA! > > /Fredrik Persson > > > ------------------------------------------------------------------------ > > _______________________________________________ > gtk-list mailing list > gtk-list@xxxxxxxxx > http://mail.gnome.org/mailman/listinfo/gtk-list _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
