For those of you who wanted a resizable reticle, this is it. The reticle is up to 800x800 pixels, but the window is whatever you want. It can still be rotated and the brightness adjusted as before.
The reticle will always be centred on and rotated about the centre of the window.
As for the Image Capture Composition Aid... well I have the code written that should work... it just doesn't draw the lines...
. I know the problem will be something simple when I find it!
Al.