thanks, but I know all about Irfanview. Irfanview is incredible and I have hundreds of ahk routines to help me use it. Photoshop outdoes Irfanview, but at a huge cost and photoshop is very slow to initiate, costly of cpu and storage. But, for advanced editting it is the king.
I am only writing this question because with Win7 on my recently retired desktop there were no rending issues with AHK and pictures. Now, there are. It may be that I had a different video card, though both are Nvidia. I, as always, suspect Windows to be the culprit, or something about it's picture rendering that was overlooked by AHK (presumably, I wish I knew) invoking a windows utility.
see my first question, which addresses the issue from a different piont of view. It has gotten no replies.
it is here:
viewtopic.php?f=76&t=122876&p=545925#p545925