Hah, weird topic , but anyway

So I'm just wondering that is there some way to (of course is to flip x and y in computer screen so that origin would REALLY be at downleft corner ?
Its little "dummy" question, because I don't need it for anything right now, but I'm really interested about subject

If OR when this done someway, will make any conflicts with other routines... I mean like if I'm using SOMETHING like Directdraws blitting and other things, can it "mess around" my screen because of some conflicts ?

That's actually why bitmap files are upside-down! They assume 0,0 is in the bottom left corner mathematics style.

There is a way to make that the default numbering style for a window, (maybe SetSystemMetrics? i'm not exactly sure)

I'm not a direct X guy so I can't tell you how it'll work with that.