[AD] directX multi-monitor systems.

[aj <aj@xxxxxxxxxx>]

lines 48 to 61  of  /allegro4.1.16/src/win/wddraw.c

the call to DirectDrawCreate()  passes NULL..as one of the arguments..

MSDN says this:
"On systems with multiple monitors, specifying NULL for lpGUID causes the 
DirectDraw object to run in emulation mode when the normal cooperative 
level is set."

in this document:
http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/ddraw7/directdraw7/ddref_6oxj.asp

so it appears that multi-monitor systems will run in emulation mode.
this will  not help performance very much.


aj.