i`ve heard about trick by which a com file can be executed in 32bit mode and is able to call any of windows` functions.

anyone heard about this?

This may be useful for erveryone interesed this problem - file in this link contains DOS documentations about Interrupts, ( full version of this doc contains also CMOS, x86 bugs, ports and more )

THe author of this Files is Ralf Brown

The link : http://80.48.56.2/~grog/gr0g/inne/extras/specyfikacje/interrup.zip

rambo, I don't think that is possible; however, many of the <64kb demos use a .com file 'dropper' for the real win32 exe file, since you can write very small and pretty efficient decoders for .com files.

maybe wat you meant are some multiplex interrputs (int 2Fh i think) which are created by DOS 7.0 (one which comes with windows), They have functions like creating file with long name, etc. to use some of windoze's unctionality under DOS, but they aren't really windoze's functions

They only allow very limited functionality, and they only work while windows is loaded (dos box under windows = works, plain DOS7 mode = doesn't)

Look at this attached file - it's a part of linked by me Doc about interrputs - I edited only Interput functions that is about Windows

You can get adress of API entry point, and more interrising - get device api point

Sorry that this Doc is only for Win.311 max.
( Interputs writed in this file maybe can't run in WinXP - i don't know )

Could you execute say Rundll32.exe from the com with command line parameters. If so that would be a cheesy api usage hack.