🚀 go-pugleaf

In article <8520002@hp-lsd.HP.COM> davek@hp-lsd.HP.COM (Dave Kumpf) writes:
>1) Why is MS-C required?

It isn't.  You can use C, Pascal or Assembler.  There are several caveats:
i)	Windows uses Pascal calling conventions (e.g. reversing the stacked
	parameters, called function pops arguments).  All calls to Windows
	and all functions which will be called by Windows must adhere to this
	convention.

ii)	All callback functions must be FAR, even if the code is small or
	compact model.

iii)	All callback functions require a special Windows prolog and epilog.
	With MS C, you include it with the -Gw option (at compile time).
	You can probably determine what the prolog and epilog are from an
	include file (cmacros.inc) supplied with the SDK.  This file is
	used when developing in Assembler.

iv)	All Windows functions that use structures used PACKED structures.
	With MS C, you use the -Zp option.

v)	You must respect MS C return value conventions.  Things which can
	be represented in 16 bits are returned in AX.  Things which require
	32 bits are returned in DX:AX.  That is, DX has high-order 16 bits,
	AX has low-order 16 bits.

As you can see, you do not NEED MS C, but good luck finding any non-MS
language which fill all these criteria.

Note:  This information was gleaned from
	Microsoft Windows Software Development Kit Version 2.00
	Programming Tools, Chapter 2 "Cl, Pascal and the Macro Assembler"

>Dave Kumpf
>hplabs!hp-lsd!davek

Greg Yachuk		Informix Software Inc., Menlo Park, CA	(415) 322-4100
{uunet,pyramid}!infmx!greggy		why yes, I DID choose that login myself