Hello-

I am working on a project to convert several windows programs into linux, but I am having a hard time finding the definitions of many windows datatypes (go figure ;-)... I was hoping that someone knew what kind of datatypes DWORD, WORD, OVERLAPPED, HANDLE, and NEAR are. Also- do you have any suggestions about how to convert them? Is there a way to install windows.h onto linux?

Thanks a bunch.
Joe

As far as I know, these are correct:

DWORD = long (a 32 bit value)
WORD = int (16 bit value)
HANDLE = void *

I do not know what OVERLAPPED is. However, I've encountered NEAR keyword (I should say declaration, since Microsoft absolutely finds it necessary to declare macros for everything), and NEAR's complement, FAR. These are actually 'near' and 'far' in the C language, and aren't used often anymore (except maybe some low level stuff).

From what I remember, these keywords were used some time ago on 16 bit Intel machines. Using the 'near' keyword, would force the storage pointer to require 16 bits, whereas far would require 32 bits. far, though, would be composed of 2 near pointers, one padded with 4 bits. Effectively this would give you only 28 bits of space...

OVERLAPPED, however, never seen that. Sorry.

Hope that helps.

By the way, if you want more definitions, I suggest you check out windefs.h.

I should have mentioned this before, but, if you are looking to convert programs from Windows C code, check out Winelib at http://www.winehq.com/site/docs/winelib-user/index.

It's not perfect yet, but, it may do what you want.

This is a little misleading because int and long aren't guaranteed to be 16 and 32 bits. In particular, they are both 32 bits on x86 (maybe only a more modern subcategory of x86?), If you want a 32 bit value, you should use int32_t (and likewise int16_t) in <stdint.h>.

Very true, and I should have made a note about that in my post.

Thanks guys, that will help a lot. I will try to mess around with some of the wine and winelib stuff to see how that goes.

Joe