🚀 go-pugleaf

In article <1993Jan9.085030.11967%gtonwu@Uz.nthu.edu.tw> gtonwu@Uz.nthu.edu.tw writes:

>Hi, there 
>
>     I am confused by type data types of MSC ! I don't know what is the
>     difference among them , since I was simply using int,unsigned,char..
>     while I did programming under MS-DOS before    !
>
>     Would someone kind enough to tell me the distict difference of the 
>     following !?
>
>       WORD , DWORD, LONG, WPARAM, LPARAM , ... 
>
>       and some others I have to know !
>

Basically, the reason these new types are there is so you can write source
code which is portable between 16 and 32-bit versions of Windows.  Eg, an
"int" is 16 bits in Windows 3.1, but 32 bits in Windows NT.  A "WORD", on the
other hand, is *always* 16 bits and so is portable.

Basically,

    WORD = unsigned int
    DWORD = unsigned long
    LONG = long

but there's really no need to *know* that.  Just declare your own variables
using the appropriate types and you'll be OK.  If you really *must* know,
the new types are all defined in "windows.h".

The best way to make sure you're using all the new types correctly is to
#define STRICT and then get rid of all the warning messages you'll most
likely get.

>
>-- 
>+--------------------------------------------------------------------------+ 
>| Tony Wu.   (: gtonwu@uz.nthu.edu.tw :)  National Tsing Hua Univ. CHE 95. |
>|                                                                          |
>|    @@#  Hey," You can't beat the feeling !". #@@                         |
>

Chris
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| Chris Marriott                           | chris@chrism.demon.co.uk    |
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