Re: [Mingw-users] C/C++ question (OT)

[Oleg S. <se...@ma...>]

Hello,

Raffaele Sandrini wrote:
> 
> I am confused :-)...
> 
> Everywhere i can see function deklarations/definitions like for example:
> 
> DWORD WINAPI PlayThread(LPVOID lpParameter);
>                 ^^^^^^^
> What the hell does the WINAPI mean and where is that defined? DWIRD is the
> type and PlayThread the name and so on I didn't know that there can be
> something between the type and the name and beleve me, i searched much
> doc...

It is a place for function call style declaration, i.e which order is
used to put arguments of a function to stack, and who is responsible for
clearing stack on return and for marking function as
exportable/importable.

there are several possible call style keywords: __stdcall, __cdecl,
__fastcall, 	__attribute__((regparm(3)))
and two export control keywords: __declspec(dllexport) and
__declspec(dllimport)

WINAPI is defined as __stdcall in winbase.h

these declarations can be mixed:

#ifdef MY_EXPORT_SYMBOLS
#define MY_EXPORT __declspec(dllexport)
#else
#define MY_EXPORT __declspec(dllimport)
#endif

BYTE MY_EXPORT WINAPI foo();

export control keywords could appear near variables to export them as
well.

> 
> I think that will be an easy one... :-)
> 
> cheers,
> Raffaele

Oleg Sesov.