Hi,
I trying to write a DLL from a Visual C specification and (not really knowing C
much at all) I need a little help with some of the conversion:
1) I presume I can convert all the straighforward #Defines into consts?
2) Can I convert the macro defines into functions? eg what would:
#define AlphaByte(x) (((x))>>ALPHA_SHIFT)
map to?
3) there is one particular conditional define that I am not sure about at all:
#ifndef DLLEXPORT
#define DLLEXPORT __declspec( dllexport )
#endif
then at the end of the header file there is:
DLLEXPORT VisInfo* QueryModule(void); /* exported DLL */
I understand that DLLEXPORT will be replaced with __declspec( dllexport ),
but it's the only place so why bother defining it? And what does it do? and can
I achieve the same thing in Delphi?
4) Can I ignore the #pragmas? There is only one (used in a couple of places):
#pragma pack (push, 8) and #pragma pack (pop, 8)
5) When compiling are there any special flags etc that I should use to ensure
it's as compatible as possible with a Visual C compiler's output?
Thanks for any help,
Phil Middlemiss.
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