Hi,

>> From this point it's users responsibility to
>> pass parameters properly.
> 
> Ok. Next topic: coverage of potential C .dll functions.
> 
> IMO it's unworkable cover functions of n parameters with n size,
> seems reasonable to restrict to 15 the number of parameters.

This limit already exists, and it should be enough for 
a start. Anyway, once the scheme is developed, it will be 
easy to extend if it's worth it or required. For vast 
majority of cases 15 is enough.

> Currently only covering sizes of 4, 8 bytes in win32 and 8 bytes in win64.
> This means that calls to PosibleDLLfunc( WORD wPar, BYTE bPar ) are not 
> possible.

4 and 8 byte parameters are enough for all win32 
calling conventions. So it's possible to pass BYTE 
already.

> How many types of data have to be supported?

win32: 4 or 8 for arguments, return value can be 4, 8 bytes or double/float.
       plus each in two variations: cdecl or stdcall (winapi)
win64: 8 for argument, return value is also 8 bytes

> BYTE, WORD, DWORD, PVOID, float, double.

For win64 current solution covers all combinations, as 
there is a much simpler calling convention there, see:
   http://msdn.microsoft.com/en-us/library/ms235286(VS.80).aspx

Brgds,
Viktor

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