Hi,
I would like to use the TET[1] in FPC on Windows.
There are 2 options:
1- Translate C header to use libtet.dll (I prefer); 2- Use the COM object (TET_com.dll);

I can use COM in Delphi 7 easily. There is a Wizard to translate call from COM object to Object Pascal... But I would like to use FPC!

Somebody can help me to use h2pas tool to translate the C header in attachment?

[1] http://www.pdflib.com/download/tet/

Thanks,

Marcos Douglas

Anyone?
At least tell me why h2pas can not parse this header file, please.

Marcos Douglas

The file is not big, why don't you just convert it manually?

Felipe Monteiro de Carvalho wrote

The file is not big, why don't you just convert it manually?

There are 2 reasons:
1- I do not know C very well.
2- Because the first reason, maybe I expended much time to do this. I would like the help of h2pas tool.

Thanks,

Marcos Douglas

If you have any question about translating manually I can help.

Felipe Monteiro de Carvalho wrote

If you have any question about translating manually I can help.

OK, thank you!
Answer me: if you were to use this lib, which way do you choose? ActiveX (Delphi or FPC), translate header or use another language with support (Java, .NET, Pyhon, Perl, etc... see here
http://www.pdflib.com/products/tet/how-to-use-tet/ ).

Marcos Douglas

In this case:
1) because h2pas doesn't use pascal macro's. A construct like #if defined(WIN32) && !defined(PDFLIB_CALL)
#define PDFLIB_CALL __cdecl
#endif
can not be translated using pascal constants or functions. Cdecl is a calling convention modifier.
2) afaik pascal doesnt support widestring constants. Therefor h2pas doesn't understand
#define IFILTER_WCHAR_LONG_VERSIONSTRING L"4.0p7". In this case, the string doesn't contain non-ascii characters and pascal will assign (convert) correctly a ascii string to a widechar string. So you can just solve the problem by
const IFILTER_WCHAR_LONG_VERSIONSTRING=IFILTER_LONG_VERSIONSTRING;

Ludo

Marcos Douglas wrote

Answer me: if you were to use this lib, which way do you choose? ActiveX (Delphi or FPC), translate header or use another language with support (Java, .NET, Pyhon, Perl, etc... see here http://www.pdflib.com/products/tet/how-to-use-tet/ ).

I would translate the headers manually and use that.

I am sending back what I translated in 2 minutes of work. You can use as a model.

From your question COM or header, I assumed you are only interested in

windows. I also assume that you don't want to export functions defiend. So, I did the following:
- removed PDFLIB_API and PDFLIB_CALL (point 1 in my previous message)
- replaced the L".." defines by one to the char version (point 2)

The result from h2pas is attached. What needs to be done:
- add stdcall; behind all functions that had PDFLIB_API. Both in interface and implementation part.
- if you are linking dynamically replace in the functions that had PDFLIB_CALL in the implementation part

  begin
    { You must implement this function }
  end;

with

  external 'name of the lib';

- as always, review the translation

Ludo

WHAT? 2 minutes?!
Oh.. you just begun the translate... hehe =)

Thanks!
Marcos Douglas

Yeah!
I did the 2 points above, like you... but I can't compile yet. Other errors occurred.

Can you send the tetlib.h that you modified? With it I can run h2pas again with others parameters, like external lib, stdcall, type conversion, etc.

Thank you.

Marcos Douglas

Here you go,

Ludo

Ludo Brands wrote

Here you go,

Now I can learn a bit more about C language, comparing your header file with my (incomplete) header file.

Thanks,
Marcos Douglas

Remember, what I did was just educated "arm twisting" the input file so that h2pas could understand the input and do the bulk of the work. There is still quite some work to do after on the pp file. Some can be done from looking at the header file only, others need a better knowledge of the API.

Ludo

Yes, I understand.

Marcos Douglas