Mailing lists / fpc-pascal / 2001-04
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Hello all,
are the FPC interfaces binary compatible with COM interfaces ? So that it were possible to interface to existing COM classes like it possible with Delphi ? No need to create new COM interfaces (or extend them or whatever) but simply call them in a more convenient way.
I guess not, but it never hurts to make sure and ask since a long time has passed when I last asked....
Regards,
Thomas
At 4/2/01 04:12 PM, you wrote:
Thomas,
are the FPC interfaces binary compatible with COM interfaces ? So that it were possible to interface to existing COM classes like it possible with
Delphi?
I call an OLE Automation server from a program but I couldn't find a better way than to implement my own calling interface. Simple but requires a considerable amount of typing.
I had a lot of headache before I realized that the variables used in the process have to be aligned on four-byte boundaries and, as FPC does not provide a means to specify alignment (I don't mean records but plain variables), I had to pad my important variables manually. Also I found that it only works if I use the -al switch. I didn't actually investigate why...
Regards,
Gabor DEAK JAHN
------------------------------------------------------------------- Gabor DEAK JAHN -- Budapest, Hungary.
WWW: www.tramontana.co.hu
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are the FPC interfaces binary compatible with COM interfaces ? So that it were possible…
Hello,
here's a reply from Florian Klaempfl to me in private due to problems with the mailing list server (translated). Probably someone is interested in it too:
Hello all, are the FPC interfaces binary compatible with COM interfaces ?
Should be the case.
So that it were possible to interface to existing COM classes like it possible with Delphi ? No need to create new COM interfaces (or extend them or whatever) but simply
Should be possible too.
call them in a more convenient way. I guess not, but it never hurts to make sure and ask since a long time has passed when I last asked....
COM - support for Interfaces has not been tested yet but should work in principle. The Delphi DX8 headers should compile perfectly.
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Note that some small problems / Delphi incompatibilities are remaining. These incompatibilites are currently being resolved by him.
Regards,
Thomas