The Origin Forum - Support C++ in external DLL fitting function

The Origin Forum

Username:	Password:
Save Password
Forgot your Password? \| Admin Options

All Forums

Origin Forum

Support C++ in external DLL fitting function

New Topic

Reply to Topic

Printer Friendly

Author

Topic

Leo_Li

China
Posts

Posted - 03/05/2007 : 11:43:31 PM

Origin Version (Select Help-->About Origin): 7.5
Operating System: Winxp

Trying to fit a quite complex user-defined external dll function. The template provided in File Exchange supports .c grammar only. Is there any template showing how to code external dll by .cpp in visual c 6.0? thanks.

-leo

Leo_Li

China
Posts

Posted - 03/07/2007 : 12:02:11 AM

Seems that Ocolleagues are busy so I did it by myself. Here is the procedure to share with those who have the same request.

Definition of the problem:
If you want to sovle a complicated fitting problem, which involes
1) calculation of complex numbers (#include <complex>);
2) calling memeber functions of an existing C++ class;
3) you are an OOP lover.

Solution of the problem:
General an external DLL for the fitting function based on
http://www.originlab.com/FileExchange/details.aspx?fid=105

Modifications required:
1) rename FitFuncs.c to FitFuncs.cpp
2) replace FAR PASCAL by __stdcall
3) delcare LPDOUBLE and LPSHORT in this way instead:
typedef double* LPDOUBLE;
typedef short* LPSHORT;

that's all.
-leo

larry_lan

China
Posts

Posted - 03/07/2007 : 12:14:49 AM

Thanks, Leo

God, I just want to wait for CP to answer this post, ^_^

Larry
OriginLab Technical Services

Topic

New Topic

Reply to Topic

Printer Friendly

Jump To:

The Origin Forum

Snitz Forums 2000