How do I access a new DLL in Foxpro 6? 2

[lsugirl]

I am NOT a FoxPro programmer and need some help. I created a new C# dll to handle some web requests for an old FoxPro application. The existing DLL no longer worked and they didn't have the source code. So, now i have this new DLL that I which to intergrate into FoxPro. I need to have 4 parameters passed to the DLL which has a class. Can I pass the parameters? The previous DLL call was:

DECLARE INTEGER WebHTTPRequest IN &lcWebHTTPRequestQuotes

Or do i have to put the parameters in some text file for the dll to read? If I can pass parameters, anyone know the syntax?

Thanks!!!

 

[rgbean]

What are the four parameter types that the DLL expects? Depending on the types, you'll need to alter that declaration - right now it doesn't appear to have any parameters required. (Of course not knowing what you normally have in the varible lcWebHTTPRequestQuotes does make this a guess on my part!)

Rick

 

[ramani]

Hi lsugirl

here is an example..

DECLARE INTEGER ShellExecute IN shell32.dll ;
INTEGER hndWin, STRING cAction, STRING cFileName, ;
STRING cParams, STRING cDir, INTEGER nShowWin


DECLARE INTEGER WebHTTPRequest IN myDLL.DLL



____________________________________________
ramani - (Subramanian.G)

http://winnersoft.coolfreepages.com/

 

[lsugirl]

Thanks guys. I will try that.

I'm trying to pass:
public string inst_state;
public string inst_zip;
public string inst_city;
public long TotalWeight;

The example I gave before was the OLD dll call but I'm not using that dll anymore.

 

[rgbean]

If this are all being passed by value and aren't going to be updated, then this should work:

DECLARE INTEGER NewWebHTTPRequest IN NewDLL ;
 string inst_state, ;
 string inst_zip, ;
 string inst_city, ;
 long TotalWeight

Note: The entry point name is case sensitive.

Rick

 

[lsugirl]

I have another question. I'm using a C# dll and I'm getting an error that the entry point can't be found. I have checked the name and made sure it has the correct case. I was told on the C# forum that C# dlls aren't true dlls. "To call it from another language, program, etc., you'd have to use .NET (duh), or COM (tell the IDE to write a COM-callable wrapper)."

Any examples on writing a COM-callable wrapper? Would that even work?

Thanks in advance.

 

[craigber]

If it's C#, you'll have to go through a COM/.NET interop. See

http://www.west-wind.com/presentations/VFPDOTNETiNTEROP/VFPDOTNETINTEROP.HTM

Craig Berntson
MCSD, Visual FoxPro MVP,

http://www.craigberntson.com

Author, CrysDev: A Developer's Guide to Integrating Crystal Reports"

 

[lsugirl]

Cool. thanks