External dll in foxpro 2.6 for Windows

[pcmarket]

I need to make a call to a function in an external DLL and I have not managed to find out of which way to do it, if they have some information please send to eperez@coincaint.com

 

[ChrisCarroll]

Hi,
There are two functions in FoxTools that allow you to do this.
Unfortunately FoxTools isn't documented in the online help, it's in a ReadMe file; and the readme file is hidden in a zipped file in the Goodies subdirectory...
Having unzipped it all you will find:

\fpw26\goodies\foxtools\foxtools.wri

... which opens with the description of RegFn & CallFn. The directory also contains a few examples - and if you read the thread of yesterday about 'CallFn("GetPrivateProfileString" .. not working', you'll see how to do it wrong, too :-(

Finally you will need documentation for your DLL to tell you what parameters it takes and what return type it gives.

 

[rgbean]

Also, if you are running under a 32-bit OS (basically not Win 3.x), you may want to call a 32-bit .DLL. Unfortunately in this case you can't use a "simple" Foxtools call. However there is a possible solution. Go to Rick Strahl's site

http://www.west-wind.com/wwfp2pd.htm

and get Call32 - it allows you to call Win32 functions from FoxPro 2.x. I've had success with this routine for some API calls, but others &quot;hung&quot; the system <s>.

Rick