I am using Visual C++ 1.5 to write 16-Bit .DLL files for OI. Using the functions in the kernel I am trying to thunk to 32-Bit .DLL's I have a 16-Bit program written in VC++ 1.5 that thunks to 32bit .dll's – It works fine. When I try to make a .DLL file out of it, OI will run the 16 bit .dll file, but it fails on the thunking function LoadLibraryEx32W (The pointer that is returned is NULL). I would normally suspect the .DLL side for this problem, but Thunking is working fine when I call it from an external program. Has anyone thunked in OI before that could either lend a hand, or e-mail sample thunking code that you have working.

Thanks – [email protected]

Hi Ken:

Unfortunately, we do not provide support for thunking or other advanced Windows programming issues using C/C++. However, you might want to check out MSDN (search for known problems/limitations with that API call) or to get in touch with Carl Pates from Sprezzatura. I have seen him respond to issues of this nature in the past.

I didn't have any luck with finding anything on our site that would help in your particular situation.

Tom Dunlop

Revelation Software

Ken, You can also find similar articles regarding this issue on our On-Line Discussion. Check the following thread, specifically:

CLICK HERE </QUOTE> ---- === At 27 MAY 1999 05:26AM [email protected],[url=http://www.sprezzatura.com]Sprezzatura Group wrote: ===

[notag]Hi Ken,

When I've used the WOW functions in the past I've always used Delphi 1 to create the 16-bit DLL's ( although I've used C++ for other things like sub-classing )

I've had no problems so far with LoadLibraryEx32W. The code's really simple so I' can't think why it's refusing to load.

hinst:=LoadLibraryEx32W(lpstrLib, 0, 0 )

Regards,

[<A HREF="mailto:[email protected]" onMouseOver="window.status='Why not click here to send me Email?';return(true)">Carl Pates</A>]

[<A HREF="http://www.sprezzatura.com" onMouseOver="window.status='Why not click here to visit our web site?';return(true)">Sprezzatura Group</A>]

[<I>World Leaders in all things RevSoft</I>]

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[<script language="javascript">function openNewPage () {window.location.href=(document.TOCNavigator.pageToGoTo.options[document.TOCNavigator.pageToGoTo.selectedIndex].value);document.TOCNavigator.pageToGoTo.selectedIndex="0";}end hiding from non-JS browsers –></script>] [<FORM ACTION "" METHOD=GET NAME="TOCNavigator" <SELECT NAME="pageToGoTo" SIZE=1 onChange="openNewPage()"> <OPTION>Pull down this menu to choose whereabouts on Sprezz site to go <OPTION VALUE="http://www.sprezzatura.com">Home Page <OPTION VALUE="http://www.sprezzatura.com/whatsnew.htm">What's New <OPTION VALUE="http://www.sprezzatura.com/senl.htm">SENL <OPTION VALUE="http://www.sprezzatura.com/patches.htm">Download S/LIST <OPTION VALUE="mailto:[email protected]">Send mail to support at Sprezzatura <OPTION VALUE="mailto:[email protected]">Send mail to sales at Sprezzatura </SELECT> </FORM>] [/notag] </QUOTE> —- === At 27 MAY 1999 10:30AM Cameron Purdy wrote: === <QUOTE>Is the DLL in the path or fully qualified? Try (just to test) copying the DLL into the Windows or Windows/System directory. Cameron Purdy Revelation Software </QUOTE> —- === At 28 MAY 1999 10:56AM Ken King wrote: === <QUOTE>I have exactly that string, but LoadLibraryEx32W is always returning a NULL pointer. I think I may have found a cause for it. The lack of an onload data segment in the 16-bit .dll may have been preventing me from loading literals into memory (This caused _fstrcpy to fail doing a simple copy "_fstrcpy(lpstr,"Hello World");" ) Unfortuanetly, the defaults for vc++ 1.5 are quite different than vc++ 5.0 and further, the functions simply fail, never reporting an error about the lack of memory space to load literals from the code. v. frustrating.. I am going to try thunking to 32bit .dll again sometime next week… </QUOTE> View this thread on the Works forum...