Hello all!

I am trying to use a third party DLL for Communications.

The documentation lists one the routines using the following function protocol:

hPORT COMMWinInit(WORD, long, short, short, short, WORD, WORD)

I have created a DLL Function Protocol in the SYSPROCS file using the following definition:

MCW32.DLL

LPVOID PASCAL COMMWinInit(DOUBLE, LONG, SHORT, SHORT, SHORT, DOUBLE, DOUBLE)

I then ran Declare_FCNS and created the neccessary SYSOBJ items.

However, when I run the routine, I get the following error message:

Function COMMWININIT does not exist in dynamic link library MCW32.DLL

Where do I go from here? Did I properly convert the parameter types? If the parameter type are not correctly defined, would the above error message be received?

Any help is appreciated. I can forward over a copy of the DLL if anyone wants to run any tests.

Thanks in Advance,

Eric H. Hilder

Eric

DOUBLE is 8 bytes. Try LONG instead for WORD. But my bet is there's something different causing the error message.

- Oystein -

Eric,

Just a thought here, but based on the name of the DLL it appears to be a 32-bit DLL and OI is a 16-bit app. You can thunk the DLLs but that usually requires writing your own DLL in C that you call instead, it turns around and calls the 32-bit DLL, and then returns the results back to you.

I may be way off base here, but that's all I can think of.

Matt Sorrell

msorrel@greyhound.com

You may be onto to something here. I will have to call the company. They were supposed to supply a 16-bit DLL as well, but they only sent me the 32-bit DLL.

Thanks for the insight.

Eric H. Hilder

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