16 bit DLL won't work with Delphi 2.0

Ryan.Mi...@nottingham.ac.uk (Ryan Mills)

Delphi Developer

Mon, 03 Apr 2000 03:00:00 GMT

16 bit DLL won't work with Delphi 2.0

I have a 16bit DLL written in C which I want to use in D2. If I declare the DLL and its functions as so:

interface
function master_volume (left,right:WORD):word;
function wav_volume (left,right:WORD):word;
implementation
function master_volume;External 'VOL.DLL';
function wav_volume;External 'VOL.DLL';

And later on in the program try to use one of the functions:

master_volume (0,0);

On compliation:

Delphi 2.0 tells me that VOL.DLL is corrupt and then stops.
Delphi 1.0 compiles and runs OK.

(n.b. VOL.DLL uses mmsystem.dll)

Can anyone help??

Thanks, Ryan.

A.A. Olowofoye

Delphi Developer

Tue, 04 Apr 2000 03:00:00 GMT

Re:16 bit DLL won't work with Delphi 2.0

Quote

Ryan Mills (Ryan.Mi...@nottingham.ac.uk) wrote:

: I have a 16bit DLL written in C which I want to use in D2. If I declare the DLL and its functions as so:
:
: interface
: function master_volume (left,right:WORD):word;
: function wav_volume (left,right:WORD):word;
: implementation
: function master_volume;External 'VOL.DLL';
: function wav_volume;External 'VOL.DLL';
:
: And later on in the program try to use one of the functions:
:
: master_volume (0,0);
:
: On compliation:
:
: Delphi 2.0 tells me that VOL.DLL is corrupt and then stops.
: Delphi 1.0 compiles and runs OK.
:
: (n.b. VOL.DLL uses mmsystem.dll)

You cannot call a 16-bit DLL from a Win32 (Delphi 2.0) program, without
using thunking. Compile your C sources into a Win32 DLL, and your problem
with D2 should disappear.

Best regards, The Chief
--------
Dr. A{*word*73}la A. Olowofoyeku (The African Chief)
Email: la...@keele.ac.uk
Author of: Chief's Installer Pro 4.01 for Win16 and Win32:
Winner of PC PLUS Magazine Gold Award (April 1995 U.K. edition)
http://ourworld.compuserve.com/homepages/African_Chief/
ftp://ftp.demon.co,uk/pub/ibmpc/win3/apps/chief/pro/chief401.zip

Heiko Lüttg

Delphi Developer

Tue, 11 Apr 2000 03:00:00 GMT

Re:16 bit DLL won't work with Delphi 2.0

You can't use 16bit Dlls with 32bit exe. Look for a 32bit dll.

Heiko

Ryan Mills <Ryan.Mi...@nottingham.ac.uk> schrieb im Beitrag
<624pkc$...@paperboy.ccc.nottingham.ac.uk>...

Quote

> I have a 16bit DLL written in C which I want to use in D2. If I declare

the DLL and its functions as so:

Quote

> interface
> function master_volume (left,right:WORD):word;
> function wav_volume (left,right:WORD):word;
> implementation
> function master_volume;External 'VOL.DLL';
> function wav_volume;External 'VOL.DLL';

> And later on in the program try to use one of the functions:

> master_volume (0,0);

> On compliation:

> Delphi 2.0 tells me that VOL.DLL is corrupt and then stops.
> Delphi 1.0 compiles and runs OK.

> (n.b. VOL.DLL uses mmsystem.dll)

> Can anyone help??

> Thanks, Ryan.

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