Re: Help with Assembler

Thanks Jeff I found it, but when i tested the code, i got this 
message error : "Invalid Variant Type Conversion" I have no ideia why 
this is happening. I don't know if i am using it right. 
The code is : 

procedure TForm1.FormCreate(Sender: TObject);
var
sec : SECURITY_ATTRIBUTES;
begin
sec.nLength := 10;
sec.lpSecurityDescriptor := nil;
sec.bInheritHandle := TRUE;
createfile('LPT1',2,1,@SEG,2,3,Null);
end;

Sorry if I'am annoying you and thanks for everything.

--- In [email protected], "Jeff Steinkamp - N7YG" 
<n7yg@e...> wrote:
> Dave
> 
> Before I send you a bunch of files you don't really need, find the
> Win32SDK.hlp file and launch it by itself.  Use the index and see 
if it
> will find CreateFile.  If that works, then you have everything you 
need.
> Just need to include that into the Delphi help environment.
> 
> Jeff
> 
> > -----Original Message-----
> > From: davidmuinos [mailto:davidmuinos@u...]
> > Sent: 09 July, 2003 14:43
> > To: [email protected]
> > Subject: Re: [Delphi] Help with Assembler
> >
> >
> > Thanks guys for helping me.
> >
> > Glenn, i am trying to control a box that i made. It has 8 Leds 
and 4
> > buttons. I want to learn how to control such simple hardware so 
that
> > i can  , as a next step, control other things that i may connect 
to
> > the parallel port.
> >
> > Jeff, I just have the file win32SDK. If You could send the other 
file
> > i'd appreciate! I'm using Delphi6 (built 6.163).
> >
> > Thanks Again !
> >
> >
> >
> > --- In [email protected], "Jeff Steinkamp - N7YG"
> > <n7yg@e...> wrote:
> > > Not sure which version of Delphi you are using, but you should 
have
> > the
> > > help files for  the Win32API and win32SDK in the help folders.  
If
> > they
> > > are not there, let me know and I can send you those files and 
you
> > can
> > > update your help files.  The files have just about every API
> > covered.
> > >
> > > Jeff Steinkamp
> > >
> > >
> > > > -----Original Message-----
> > > > From: Glenn B. Lawler [mailto:gblawler@i...]
> > > > Sent: 09 July, 2003 11:59
> > > > To: '[email protected]'
> > > > Subject: RE: [Delphi] Help with Assembler
> > > >
> > > >
> > > > David,
> > > >
> > > > > Thanks Glenn for answering my question ! You are right, i 
need
> > to do
> > > > > both( input and output ). So you told me that i may need to 
use
> > the
> > > > > Windows API,but i haveno ideia how to do that ! Please  
could
> > you
> > > > > tell me how ? Because i am a beginner in this subject !
> > > >
> > > > Check Delphi help for "OpenFile". This topic should reference
> > > > the Windows
> > > > API function for opening a file. I haven't tried this approach
> > with a
> > > > device opened for Input/Output, but this is where I would
> > > > start since it is
> > > > likely to be the simplest approach.
> > > >
> > > > You might get better help from the list on this if describe
> > > > (briefly) what
> > > > it is you are trying to do. When you say you want both input
> > > > and output via
> > > > the LPT port, it sounds like you are trying to control some
> > > > device that is
> > > > not a printer. If, on the other hand, you are trying to
> > > > control a printer
> > > > that talks back through the LPT port, there are specific API
> > > > calls that
> > > > address virtually all the printer issues.
> > > >
> > > > HTH,
> > > >
> > > > - Glenn Lawler
> > > >
> > > >
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