How to use an API contained within a .dll ?

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5 total messages Started by Cozimworsit Wed, 13 Jun 2001 14:51

#171

Author: Cozimworsit
Date: Wed, 13 Jun 2001 14:51

6 lines
1510 bytes

I would like to get the values generated by windows' defaulft SNMP component
(snmpapi.dll i think).
How can I do that ?
Actually I want to get the speed of data transfers over an ethernet
interface (Total data transferred(ko) divided by time (s) ) So I need need
to read the "Total data transferred" value.

Re: How to use an API contained within a .dll ?

#172

Author: Bert Kortenbach
Date: Thu, 14 Jun 2001 11:55

25 lines
2017 bytes

Hello,

I would dynamically load the DLL with loadlibrary. If the DLL is found
(handle <>0) I would try to get the adress of the functions contained within
the DLL by calling GetProcAddress. If GetProcAddress returns a valid adress,
I call the function and get the results I want...

Is that what you mean ?

Bert



Cozimworsit <cozimworsit@e-wc.org> schreef in berichtnieuws
9g8049$stg$1@reader1.fr.uu.net...
> I would like to get the values generated by windows' defaulft SNMP
component
> (snmpapi.dll i think).
> How can I do that ?
> Actually I want to get the speed of data transfers over an ethernet
> interface (Total data transferred(ko) divided by time (s) ) So I need need
> to read the "Total data transferred" value.
>
>
>

Re: How to use an API contained within a .dll ?

#173

Author: Cozimworsit
Date: Thu, 14 Jun 2001 14:41

17 lines
1847 bytes

"Bert Kortenbach" <bkortenbach.aut@rbk.NoSpam.nl> a �crit dans le message
news: 992519189.11551.0.pluto.d4ee8199@news.demon.nl...
> Hello,
>
> I would dynamically load the DLL with loadlibrary. If the DLL is found
> (handle <>0) I would try to get the adress of the functions contained
within
> the DLL by calling GetProcAddress. If GetProcAddress returns a valid
adress,
> I call the function and get the results I want...
>
> Is that what you mean ?
>

Yes, could you give me an example (loadlibrary, getprocadress and using the
procedures contained in the dll) ?

Re: How to use an API contained within a .dll ?

#174

Author: Bert Kortenbach
Date: Mon, 18 Jun 2001 15:01

37 lines
2641 bytes

Hi,

I could give you an example, but that is only a small part of the
information you would need to get your DLL stuff up and running. I would be
best to read the help file (Win API) for information on Getprocaddress
e.t.c. Be aware of the fact that some DLL's use C calling conventions and
others use Pascal calling conventions (stack responsebility). (Delphi help
on 'stdcall' gives info on that issue).

www.deja.com (now Goole) gives you access to a large hystorical database of
this (and others) newsgroup.

Bert


Cozimworsit <cozimworsit@e-wc.org> schreef in berichtnieuws
9gajsu$5d3$1@reader1.fr.uu.net...
>
> "Bert Kortenbach" <bkortenbach.aut@rbk.NoSpam.nl> a �crit dans le message
> news: 992519189.11551.0.pluto.d4ee8199@news.demon.nl...
> > Hello,
> >
> > I would dynamically load the DLL with loadlibrary. If the DLL is found
> > (handle <>0) I would try to get the adress of the functions contained
> within
> > the DLL by calling GetProcAddress. If GetProcAddress returns a valid
> adress,
> > I call the function and get the results I want...
> >
> > Is that what you mean ?
> >
>
> Yes, could you give me an example (loadlibrary, getprocadress and using
the
> procedures contained in the dll) ?
>
>

Re: How to use an API contained within a .dll ?

#175

Author: Cozimworsit
Date: Tue, 19 Jun 2001 14:07

20 lines
2214 bytes

it's ok for the example, i managed to create and use my own test dll

now I would like to know the name of the procedures/functions (and its
parameter(s) if needed) in SNMPAPI.dll (18kb) to get the total bytes
transferred (download and then upload) during a windows session...
Do you know them ? Or a way to get them ? Or some documentation about
it ?


> I could give you an example, but that is only a small part of the
> information you would need to get your DLL stuff up and running. I would
be
> best to read the help file (Win API) for information on Getprocaddress
> e.t.c. Be aware of the fact that some DLL's use C calling conventions and
> others use Pascal calling conventions (stack responsebility). (Delphi help
> on 'stdcall' gives info on that issue).
>
> www.deja.com (now Goole) gives you access to a large hystorical database
of
> this (and others) newsgroup.

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