DLL callbacks in VB

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2 total messages Started by Tom Hill Wed, 27 Jan 1993 05:25

#834

Author: Tom Hill
Date: Wed, 27 Jan 1993 05:25

10 lines
697 bytes

Hi -

Does anyone know if it is possible to register for callbacks from a DLL
within visual basic 2.0? In particular, I would like to open a midi input
device. The callback can either be to a function, or as a message posted
to a window. (I'd like to be able to do both).

Any suggestions appreciated.

Tom Hill

Re: DLL callbacks in VB

#831

Author: Tommy Petersson
Date: Wed, 27 Jan 1993 09:51

24 lines
1408 bytes

hill@netcom.com (Tom Hill) writes:
: Hi -
: 
: Does anyone know if it is possible to register for callbacks from a DLL
: within visual basic 2.0? In particular, I would like to open a midi input
: device. The callback can either be to a function, or as a message posted
: to a window. (I'd like to be able to do both).
: 
: Any suggestions appreciated.
: 
: Tom Hill


It doesn't seem to be possible to do that directly in Visual Basic (though
I may be wrong). I beleive you will have to write a VBX (normally in C) and
add it to your VB environment.

Desaware sells an add-on, "SpyWorks-VB", that seems to do that and more.
I beleive MicroHelp has a CallBack VBX as well.

-- 
=============================================================================
 Tommy Petersson              tope@enea.se              Enea Data AB, Sweden
=============================================================================

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