Re: Mysterious DLL's

yeah the big issue is when people install programs that use older 
versions of said dll's - if windows loads a previous 'older' version 
into memory, it causes all kinds of issues.

even though it MIGHT be the same dll name, it might not be the same date 
of build.

i recall this being a major problem with the vbrun300.dll and similar 
dll's 'way back when'. i worked tech support for a visual basic CRM 
application at the time and we had never ending problems with people 
having multiple copies of dll's all over the machine and windows not 
unloading them properly...

we do ship these particular dll's with our own engine runtime, simply 
for this very reason - there is a chance that someone doesn't have it, 
or simply doesn't have them in their system path, so better safe than 
sorry, ship it if your app needs it.

cheers
mike w
www.gekidodesigns.com

Jon Watte wrote:
> There days, MS has pretty much capitulated on the "sharing" aspect.
> 
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsetup/htm
> l/dlldanger1.asp
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsetup/htm
> l/sidebyside.asp
> 
> Cheers,
> 
> 			/ h+
> 
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of
> Chris Raine
> Sent: Wednesday, September 08, 2004 1:21 PM
> To: [email protected]
> Subject: [GD-Windows] Mysterious DLL's
> 
> 
> Coming from a console background and being more of a 3D-programmer than
> a systems coder, I had a quite confusing moment today. After finishing a
> large chunk of rendering code I decided to try out my code on other
> machines before checking in - with the result that every machine without
> visual studio installed complained about missing dlls (msvcp71.dll and
> msvcr71.dll in particular). A quick search for files showed that several
> programs (photoshop, etc) all include their own copies of these and
> other dlls in their own directories.
> 
> What is the sense of having a dynamically linked lib if every program
> provides it's own copy? Back in the old days of my unix/linux background
> I thought dll meant one image of the instruction code of the lib in
> memory for multiple programs - by providing several copies of the same
> library this benefit is destroyed.
> 
> Another question I had today was if I were to distribute my program, am
> I to include my own copies of the same libraries as other programs do,
> or is there any common practice I missed for dealing with these dlls?
> 
> I hope these questions are not too simple - MSDN had provided me with a
> wealth of information regarding everything, except answers to my
> specific questions.
> 
> 
> many thanks,
> Chris
> 
> 
> 
> 
> 
> 
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