[DUG] Midas.dll

[Myles Penlington]

It's a COM object so has to be registered. However I think a simple
search is also done from memory -i.e. the  Delphi units also do a
loadLibrary() if the midas COM objects are not registered - hence why it
gets a bit complex.

Myles.


-----Original Message-----
From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
On Behalf Of David Brennan
Sent: Wednesday, 3 October 2007 02:37
To: 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Midas.dll

Rohit,

By my understanding this won't work reliably. I don't think there is any
guarantee that Windows will use midas.dll from the executable directory.


The first time the midas library is requested Windows will search for
midas.dll and during this search it will find it in the executable
directory. From then on it will remember that it should ALWAYS look at
that
location for midas.dll. So if you delete that folder (and midas.dll) and
then install your app (or another app) which requires midas.dll in
another
folder I believe Windows will spit the dummy and say it can't find
midas.dll... even if you have included a copy in the new application
folder.
It is still looking for the one in the old folder.

I wouldn't swear to it but that's my experience anyway.

Cheers,
David.


-----Original Message-----
From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
On
Behalf Of Rohit Gupta
Sent: Wednesday, 3 October 2007 11:10 a.m.
To: NZ Borland Developers Group - Delphi List
Subject: Re: [DUG] Midas.dll

I try to the keep the update size down for quick web updates, so every 
possible external dll/bpl gets used.  We have only ever had one instance

where the exe required the new dll.  With the next release, all dlls and

bpls are now going to be in the exe directory.  And I was amazed the the

app compiled with D2007 carried on working when I had forgotten to 
bundle the new midas.dll  Found it though, it was just XP hiding it. The

placing of the dlls also helps with Vista admin rights issue.

Alfredo Ferrer wrote:
> Hi,
>  
> We used to deploy midas.dll separately in each client machine until 
> after reading a similar article mentioned by Traci and yes, we got rid

> of this problem by simply adding "midaslib" to the project's  "uses" 
> clause. We are using Delphi 7.

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