Groups > comp.lang.basic.visual.misc > #1016

Re: 64 bit Windows install difficulty

From	"Farnsworth" <nospam@nospam.com>
Newsgroups	comp.lang.basic.visual.misc
Subject	Re: 64 bit Windows install difficulty
Date	2012-03-21 14:00 -0500
Organization	Aioe.org NNTP Server
Message-ID	<jkd8he$jdm$1@speranza.aioe.org> (permalink)
References	(5 earlier) <scmfm7teeusc2ec7f72e1krdo8j87qa8n4@4ax.com> <jk9oh3$4qa$1@dont-email.me> <00tgm7h7a1gcpdoc4pk8qt4gm48cs7rdj8@4ax.com> <jkaplp$hqd$1@speranza.aioe.org> <qcrhm7d8pbbhsqpqt74uvbrm56kmcu1925@4ax.com>

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ralph wrote:
> On Tue, 20 Mar 2012 15:34:47 -0500, "Farnsworth" <nospam@nospam.com>
> wrote:
>
>> ralph wrote:
>>> 2) Both an executable and its shared DLL (eg, App1.exe, DLL1.dll)
>>> are in the same folder (eg, c:\MyStuff) and that folder is not
>>> included in the PATH variable.
>>> A process with its current directory in say 'C:\Working' launches an
>>> executable in that folder by providing the fullpathname (eg,
>>> C:\MyStuff\App1.exe).
>>> DLL1.dll will be reported as 'missing' since the search rules will
>>> fail.
>>
>> But the search rules always include the folder where the EXE is
>> located regardless of the current directory, so in order for this
>> fail, I could think of 4 things:
>>
>> 1 - Permissions issues like you mentioned.
>>
>> 2 - Missing dependency that the DLL depends on, like you mentioned.
>>
>> 3 - Anti-virus program interference.
>>
>> 4 - Somehow the search rules didn't include the folder where the EXE
>> is located despite MS saying so. I think in Windows 3.x, it wasn't
>> included, but I am not sure. Perhaps there is a bug that makes
>> Windows not search that folder in certain situations.
>>
>
> Never where the executable is "located", but rather always the current
> directory it is "launched from". It is entirely possible for a process
> to launch an executable within a context of "current directory" wholly
> divorced from the physical location of the executable.

I didn't mean to say that the executable is "located" as in FindExecutable() 
and such, but meant the folder where the EXE is loaded from. The current 
directory can be anything. In Windows 95+, it doesn't matter what the 
current directory is, the folder where the EXE was loaded from is searched 
first. See item #1 in the search order here:

Dynamic-Link Library Search Order:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682586%28v=vs.85%29.aspx

It's easy to skip it while speed reading. I have missed it few times myself. 
MS even added more exceptions in recent versions of Windows that I wasn't 
aware of. To add to the confusion, when running in the IDE, and depending on 
how one setup the IDE shortcut, loading libraries fail if it's in the 
project folder unless the shortcut working directory was set to the project 
folder, or the line "ChDir App.Path" is used, which sets VB6.EXE current 
directory to the project folder, so it's in the search path. The EXE in this 
case is VB6.EXE and the folder where the EXE was loaded from is the "VB98" 
folder. This makes it seems that the project folder is not searched, which 
is true unless one takes steps to make it the current folder.

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Thread

64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-15 16:25 -0700
  Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-15 20:34 -0500
    Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-16 08:49 -0700
      Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-16 12:33 -0500
  Re: 64 bit Windows install difficulty H-Man <Spam@bites.fs> - 2012-03-16 13:53 -0600
  Re: 64 bit Windows install difficulty "Farnsworth" <nospam@nospam.com> - 2012-03-16 21:56 -0500
    Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-18 06:23 -0700
      Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-18 15:51 +0000
        Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-18 11:07 -0700
          Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-18 13:38 -0500
          Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-18 20:41 +0000
            Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-18 14:06 -0700
              Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-18 22:43 +0000
            Re: 64 bit Windows install difficulty GS <gs@somewhere.net> - 2012-03-18 18:49 -0400
              Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-18 23:09 +0000
                Re: 64 bit Windows install difficulty GS <gs@somewhere.net> - 2012-03-18 19:15 -0400
                Re: 64 bit Windows install difficulty GS <gs@somewhere.net> - 2012-03-18 19:26 -0400
      Re: 64 bit Windows install difficulty "Farnsworth" <nospam@nospam.com> - 2012-03-18 11:54 -0500
        Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-18 11:47 -0700
          Re: 64 bit Windows install difficulty "Farnsworth" <nospam@nospam.com> - 2012-03-18 19:09 -0500
          Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-18 22:11 -0500
            Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 01:07 -0700
              Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-19 10:14 +0000
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 05:03 -0700
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-19 07:20 -0500
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-19 14:55 +0000
              Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-19 07:05 -0500
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 06:00 -0700
                Re: 64 bit Windows install difficulty "Mayayana" <mayayana@invalid.nospam> - 2012-03-19 09:31 -0500
                Re: 64 bit Windows install difficulty "Mayayana" <mayayana@invalid.nospam> - 2012-03-19 10:15 -0500
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 08:18 -0700
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-19 09:36 -0500
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 10:05 -0700
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-19 18:48 +0000
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-19 15:50 -0700
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-19 20:42 -0500
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-20 11:09 +0000
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-20 08:32 -0500
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-20 08:52 -0700
                Re: 64 bit Windows install difficulty "Farnsworth" <nospam@nospam.com> - 2012-03-20 15:34 -0500
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-20 16:07 -0500
                Re: 64 bit Windows install difficulty "Farnsworth" <nospam@nospam.com> - 2012-03-21 14:00 -0500
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-21 14:20 -0500
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-20 10:29 +0000
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-20 08:46 -0700
                Re: 64 bit Windows install difficulty ralph <nt_consulting64@yahoo.net> - 2012-03-19 20:12 -0500
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-21 01:29 -0700
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-21 09:57 +0000
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-21 04:57 -0700
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-21 13:14 +0000
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-21 15:29 +0000
                Re: 64 bit Windows install difficulty peter.lawton@blueyonder.co.uk - 2012-03-21 09:47 -0700
                Re: 64 bit Windows install difficulty "Mike Williams" <Mike@WhiskyAndCoke.com> - 2012-03-22 11:11 +0000
                Re: 64 bit Windows install difficulty chinamicah@gmail.com - 2012-04-15 16:12 -0700
                Re: 64 bit Windows install difficulty "Mayayana" <mayayana@invalid.nospam> - 2012-03-19 09:32 -0500

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