| On Windows 7, IDL 8.0 32-bit sees parallel universe Program Files directory? [message #71874] |
Tue, 27 July 2010 01:20  |
Dick Jackson
Messages: 347
Registered: August 1998
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Senior Member |
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Hi,
Well, this is an obscure one.
Using Windows Explorer, I made a Favorites item that points to my C:
\Program Files\ITT\IDL\IDL80\lib\itools\components directory, but in
IDL, when I use File:Open... and I click that Favorite, I get an error
message...
"Location is not available
C:\Program Files (x86)\ITT\IDL\IDL80\lib\itools\components refers to a
location that is unavailable. It could be..."
- Note the "(x86)" which was *not* in my original!
- Note that I have Windows 7 64-bit installed and IDL 64-bit
installed, but I am running IDL 32-bit here:
IDL> help,!version
** Structure !VERSION, 8 tags, length=76, data length=76:
ARCH STRING 'x86'
OS STRING 'Win32'
OS_FAMILY STRING 'Windows'
OS_NAME STRING 'Microsoft Windows'
RELEASE STRING '8.0'
BUILD_DATE STRING 'Jun 17 2010'
MEMORY_BITS INT 32
FILE_OFFSET_BITS
INT 64
But wait! This is just a prelude to the oddity that started my current
frustration. Here's what I did after installing IDL 8.0 Final (and I
can't say that I tried anything like this with any Tech Preview
version I had):
- using IDL 32-bit, I opened a file in C:\Program Files\ITT\IDL
\IDL80\lib\itools\components, made some changes, and saved it
- using IDL 32-bit's File: Open... command (or Emacs, another 32-bit
program) I see the modified file in the list correctly with new size
and date, and I always get that modified file when I open it.
- but, using Windows Explorer, and even IDL 64-bit's File: Open...
command (or Notepad), when I look at that directory, I see the
original, unmodified file size and date, and cannot get at the version
modified by IDL 32-bit!
- note: in the C:\Program Files (x86) directory (meant for 32-bit
programs), I don't even have an ITT directory, so there's not a second
version in there that I can see.
The behaviour of the Program Files (with or without x86) folders in
Windows 7 64-bit seems really odd, and this is one of its stranger
manifestations. I was originally suspecting my Windows hardware
(actually Parallels Desktop for Mac, which sides with Windows Explorer
in what it can see), but when I found that "Favorites" behaviour I
thought there's something funny within the Windows side.
I think I see now that I should use IDL 64-bit if I plan to edit any
of these files and expect them to be seen by any 64-bit programs, but
this is so strange, I thought I'd mention it. Can anyone else confirm
this behaviour on Windows 7?
BTW, here's what it looks like when running IDL's 64-bit IDLDE:
IDL> help,!version
** Structure !VERSION, 8 tags, length=104, data length=100:
ARCH STRING 'x86_64'
OS STRING 'Win32'
OS_FAMILY STRING 'Windows'
OS_NAME STRING 'Microsoft Windows'
RELEASE STRING '8.0'
BUILD_DATE STRING 'Jun 17 2010'
MEMORY_BITS INT 64
FILE_OFFSET_BITS
INT 64
Cheers,
-Dick
Dick Jackson Software Consulting
Victoria, BC, Canada --- +1-250-220-6117
dick@d-jackson.com --- http://www.d-jackson.com
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