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Opening local htm with variable

Posted on 2014-01-30
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Last Modified: 2014-07-07
I want an app to open a local htm help file ... no local web server.

This URL works in Firefox and IE (if 127.0.0.1 added to trusted sites):
\\127.0.0.1\c$\ProgramData\Folder\Default.htm

It looks fine in IE. In Firefox, ir becomes:
file://///127.0.0.1/c$/ProgramData/Folder/Default.htm
But still works

But I'd like to use a variable like %ProgramData% or %AllUsersProfile% so that it works in XP  as well.

However, I don't seem to be able to get the right format ... is it possible?
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Question by:Mike Lazarus
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Expert Comment

by:Gary
ID: 39821598
That won't work in Firefox, IE is written to act like Explorer so it will work but FF is not.
For IE
%ProgramData%\file.htm
will work
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Expert Comment

by:zc2
ID: 39821613
I would recommend to implement your own very simple web server in your application and open the help pages using it as the source, like
http://localhost:54321/pagename.htm
54321 - the port your simple web server listens. Could be any number greater than 1000
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Author Comment

by:Mike Lazarus
ID: 39821638
Actually, that won't work for me in IE either ...
I need to have the domain as Compatibility and Trusted Sites ... can't do that with the way you have.

That's why I have the \\127.0.0.1\ above :-)
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Author Comment

by:Mike Lazarus
ID: 39821645
Web server won't work ... the file is in a folder off %ProgramData% - part of another app.
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Expert Comment

by:Gary
ID: 39821648
You cannot mix the two - one is a file system browsing (%ProgramData%) and one is webserver system (127.0.0.1 - which only has access to the server root folder and sub folders)
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Author Comment

by:Mike Lazarus
ID: 39821654
It's sort of what I'd guessed.

There's no other option to look at that might be simple?
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Accepted Solution

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Gary earned 500 total points
ID: 39821667
No, to have access to the local file system you have to use the folder structure of the computer or if in IE using the system environment variables.
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Author Comment

by:Mike Lazarus
ID: 39821876
Just found this ... I might have a play next week:
https://developer.mozilla.org/en-US/docs/MCD,_Mission_Control_Desktop_AKA_AutoConfig

Also not sure what info PR_GetEnv might pass
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Expert Comment

by:Gary
ID: 39821892
How do you think that will solve your question?
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Author Comment

by:Mike Lazarus
ID: 39854195
I haven't had the time yet ... but hoping I can read and use the env vars as per:
https://developer.mozilla.org/en-US/docs/MCD,_Mission_Control_Desktop_AKA_AutoConfig#Windows_Particularities
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