Preview Pane text based file

  1. Posts : 2
    Windows 10 Pro
       02 Mar 2017 #1

    Preview Pane text based file

    I use a program for work, and it saves files with an extension .blt
    Those files can also be opened fine in notepad, and are 100% text based.

    In every PC since windows 7 I have always managed to use PreviewConfig.exe to set the extension viewable in the preview pane. I have had two previous PC's running 10, and have been able to get this working without much trouble.

    No matter what I try, I simply can not see my files contents in the window preview pane.
    Any suggestions?
      My ComputerSystem Spec

  2. Caledon Ken's Avatar
    Posts : 11,119
    Windows 10 Pro x64 Build 1803
       02 Mar 2017 #2

    Welcome to the TenForums @Hoops

    Have you tried installing program, PreviewConfig.exe, in compatibility mode?

    When you try a file is anything recorded in the event viewer?

      My ComputerSystem Spec

  3.    03 Mar 2017 #3

    Hi, at a guess, this is related to the perceived type of the extension.

    Using a free utility, you can see .txt has a perceived type of text - or in Advanced Query Syntax kind:text (which you can use e.g. in complex explorer searches)

    Click image for larger version. 

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    You can see this utility lets you change the perceived type - which of course you could also do with a registry editor.

    You can use this to inspect the perceived type of the extension in question - and change it.

    There's another factor too - which program is associated with an extension type.
    For example, .ini is associated with Notepad, but its perceived type was 'unknown'. Its content is displayed in the preview pane (presumably because of Notepad).

    .ahk (autohotkey) files are text files, but were not displayed in the preview pane. They were not associated with a program that displayed them, and their perceived type was unknown. Changing this to text meant they are now displayed in the preview pane.
      My ComputerSystem Spec

  4. Posts : 2
    Windows 10 Pro
    Thread Starter
       04 Mar 2017 #4

    Ken, Yes I tried using PreviewConfig as mentioned in my post. No luck.

    Dalchina, The perceived type in HKEY_CLASSES_ROOT .blt PercievedType is text.

    Additionally, the default is set to MYPROG and the correct info is in..

    which is the default handler for text files.

    Like I said, I have tried everything I could think of...

    [Edit... Think I stumped the Gurus ;( ]
    Last edited by Hoops; 09 Mar 2017 at 13:24.
      My ComputerSystem Spec


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