1.4.3 - settings - integration - file association JFIF

[user0]

XnViewMP 1.4.3 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Settings - Integration
XnViewMP can read/write JFIF, but does not open it Viewer tab after association

To reproduce:

1. associate JFIF with XnViewMP (if it is not in the list - manually navigate to xnviewmp.exe)
   - Start > Settings > Apps > Default apps OR
   - win+r, run ms-settings:defaultapps
   association_jfif.png
2. double-click on image file in windows file explorer
   jfif.zip

Issue
XnViewMP opens:
- browser with last directory (default settings) OR
- empty tab - if untick 'Open browser at startup' in Settings


Registry

• CHECK
  Lets associate few apps and check what keys windows creates in registry:
  • XnViewMP

    Code: Select all

    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jfif\UserChoice]
    "ProgId"="Applications\\xnviewmp.exe"
    "Hash"="NnaYQb9xvlE="
    

  • ACDSee

    Code: Select all

    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jfif\UserChoice]
    "ProgId"="ACDSee Ultimate 2023.jfif"
    "Hash"="3X0UKoU+PV8="
    

  • IrfanView

    Code: Select all

    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jfif\UserChoice]
    "ProgId"="Applications\\i_view64.exe"
    "Hash"="yQZfQC1AkSM="
    

  • FastStone

    Code: Select all

    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jfif\UserChoice]
    "ProgId"="Applications\\FSViewer.exe"
    "Hash"="C50oD/i4bt4="
    

  • MS Photos

    Code: Select all

    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.jfif\UserChoice]
    "ProgId"="AppX43hnxtbyyps62jhe9sqpdzxn1790zetc"
    "Hash"="8hhFU2I6cJ4="
    

  ProgId references key in \Software\Classes\ either in HKCU or KHLM hives, eg:
  HKEY_CURRENT_USER\Software\Classes\Applications\xnviewmp.exe
  that does not exist in case of xnview for some reason

• FIX
  Few assumptions:
  - xnviewmp located at D:\PROG\portable\graphic\XnViewMP\xnviewmp.exe
  - use HKEY_CURRENT_USER reg hive
  - it may be required to restart explorer.exe or reassociate via win settings once reg keys are added
  
  Association can be done in several ways:
  • Approach A - Applications\xnviewmp.exe
    via single app reference (no custom icons/localized file descriptions) for all required formats
    
    • lets create it:

      Code: Select all

      [HKEY_CURRENT_USER\Software\Classes\Applications\xnviewmp.exe\shell\open\command]
      @="\"D:\\PROG\\portable\\graphic\\XnViewMP\\xnviewmp.exe\" \"%1\""

      HKCU_xnviewmp_jfif_Applications.zip
  
  
  • Approach B - XnViewMP.jfif
    via separate XnViewMP.xxx keys (with custom icons/localized file descriptions) for all required formats
    
    I assume XnViewMP creates these keys when "Set file associations..." pressed in Settings (require admin rights),
    unfortunately no XnViewMP.jfif key iscreated.
    
    • lets create it:

      Code: Select all

      [HKEY_CURRENT_USER\Software\Classes\XnViewMP.jfif]
      @="JFIF Bitmap file"
      
      [HKEY_CURRENT_USER\Software\Classes\XnViewMP.jfif\DefaultIcon]
      @="D:/PROG/portable/graphic/XnViewMP/FileIcons/jpg.ico"
      
      [HKEY_CURRENT_USER\Software\Classes\XnViewMP.jfif\shell]
      
      [HKEY_CURRENT_USER\Software\Classes\XnViewMP.jfif\shell\open]
      
      [HKEY_CURRENT_USER\Software\Classes\XnViewMP.jfif\shell\open\command]
      @="\"D:\\PROG\\portable\\graphic\\XnViewMP\\xnviewmp.exe\" \"%1\""
      

      Note: file will have .jpg icon as there is no .jfif icon in xnview directory
    • also lets create reference to this new key in:

      Code: Select all

      [HKEY_CURRENT_USER\Software\Classes\.jfif\OpenWithProgids]
      "XnViewMP.jfif"=hex(0):

      HKCU_xnviewmp_jfif_XnViewMP.jfif.zip
    ProgId in ..Explorer\FileExts\.jfif\UserChoice will change to XnViewMP.jfif as well, automatically or after manuall reassociation (too lazy to check it).
  Now JFIF opens as expected.

Not sure who is not messing with registry enough (windows or xnview), but all other apps mentioned here have no association issues

ps. some stuff from 2014
How to change default mode to open to view, not browser

pps. how to set assosiation via SetUserFTA

[xnview]

i don't know why Windows doesn't add correct keys in registry...

[FKCapitalism2]

With portable version of XnViewMP i did not even have key "HKEY_CURRENT_USER\SOFTWARE\Classes\Applications\xnviewmp.exe". Solution "A" fixed my problem described here.