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Windows Codeblocks uninstall - Associations left over after uninstall

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AndrewCot:
On Windows when you uninstall Code::Blocks via the Windows uninstall process there are file associations left in the registry due to the code in the src\associations.cpp (Associations::DoSetAssociation function)  that are not removed on an uninstall... This is not very good IMHO.

You can use the following process to see the registry entries that have NOT been removed, assuming you have ccleaner (ccleaner slim is my preferred version)
1) Run ccleaner and clean the registry until no more registry entries can be cleaned.
2) Uninstall Code::Blocks
3) Rename/backup the Code::Blocks APPDATA directory (%APPDATA%\CodeBlocks)
4) Delete the Code::Blocks APPDATA directory (rmdir /q /s %APPDATA%\CodeBlocks)
5) Install Code::Blocks "codeblocks-20.03-setup.exe"
6) Run Code::Blocks and associate C/C++ to C::B
7) Exit Code::Blocks
5) Uninstall Code::Blocks
6) Run ccleaner and scan for registry entry issues. You should see a bunch of entries left over from C::B:

Should the NSIS script detect these registry entries and remove them or is there a better way of doing this?

oBFusCATed:

--- Quote from: AndrewCot on July 24, 2021, 12:09:19 pm ---Should the NSIS script detect these registry entries and remove them or is there a better way of doing this?

--- End quote ---
Windows is multiuser system. How are we supposed to do this in this environment?

AndrewCot:

--- Quote ---Windows is multiuser system. How are we supposed to do this in this environment?
--- End quote ---

If I knew this then I would not have asked.

cacb:
If the installer establishes the associations, instead of Code::Blocks itself (or maybe in addition to), then an uninstall will remove and tidy up the associations.

AndrewCot:
The NSIS script below removes some HKCU\SOFTWARE\Classes sub entries, but not the entries listed below,

Not Removed Associations:
   HKCU\SOFTWARE\Classes\.cbp
   HKCU\SOFTWARE\Classes\.cc
   HKCU\SOFTWARE\Classes\.tcc
   HKCU\SOFTWARE\Classes\.workspace
   HKCU\SOFTWARE\Classes\CodeBlocks.cpp
   HKCU\SOFTWARE\Classes\CodeBlocks.hpp
   HKCU\SOFTWARE\Classes\CodeBlocks.tpp

NSIS Script snippet that includes NSIS special build logging:

--- Code: ---    # Start Unregister CodeBlocks associated files - see FileAssocation.cpp
    # or check out the registry "Computer\HKEY_CURRENT_USER\SOFTWARE\Classes\CodeBlocks.*" entries.
   
    ${If} ${RunningX64}
        LogText "SetRegView 64"
        SetRegView 64
        StrCpy $0 0 ; Registry key index
        ; Length of "CodeBlocks" = 10
        enumunkey64:
            EnumRegKey $1 HKCU "SOFTWARE\Classes" $0
            ;LogText "Read HKCU\SOFTWARE\Classes\$1"
            IntOp $0 $0 + 1
            StrCmp $1 "" done64
            StrCpy $2 $1 10  0
            ; LogText "Read 0 = $0 , 1 = $1 , 2 = $2"
            StrCmp $2 "CodeBlocks" 0 enumunkey64
            StrLen $3 $1
            IntOp $3 $3 - 10    ; Includes .
            StrCpy $4 $1 $3 10  ; Includes .
            LogText "L2755 1 = $1 , 2 = $2 , 3 = $3 , 4 = $4"
            StrCmp $4 "" enumunkey64
            ReadRegStr $5 HKCU "SOFTWARE\Classes\$4" ""
            LogText "L2758 1 = $1 , 2 = $2 , 5 = $5"
            StrCmp $5 $1 0 DelCodeBlocksEntry64   ; If no file extension classes found then goto DelCodeBlocksEntry
            StrCmp $5 $2 0 DelCodeBlocksEntry64   ; If file extension classes is not for codeblocks entry goto DelCodeBlocksEntry
            LogText "TBA L2761 Found : 'SOFTWARE\Classes\$1'"
            LogText "ReadRegStr 'SOFTWARE\Classes\$4' returned $5"

            LogText "DeleteRegValue HKCU 'SOFTWARE\Classes\$4' ''"
            DeleteRegValue HKCU "SOFTWARE\Classes\$4" ""    ; Delete default as it is codeblocks
            LogText "DeleteRegKey /IfEmpty HKCU 'SOFTWARE\Classes\$4'"
            DeleteRegKey /IfEmpty HKCU "SOFTWARE\Classes\$4"
        DelCodeBlocksEntry64:
            DeleteRegKey HKCU "SOFTWARE\Classes\$1"
            Goto enumunkey64

        done64:   
        # Finish Unregister CodeBlocks associated files - see FileAssocation.cpp
        SetRegView 32
        LogText "SetRegView 32"
    ${EndIf}
       
    StrCpy $0 0 ; Registry key index
    ; Length of "CodeBlocks" = 10
    enumunkey:
        EnumRegKey $1 HKCU "SOFTWARE\Classes" $0
        ;LogText "Read HKCU\SOFTWARE\Classes\$1"
        IntOp $0 $0 + 1
        StrCmp $1 "" done
        StrCpy $2 $1 10  0
        ;LogText "Read 0 = $0 , 1 = $1 , 2 = $2"
        StrCmp $2 "CodeBlocks" 0 enumunkey
        StrLen $3 $1
        IntOp $3 $3 - 10    ; Includes .
        StrCpy $4 $1 $3 10  ; Includes .
        LogText "L2791 1 = $1 , 2 = $2 , 3 = $3 , 4 = $4"
        StrCmp $4 "" enumunkey
        ReadRegStr $5 HKCU "SOFTWARE\Classes\$4" ""
        LogText "L2794 1 = $1 , 2 = $2 , 5 = $5"
        StrCmp $5 $1 0 DelCodeBlocksEntry   ; If no file extension classes found then goto DelCodeBlocksEntry
        StrCmp $5 $2 0 DelCodeBlocksEntry   ; If file extension classes is not for codeblocks entry goto DelCodeBlocksEntry
        LogText "TBA L2797 Found : 'SOFTWARE\Classes\$1'"
        LogText "ReadRegStr 'SOFTWARE\Classes\$4' returned $5"

        LogText "DeleteRegValue HKCU 'SOFTWARE\Classes\$4' ''"
        DeleteRegValue HKCU "SOFTWARE\Classes\$4" ""    ; Delete default as it is codeblocks
        LogText "DeleteRegKey HKCU 'SOFTWARE\Classes\$4'"
        DeleteRegKey HKCU "SOFTWARE\Classes\$4"
    DelCodeBlocksEntry:
        DeleteRegKey HKCU "SOFTWARE\Classes\$1"
        Goto enumunkey


--- End code ---

I have used the MS Process Monitor to see if there is any differences between the HKCU\SOFTWARE\Classes\CodeBlocks.tpp and HKCU\SOFTWARE\Classes\CodeBlocks.cbp access when running Code::Block for the first time when I associate CB with the C/C++ files and I could not see any differences, but I must have missed something as the CodeBlocks.cbp  is removed and the CodeBlocks.tpp is not....

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