jrolling
9th June 2006 15:57 UTC

A few registry questions
Hi,

I would like my end users to be able to install many instances of my application.

For example they might want to have the same application at 3 different locations.

1: C:\application1\app.exe
2: C:\application2\app.exe
3: C:\application3\app.exe

My problem is that application2 is writing over application1 in the registry and so forth. Also, the uninstaller is removing all sections from the registry, even if its not supposed to.

What is the best way to increment entries in the registry? Or increment uninstall entries in the registry? How do I approach finding out which entry is the correct one to remove during the uninstallation?

Thanks,

Anders
9th June 2006 16:03 UTC

you could keep a refrence count and only delete the entries if it is less than 1, or if they should not share settings, store with a hash of the path maybe (HKCU\Software\Company\Appname\%HASH%\)

fluidz91
21st June 2006 15:52 UTC

Hello,

I have the same need as jrolling but don't know how to do it even with Anders' response.
Installer name is the same (so registry markers are the same according to the wizard) but install directory is different and i have different installoptions parameters for each install.
When the uninstaller is launched is it possible to have a page that lists installed components to uninstall (checkboxes)?

jrolling
21st June 2006 16:01 UTC

You need to figure out a way to make the registry entries unique. One very simple thing to do is to have something

WriteRegStr HKLM "${REGKEY}\$INSTDIR\Components" Common 1

This way you know which entry to delete during uninstall and you can have. I would only recommend this for short time use until you come up with something better.

You can make a custom uninstall page and during the un.init you can read your registry entry to find out which components are installed for that particular installation. Take a look at custom pages if you haven't already.

fluidz91
22nd June 2006 10:40 UTC

I manage to have unique registry entries for installed components (ServiceName$nbpavi) and the number of installed components (InstalledPavi) by doing :

ReadRegStr $nbpavi HKLM "${REGKEY}\Components" "InstalledPavi"
    Strcmp $nbpavi "" NoPavi OneMorePavi
    NoPavi:
        StrCpy $nbpavi 1
        WriteRegStr HKLM "${REGKEY}\Components" "InstalledPavi" 1
        goto EndPavi
    OneMorePavi:
        IntOp $nbpavi $nbpavi + 1
        WriteRegStr HKLM "${REGKEY}\Components" "InstalledPavi" $nbpavi
    EndPavi:
    
    WriteRegStr HKLM "${REGKEY}\Components" "ServiceName$nbpavi" $0

!insertmacro MUI_UNPAGE_COMPONENTS

fluidz91
22nd June 2006 15:51 UTC

i changed some things :

i use

UninstPage custom un.CustomPageB

!insertmacro MUI_UNPAGE_COMPONENTS

!insertmacro MUI_INSTALLOPTIONS_EXTRACT "unsetup.ini"
ReadRegStr $nbpavi HKLM "${REGKEY}\Components" "InstalledPavi"
StrCpy $0 0
StrCpy $2 ""

Function un.CustomPageB
  loop:
    IntCmp $0 $nbpavi done_loop 0 done_loop
    IntOp $0 $0 + 1
    ReadRegStr $1 HKLM "${REGKEY}\Components" "ServiceName$0"
    Strcpy $2 "$2|$1"
  Goto loop
  done_loop:
  !insertmacro MUI_INSTALLOPTIONS_WRITE "unsetup_pavi.ini" "Field 1" "ListItems" "$2|Tous"
  !insertmacro MUI_HEADER_TEXT "$(TEXT_IO_TITLE)" "$(TEXT_IO_SUBTITLE)"
  !insertmacro MUI_INSTALLOPTIONS_DISPLAY "unsetup_pavi.ini"
FunctionEnd