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installer: fine-tuning

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don't bother the user with questions if the uninstaller was accidentally deleted
This commit is contained in:
Uwe Stöhr 2014-04-27 15:14:01 +02:00
parent dced492489
commit 4d4ba7b80c
1 changed files with 12 additions and 3 deletions
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15
development/Win32/packaging/installer/include/init.nsh
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@ -626,15 +626,24 @@ Function .onInit
# check if this LyX version is already installed
${if} $MultiUser.Privileges == "Admin"
${orif} $MultiUser.Privileges == "Power"
ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "Publisher"
ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "DisplayIcon"
${else}
ReadRegStr $0 HKCU "${APP_UNINST_KEY}" "Publisher"
ReadRegStr $0 HKCU "${APP_UNINST_KEY}" "DisplayIcon"
# handle also the case that LyX is already installed in HKLM
${if} $0 == ""
ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "Publisher"
ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "DisplayIcon"
${endif}
${endif}
${if} $0 != ""
# check if the uninstaller was acidentally deleted
# if so don't bother the user if he realy wants to install a new LyX over an existing one
# because he won't have a chance to deny this
StrCpy $4 $0 -10 # remove '\bin\lyx,0'
# (for FileCheck the variables $0 and $1 cannot be used)
!insertmacro FileCheck $5 "Uninstall-LyX.exe" "$4" # macro from LyXUtils.nsh
${if} $5 == "False"
Goto ForceInstallation
${endif}
# installing over an existing installation of the same LyX release is not necessary
# if the users does this he most probably has a problem with LyX that can better be solved
# by reinstalling LyX