]> git.lyx.org Git - features.git/blobdiff - development/Win32/packaging/installer/include/init.nsh
Win installer: updates and fixes
[features.git] / development / Win32 / packaging / installer / include / init.nsh
index 36421df6d1aad40b73f813373a2c8b9aa63668a7..59370d49b4a3b1ccd1d92235009ee6ef43df70e6 100644 (file)
@@ -1,77 +1,20 @@
-/*
-
+/*
 init.nsh
 
-Initialization function
-
+Initialization functions
 */
 
-#--------------------------------
-# Installer initialization
-
-!macro PRINTER_INIT
-
-  ${If} ${AtLeastWinVista}
-    StrCpy $PrinterConf "printui.exe"
-  ${Else}
-    StrCpy $PrinterConf "rundll32.exe printui.dll,PrintUIEntry"
-  ${EndIf}
-
-!macroend
-
-Function .onInit
-
-  ${IfNot} ${IsNT}
-  ${OrIfNot} ${AtLeastWin2000}
-    MessageBox MB_OK|MB_ICONSTOP "${APP_NAME} ${APP_VERSION} requires Windows 2000 or later."
-    Quit
-  ${EndIf}
-
-  !insertmacro PRINTER_INIT
-  !insertmacro MULTIUSER_INIT
-  ${IfNot} ${Silent}
-  
-    !ifndef BUNDLE_IMAGEMAGICK & BUNDLE_GHOSTSCRIPT
-    # Warn the user when no Administrator or Power user privileges are available
-    # These privileges are required to install ImageMagick or Ghostscript
-    ${If} $MultiUser.Privileges != "Admin"
-    ${AndIf} $MultiUser.Privileges != "Power"
-      MessageBox MB_OK|MB_ICONEXCLAMATION $(TEXT_NO_PRIVILEDGES)
-    ${EndIf}
-    !endif
-    
-    # Show banner while installer is intializating 
-    Banner::show /NOUNLOAD "Checking system"
-  ${EndIf}
-  Call SearchExternal
-  Call InitExternal
-
-  ${IfNot} ${Silent}
-    Banner::destroy
-  ${EndIf}
-
-FunctionEnd
-
-Function un.onInit
-
-  !insertmacro PRINTER_INIT
-  !insertmacro MULTIUSER_UNINIT
-
-FunctionEnd
-
 #--------------------------------
 # User initialization
 
 Var ComponentPath
 Var LyXLangName
 
-# COMPONENT can be LaTeX ImageMagick and Ghostscript
+# COMPONENT can be LaTeX, ImageMagick and Ghostscript
 !macro EXTERNAL_INIT COMPONENT
 
   # APP_REGKEY_SETUP = "Software\${APP_NAME}${APP_SERIES_KEY}\Setup"
-  # where ${APP_NAME}${APP_SERIES_KEY} is something like LyX16
+  # where ${APP_NAME}${APP_SERIES_KEY} is something like LyX22
   ReadRegStr $ComponentPath SHELL_CONTEXT "${APP_REGKEY_SETUP}" "${COMPONENT} Path"
   
   # BIN_LATEX etc are defined in settings.nsh
@@ -97,3 +40,1431 @@ Function InitUser
   ${EndIf}
   
 FunctionEnd
+
+#--------------------------------
+# visible installer sections
+
+Section "$(SecFileAssocTitle)" SecFileAssoc
+ StrCpy $CreateFileAssociations "true" 
+SectionEnd
+
+Section "$(SecDesktopTitle)" SecDesktop
+ StrCpy $CreateDesktopIcon "true"
+SectionEnd
+
+# Expand the list of dictionaries by default as this was requested by several
+# users. For the thesaurus this is was not requested because this section
+# is by default empty.
+SectionGroup /e "$(SecDictionaries)" SecDictionaries
+
+Section /o "Afrikaans" SecDAfrikaans
+ StrCpy $DictCodes "af_ZA,$DictCodes"
+ AddSize 1440
+SectionEnd
+
+Section /o "العربية" SecDArabic
+ StrCpy $DictCodes "ar_SA,$DictCodes"
+ AddSize 7304
+SectionEnd
+
+Section /o "հայերեն" SecDArmenian
+ StrCpy $DictCodes "hy_AM,$DictCodes"
+ AddSize 2000
+SectionEnd
+
+Section /o "Bahasa Indonesia" SecDIndonesian
+ StrCpy $DictCodes "id_ID,$DictCodes"
+ AddSize 217
+SectionEnd
+
+Section /o "Bahasa Melayu" SecDMalayan
+ StrCpy $DictCodes "ms_MY,$DictCodes"
+ AddSize 227
+SectionEnd
+
+Section /o "беларускі" SecDBelarusian 
+ StrCpy $DictCodes "be_BY,$DictCodes"
+ AddSize 1730
+SectionEnd
+
+Section /o "Brezhoneg" SecDBreton 
+ StrCpy $DictCodes "br_FR,$DictCodes"
+ AddSize 5556
+SectionEnd
+
+Section /o "български" SecDBulgarian
+ StrCpy $DictCodes "bg_BG,$DictCodes"
+ AddSize 985
+SectionEnd
+
+Section /o "Català" SecDCatalanian
+ StrCpy $DictCodes "ca_ES,$DictCodes"
+ AddSize 1210
+SectionEnd
+
+Section /o "Ceština" SecDCzech
+ StrCpy $DictCodes "cs_CZ,$DictCodes"
+ AddSize 2190
+SectionEnd
+
+Section /o "Coptic" SecDCoptic
+ StrCpy $DictCodes "cop_EG,$DictCodes"
+ AddSize 151
+SectionEnd
+
+Section /o "Cymraeg" SecDWelsh 
+ StrCpy $DictCodes "cy_GB,$DictCodes"
+ AddSize 1540
+SectionEnd
+
+Section /o "Dansk" SecDDanish
+ StrCpy $DictCodes "da_DK,$DictCodes"
+ AddSize 2470
+SectionEnd
+
+Section /o "Deutsch (A)" SecDGermanAT
+ StrCpy $DictCodes "de_AT,$DictCodes"
+ AddSize 3620
+SectionEnd
+
+Section /o "Deutsch (CH)" SecDGermanCH
+ StrCpy $DictCodes "de_CH,$DictCodes"
+ AddSize 3620
+SectionEnd
+
+Section "Deutsch (D)" SecDGermanD
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "de_DE,$DictCodes"
+ AddSize 3620
+SectionEnd
+
+Section /o "Ελληνικά" SecDGreek
+ StrCpy $DictCodes "el_GR,$DictCodes"
+ AddSize 6550
+SectionEnd
+
+Section /o "Eesti" SecDEstonian
+ StrCpy $DictCodes "et_EE,$DictCodes"
+ AddSize 4400
+SectionEnd
+
+Section /o "English (AU)" SecDEnglishAU
+ StrCpy $DictCodes "en_AU,$DictCodes"
+ AddSize 557
+SectionEnd
+
+Section /o "English (CA)" SecDEnglishCA
+ StrCpy $DictCodes "en_CA,$DictCodes"
+ AddSize 557
+SectionEnd
+
+Section "English (GB)" SecDEnglishGB
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "en_GB,$DictCodes"
+ AddSize 1044
+SectionEnd
+
+Section /o "English (NZ)" SecDEnglishNZ
+ StrCpy $DictCodes "en_NZ,$DictCodes"
+ AddSize 551
+SectionEnd
+
+Section "English (US)" SecDEnglishUS
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "en_US,$DictCodes"
+ AddSize 551
+SectionEnd
+
+Section "Español (ES)" SecDSpanishES
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "es_ES,$DictCodes"
+ AddSize 974
+SectionEnd
+
+Section "Español (MX)" SecDSpanishMX
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "es_MX,$DictCodes"
+ AddSize 924
+SectionEnd
+
+Section /o "Esperanto" SecDEsperanto
+ StrCpy $DictCodes "eo_EO,$DictCodes"
+ AddSize 389
+SectionEnd
+
+Section /o "Euskara" SecDBasque
+ StrCpy $DictCodes "eu_ES,$DictCodes"
+ AddSize 4850
+SectionEnd
+
+Section /o "فارسی" SecDFarsi
+ StrCpy $DictCodes "fa_IR,$DictCodes"
+ AddSize 6710
+SectionEnd
+
+Section "Français" SecDFrench
+ # already installed by default
+ SectionIn RO
+ #StrCpy $DictCodes "fr_FR,$DictCodes"
+ AddSize 1200
+SectionEnd
+
+Section /o "Français (Canada)" SecDFrenchCanada
+ StrCpy $DictCodes "fr_CA,$DictCodes"
+ AddSize 1390
+SectionEnd
+
+Section /o "Gaeilge" SecDGaelic
+ StrCpy $DictCodes "ga_IR,$DictCodes"
+ AddSize 1090
+SectionEnd
+
+Section /o "Gàidhlig" SecDScottish
+ StrCpy $DictCodes "gd_GB,$DictCodes"
+ AddSize 4161
+SectionEnd
+
+Section /o "Galego" SecDGalician
+ StrCpy $DictCodes "gl_ES,$DictCodes"
+ AddSize 3911
+SectionEnd
+
+Section /o "ქართული ენა" SecDGeorgian
+ StrCpy $DictCodes "ka_GE,$DictCodes"
+ AddSize 3952
+SectionEnd
+
+Section /o "עִברִית" SecDHebrew
+ StrCpy $DictCodes "he_IL,$DictCodes"
+ AddSize 3120
+SectionEnd
+
+Section /o "Hrvatski" SecDCroatian
+ StrCpy $DictCodes "hr_HR,$DictCodes"
+ AddSize 2240
+SectionEnd
+
+Section /o "Magyar" SecDHungarian
+ StrCpy $DictCodes "hu_HU,$DictCodes"
+ AddSize 3380
+SectionEnd
+
+Section /o "हिंदी" SecDHindi
+ StrCpy $DictCodes "hi_IN,$DictCodes"
+ AddSize 1900
+SectionEnd
+
+Section /o "Interlingua" SecDInterlingua
+ StrCpy $DictCodes "ia_IA,$DictCodes"
+ AddSize 613
+SectionEnd
+
+Section /o "Íslenska" SecDIcelandic
+ StrCpy $DictCodes "is_IS,$DictCodes"
+ AddSize 2320
+SectionEnd
+
+Section /o "Italiano" SecDItalian
+ StrCpy $DictCodes "it_IT,$DictCodes"
+ AddSize 1380
+SectionEnd
+
+Section /o "Қазақша" SecDKazakh
+ StrCpy $DictCodes "kk_KZ,$DictCodes"
+ AddSize 2120
+SectionEnd
+
+Section /o "한국어" SecDKorean
+ StrCpy $DictCodes "ko_KR,$DictCodes"
+ AddSize 16540
+SectionEnd
+
+Section /o "Latina" SecDLatin
+ StrCpy $DictCodes "la_LA,$DictCodes"
+ AddSize 2040
+SectionEnd
+
+Section /o "Lietuviu" SecDLithuanian
+ StrCpy $DictCodes "lt_LT,$DictCodes"
+ AddSize 1320
+SectionEnd
+
+Section /o "Latviešu" SecDLatvian
+ StrCpy $DictCodes "lv_LV,$DictCodes"
+ AddSize 2243
+SectionEnd
+
+Section /o "मराठी" SecDMarathi
+ StrCpy $DictCodes "mr_IN,$DictCodes"
+ AddSize 5290
+SectionEnd
+
+Section /o "Nederlands" SecDDutch
+ StrCpy $DictCodes "nl_NL,$DictCodes"
+ AddSize 1820
+SectionEnd
+
+Section /o "Norsk (Bokmål)" SecDNorwegianNB
+ StrCpy $DictCodes "nb_NO,$DictCodes"
+ AddSize 5291
+SectionEnd
+
+Section /o "Norsk (Nynorsk)" SecDNorwegianNN
+ StrCpy $DictCodes "nn_NO,$DictCodes"
+ AddSize 3292
+SectionEnd
+
+Section /o "Occitan" SecDOccitan
+ StrCpy $DictCodes "oc_FR,$DictCodes"
+ AddSize 31710
+SectionEnd
+
+Section /o "Polski" SecDPolish
+ StrCpy $DictCodes "pl_PL,$DictCodes"
+ AddSize 4540
+SectionEnd
+
+Section /o "Português (BR)" SecDPortugueseBR
+ StrCpy $DictCodes "pt_BR,$DictCodes"
+ AddSize 5280
+SectionEnd
+
+Section /o "Português (PT)" SecDPortuguesePT
+ StrCpy $DictCodes "pt_PT,$DictCodes"
+ AddSize 1568
+SectionEnd
+
+Section /o "Româna" SecDRomanian
+ StrCpy $DictCodes "ro_RO,$DictCodes"
+ AddSize 2255
+SectionEnd
+
+Section /o "Русский" SecDRussian
+ StrCpy $DictCodes "ru_RU,$DictCodes"
+ AddSize 1920
+SectionEnd
+
+Section /o "Serbšcina (Dolno)" SecDSorbianD
+ StrCpy $DictCodes "dsb_DE,$DictCodes"
+ AddSize 1035
+SectionEnd
+
+Section /o "Serbšcina (Horno)" SecDSorbianH
+ StrCpy $DictCodes "hsb_DE,$DictCodes"
+ AddSize 740
+SectionEnd
+
+Section /o "Shqip" SecDAlbanian
+ StrCpy $DictCodes "sq_AL,$DictCodes"
+ AddSize 2612
+SectionEnd
+
+Section /o "Slovenšcina" SecDSlovenian
+ StrCpy $DictCodes "sl_SI,$DictCodes"
+ AddSize 2910
+SectionEnd
+
+Section /o "Slovenský" SecDSlovakian
+ StrCpy $DictCodes "sk_SK,$DictCodes"
+ AddSize 3310
+SectionEnd
+
+Section /o "Српски (Ћирилица)" SecDSerbianC
+ StrCpy $DictCodes "sr_RS,$DictCodes"
+ AddSize 4401
+SectionEnd
+
+Section /o "Srpski (Latinica)" SecDSerbianL
+ StrCpy $DictCodes "sr_RS-Latin,$DictCodes"
+ AddSize 2843
+SectionEnd
+
+Section /o "Svenska" SecDSwedish
+ StrCpy $DictCodes "sv_SE,$DictCodes"
+ AddSize 2028
+SectionEnd
+
+Section /o "தமிழ்" SecDTamil
+ StrCpy $DictCodes "ta_IN,$DictCodes"
+ AddSize 5911
+SectionEnd
+
+Section /o "తెలుగు" SecDTelugu
+ StrCpy $DictCodes "te_IN,$DictCodes"
+ AddSize 3400
+SectionEnd
+Section /o "ไทย" SecDThai
+ StrCpy $DictCodes "th_TH,$DictCodes"
+ AddSize 351
+SectionEnd
+
+Section /o "Tibetan" SecDTibetan
+ StrCpy $DictCodes "bo_CN,$DictCodes"
+ AddSize 7
+SectionEnd
+
+Section /o "Türkmençe" SecDTurkmen
+ StrCpy $DictCodes "tk_TM,$DictCodes"
+ AddSize 2797
+SectionEnd
+
+Section /o "Türkçe" SecDTurkish
+ StrCpy $DictCodes "tr_TR,$DictCodes"
+ AddSize 8870
+SectionEnd
+
+Section /o "Українська" SecDUkrainian
+ StrCpy $DictCodes "uk_UA,$DictCodes"
+ AddSize 6905
+SectionEnd
+
+Section /o "اردو" SecDUrdu
+ StrCpy $DictCodes "ur_PK,$DictCodes"
+ AddSize 1401
+SectionEnd
+
+Section /o "Tiếng Việt" SecDVietnamese
+ StrCpy $DictCodes "vi_VN,$DictCodes"
+ AddSize 40
+SectionEnd
+
+SectionGroupEnd
+
+
+SectionGroup "$(SecThesaurus)" SecThesaurus
+
+Section /o "العربية" SecTArabic
+ StrCpy $ThesCodes "ar_SA,$ThesCodes"
+ AddSize 799
+SectionEnd
+
+Section /o "български" SecTBulgarian
+ StrCpy $ThesCodes "bg_BG,$ThesCodes"
+ AddSize 3020
+SectionEnd
+
+Section /o "Català" SecTCatalan
+ StrCpy $ThesCodes "ca_ES,$ThesCodes"
+ AddSize 731
+SectionEnd
+
+Section /o "Ceština" SecTCzech
+ StrCpy $ThesCodes "cs_CZ,$ThesCodes"
+ AddSize 635
+SectionEnd
+
+Section /o "Dansk" SecTDanish
+ StrCpy $ThesCodes "da_DK,$ThesCodes"
+ AddSize 2360
+SectionEnd
+
+Section /o "Deutsch (D/A)" SecTGermanDA
+ StrCpy $ThesCodes "de_DE,$ThesCodes"
+ AddSize 14600
+SectionEnd
+
+Section /o "Deutsch (CH)" SecTGermanCH
+ StrCpy $ThesCodes "de_CH,$ThesCodes"
+ AddSize 14600
+SectionEnd
+
+Section /o "English (AU)" SecTEnglishAU
+ StrCpy $ThesCodes "en_AU,$ThesCodes"
+ AddSize 21642
+SectionEnd
+
+Section /o "English (GB)" SecTEnglishGB
+ StrCpy $ThesCodes "en_GB,$ThesCodes"
+ AddSize 14300
+SectionEnd
+
+Section /o "English (US)" SecTEnglishUS
+ StrCpy $ThesCodes "en_US,$ThesCodes"
+ AddSize 22095
+SectionEnd
+
+Section /o "Español" SecTSpanish
+ StrCpy $ThesCodes "es_ES,$ThesCodes"
+ AddSize 2860
+SectionEnd
+
+Section /o "Français" SecTFrench
+ StrCpy $ThesCodes "fr_FR,$ThesCodes"
+ AddSize 5060
+SectionEnd
+
+Section /o "Gaeilge" SecTGaelic
+ StrCpy $ThesCodes "ga_IR,$ThesCodes"
+ AddSize 30600
+SectionEnd
+
+Section /o "Galego" SecTGalician
+ StrCpy $ThesCodes "gl_ES,$ThesCodes"
+ AddSize 510
+SectionEnd
+
+Section /o "Ελληνικά" SecTGreek
+ StrCpy $ThesCodes "el_GR,$ThesCodes"
+ AddSize 903
+SectionEnd
+
+Section /o "Íslenska" SecTIcelandic
+ StrCpy $ThesCodes "is_IS,$ThesCodes"
+ AddSize 63
+SectionEnd
+
+Section /o "Italiano" SecTItalian
+ StrCpy $ThesCodes "it_IT,$ThesCodes"
+ AddSize 2520
+SectionEnd
+
+Section /o "Magyar" SecTHungarian
+ StrCpy $ThesCodes "hu_HU,$ThesCodes"
+ AddSize 632
+SectionEnd
+
+Section /o "Norsk (Bokmål)" SecTNorwegianNB
+ StrCpy $ThesCodes "nb_NO,$ThesCodes"
+ AddSize 2595
+SectionEnd
+
+Section /o "Norsk (Nynorsk)" SecTNorwegianNN
+ StrCpy $ThesCodes "nn_NO,$ThesCodes"
+ AddSize 2
+SectionEnd
+
+Section /o "Polski" SecTPolish
+ StrCpy $ThesCodes "pl_PL,$ThesCodes"
+ AddSize 5580
+SectionEnd
+
+Section /o "Português" SecTPortuguese
+ StrCpy $ThesCodes "pt_PT,$ThesCodes"
+ AddSize 3950
+SectionEnd
+
+Section /o "Româna" SecTRomanian
+ StrCpy $ThesCodes "ro_RO,$ThesCodes"
+ AddSize 3650
+SectionEnd
+
+Section /o "Русский" SecTRussian
+ StrCpy $ThesCodes "ru_RU,$ThesCodes"
+ AddSize 2080
+SectionEnd
+
+Section /o "Slovenšcina" SecTSlovenian
+ StrCpy $ThesCodes "sl_SI,$ThesCodes"
+ AddSize 1110
+SectionEnd
+
+Section /o "Slovenský" SecTSlovakian
+ StrCpy $ThesCodes "sk_SK,$ThesCodes"
+ AddSize 930
+SectionEnd
+
+Section /o "Svenska" SecTSwedish
+ StrCpy $ThesCodes "sv_SE,$ThesCodes"
+ AddSize 720
+SectionEnd
+
+Section /o "Українська" SecTUkrainian
+ StrCpy $ThesCodes "uk_UA,$ThesCodes"
+ AddSize 1339
+SectionEnd
+
+SectionGroupEnd
+
+# Section descriptions
+!insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
+!insertmacro MUI_DESCRIPTION_TEXT ${SecFileAssoc} "$(SecFileAssocDescription)"
+!insertmacro MUI_DESCRIPTION_TEXT ${SecDesktop} "$(SecDesktopDescription)"
+!insertmacro MUI_DESCRIPTION_TEXT ${SecDictionaries} "$(SecDictionariesDescription)"
+!insertmacro MUI_DESCRIPTION_TEXT ${SecThesaurus} "$(SecThesaurusDescription)"
+!insertmacro MUI_FUNCTION_DESCRIPTION_END
+
+
+# .onInit must be here after the section definition because we have to set
+# the selection states of the dictionary sections
+Function .onInit
+
+  ReadRegStr $R0 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion" CurrentVersion
+  ${if} $R0 == "5.0" # 2000
+  ${orif} $R0 == "5.1" # XP
+  ${orif} $R0 == "5.2" # 2003
+  ${orif} $R0 == "6.0" # Vista
+    MessageBox MB_OK|MB_ICONSTOP "${APP_NAME} ${APP_VERSION} requires Windows 7 or newer." /SD IDOK
+    Quit
+  ${endif}
+  
+  # Check that LyX is not currently running
+  FindProcDLL::FindProc "${BIN_LYX}"
+  ${if} $R0 == "1"
+   MessageBox MB_OK|MB_ICONSTOP "$(UnInstallRunning)" /SD IDOK
+   Abort
+  ${endif}
+  
+  # read the user and computer name
+  ReadRegStr $ComputerName HKLM "System\CurrentControlSet\Control\ComputerName\ActiveComputerName" "ComputerName"
+  System::Call "advapi32::GetUserName(t .r0, *i ${NSIS_MAX_STRLEN} r1) i.r2"
+  StrCpy $UserName $0
+  
+  !insertmacro MULTIUSER_INIT
+  
+  # check if this LyX version is already installed
+  ${if} $MultiUser.Privileges == "Admin"
+  ${orif} $MultiUser.Privileges == "Power"
+   ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "DisplayIcon"
+  ${else}
+   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}" "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 $5 "Uninstall-${APP_NAME}.exe" "$4" # macro from LyXUtils.nsh
+   ${if} $5 == "False"
+    Goto ForceInstallation
+   ${endif}
+   # installing over an existing installation of the same LyX release is not necessary
+   # if the users does this he most probably has a problem with LyX that can better be solved
+   # by reinstalling LyX
+   # for beta and other test releases over-installing can even cause errors
+   MessageBox MB_YESNO|MB_DEFBUTTON2|MB_ICONEXCLAMATION "$(AlreadyInstalled)" /SD IDNO IDYES ForceInstallation 
+   Abort
+   ForceInstallation:
+  ${endif}
+  
+  # check if there is an existing LyX installation of the same LyX series
+  # we usually don't release more than 10 versions so with 20 we are safe to check if a newer version is installed
+  IntOp $4 ${APP_VERSION_REVISION} + 20
+  ${for} $5 0 $4
+   ${if} $MultiUser.Privileges == "Admin"
+   ${orif} $MultiUser.Privileges == "Power"
+    ReadRegStr $0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}${APP_VERSION_MAJOR}${APP_VERSION_MINOR}$5" "DisplayVersion"
+    # also check for an emergency release
+    ${if} $0 == ""
+     ReadRegStr $0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}${APP_VERSION_MAJOR}${APP_VERSION_MINOR}$51" "DisplayVersion"
+    ${endif}
+   ${else}
+    ReadRegStr $0 HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}${APP_VERSION_MAJOR}${APP_VERSION_MINOR}$5" "DisplayVersion"
+    # also check for an emergency release
+    ${if} $0 == ""
+     ReadRegStr $0 HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}${APP_VERSION_MAJOR}${APP_VERSION_MINOR}$51" "DisplayVersion"
+    ${endif}
+   ${endif}
+   ${if} $0 != ""
+    StrCpy $R5 $0 # store the read version number
+    StrCpy $OldVersionNumber "${APP_VERSION_MAJOR}${APP_VERSION_MINOR}$5"
+    # we don't stop here because we want the latest installed version
+   ${endif} 
+  ${next}
+  
+  ${if} $OldVersionNumber > ${APP_SERIES_KEY}
+   # store the version number and reformat it temporarily for the error message
+   StrCpy $R0 $OldVersionNumber
+   StrCpy $OldVersionNumber $R5
+   MessageBox MB_OK|MB_ICONSTOP "$(NewerInstalled)" /SD IDOK
+   StrCpy $OldVersionNumber $R0
+   Abort
+  ${endif}
+
+  # this can be reset to "true" in section SecDesktop
+  StrCpy $CreateDesktopIcon "false"
+  StrCpy $CreateFileAssociations "false"
+  ${IfNot} ${Silent}
+    # Show banner while installer is intializating 
+    Banner::show /NOUNLOAD "Checking system"
+  ${EndIf}
+  Call SearchExternal
+  
+  # select sections of already installed spell-checker dictionaries, make them read-only
+  # and set the necessary size to 0 bytes
+  StrCpy $String $FoundDict
+  StrCpy $Search "af_ZA"
+  Call StrPoint # function from LyXUtils.nsh
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDAfrikaans} $0
+   SectionSetSize ${SecDAfrikaans} 0
+  ${endif}
+  StrCpy $Search "ar_SA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDArabic} $0
+   SectionSetSize ${SecDArabic} 0
+  ${endif}
+  StrCpy $Search "hy_AM"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDArmenian} $0
+   SectionSetSize ${SecDArmenian} 0
+  ${endif}
+  StrCpy $Search "id_ID"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDIndonesian} $0
+   SectionSetSize ${SecDIndonesian} 0
+  ${endif}
+  StrCpy $Search "ms_MY"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDMalayan} $0
+   SectionSetSize ${SecDMalayan} 0
+  ${endif}
+  StrCpy $Search "be_BY"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDBelarusian} $0
+   SectionSetSize ${SecDBelarusian} 0
+  ${endif}
+  StrCpy $Search "br_FR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDBreton} $0
+   SectionSetSize ${SecDBreton} 0
+  ${endif}
+  StrCpy $Search "bg_BG"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDBulgarian} $0
+   SectionSetSize ${SecDBulgarian} 0
+  ${endif}
+  StrCpy $Search "ca_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDCatalanian} $0
+   SectionSetSize ${SecDCatalanian} 0
+  ${endif}
+  StrCpy $Search "cs_CZ"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDCzech} $0
+   SectionSetSize ${SecDCzech} 0
+  ${endif}
+  StrCpy $Search "cop_EG"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDCoptic} $0
+   SectionSetSize ${SecDCoptic} 0
+  ${endif}
+  StrCpy $Search "cy_GB"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDWelsh} $0
+   SectionSetSize ${SecDWelsh} 0
+  ${endif}
+  StrCpy $Search "da_DK"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDDanish} $0
+   SectionSetSize ${SecDDanish} 0
+  ${endif}
+  StrCpy $Search "de_AT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGermanAT} $0
+   SectionSetSize ${SecDGermanAT} 0
+  ${endif}
+  StrCpy $Search "de_CH"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGermanCH} $0
+   SectionSetSize ${SecDGermanCH} 0
+  ${endif}
+  StrCpy $Search "de_DE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGermanD} $0
+   SectionSetSize ${SecDGermanD} 0
+  ${endif}
+  StrCpy $Search "el_GR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGreek} $0
+   SectionSetSize ${SecDGreek} 0
+  ${endif}
+  StrCpy $Search "et_EE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEstonian} $0
+   SectionSetSize ${SecDEstonian} 0
+  ${endif}
+  StrCpy $Search "en_AU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEnglishAU} $0
+   SectionSetSize ${SecDEnglishAU} 0
+  ${endif}
+  StrCpy $Search "en_CA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEnglishCA} $0
+   SectionSetSize ${SecDEnglishCA} 0
+  ${endif}
+  StrCpy $Search "en_GB"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEnglishGB} $0
+   SectionSetSize ${SecDEnglishGB} 0
+  ${endif}
+  StrCpy $Search "en_NZ"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEnglishNZ} $0
+   SectionSetSize ${SecDEnglishNZ} 0
+  ${endif}
+  StrCpy $Search "en_US"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEnglishUS} $0
+   SectionSetSize ${SecDEnglishUS} 0
+  ${endif}
+  StrCpy $Search "es_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSpanishES} $0
+   SectionSetSize ${SecDSpanishES} 0
+  ${endif}
+  StrCpy $Search "es_MX"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSpanishMX} $0
+   SectionSetSize ${SecDSpanishMX} 0
+  ${endif}
+  StrCpy $Search "eo_EO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDEsperanto} $0
+   SectionSetSize ${SecDEsperanto} 0
+  ${endif}
+  StrCpy $Search "eu_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDBasque} $0
+   SectionSetSize ${SecDBasque} 0
+  ${endif}
+  StrCpy $Search "fa_IR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDFarsi} $0
+   SectionSetSize ${SecDFarsi} 0
+  ${endif}
+  StrCpy $Search "fr_CA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDFrenchCanada} $0
+   SectionSetSize ${SecDFrenchCanada} 0
+  ${endif}
+  StrCpy $Search "fr_FR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDFrench} $0
+   SectionSetSize ${SecDFrench} 0
+  ${endif}
+  StrCpy $Search "ga_IR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGaelic} $0
+   SectionSetSize ${SecDGaelic} 0
+  ${endif}
+  StrCpy $Search "gd_GB"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDScottish} $0
+   SectionSetSize ${SecDScottish} 0
+  ${endif}
+  StrCpy $Search "gl_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGalician} $0
+   SectionSetSize ${SecDGalician} 0
+  ${endif}
+  StrCpy $Search "ka_GE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDGeorgian} $0
+   SectionSetSize ${SecDGeorgian} 0
+  ${endif}
+  StrCpy $Search "he_IL"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDHebrew} $0
+   SectionSetSize ${SecDHebrew} 0
+  ${endif}
+  StrCpy $Search "hi_IN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDHindi} $0
+   SectionSetSize ${SecDHindi} 0
+  ${endif}
+  StrCpy $Search "hr_HR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDCroatian} $0
+   SectionSetSize ${SecDCroatian} 0
+  ${endif}
+  StrCpy $Search "hu_HU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDHungarian} $0
+   SectionSetSize ${SecDHungarian} 0
+  ${endif}
+  StrCpy $Search "ia_IA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDInterlingua} $0
+   SectionSetSize ${SecDInterlingua} 0
+  ${endif}
+  StrCpy $Search "is_IS"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDIcelandic} $0
+   SectionSetSize ${SecDIcelandic} 0
+  ${endif}
+  StrCpy $Search "it_IT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDItalian} $0
+   SectionSetSize ${SecDItalian} 0
+  ${endif}
+  StrCpy $Search "kk_KZ"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDKazakh} $0
+   SectionSetSize ${SecDKazakh} 0
+  ${endif}
+  StrCpy $Search "ko_KR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDKorean} $0
+   SectionSetSize ${SecDKorean} 0
+  ${endif}
+  StrCpy $Search "la_LA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDLatin} $0
+   SectionSetSize ${SecDLatin} 0
+  ${endif}
+  StrCpy $Search "lt_LT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDLithuanian} $0
+   SectionSetSize ${SecDLithuanian} 0
+  ${endif}
+  StrCpy $Search "lv_LV"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDLatvian} $0
+   SectionSetSize ${SecDLatvian} 0
+  ${endif}
+  StrCpy $Search "mr_IN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDMarathi} $0
+   SectionSetSize ${SecDMarathi} 0
+  ${endif}
+  StrCpy $Search "nl_NL"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDDutch} $0
+   SectionSetSize ${SecDDutch} 0
+  ${endif}
+  StrCpy $Search "nb_NO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDNorwegianNB} $0
+   SectionSetSize ${SecDNorwegianNB} 0
+  ${endif}
+  StrCpy $Search "nn_NO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDNorwegianNN} $0
+   SectionSetSize ${SecDNorwegianNN} 0
+  ${endif}
+  StrCpy $Search "oc_FR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDOccitan} $0
+   SectionSetSize ${SecDOccitan} 0
+  ${endif}
+  StrCpy $Search "pl_PL"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDPolish} $0
+   SectionSetSize ${SecDPolish} 0
+  ${endif}
+  StrCpy $Search "pt_BR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDPortugueseBR} $0
+   SectionSetSize ${SecDPortugueseBR} 0
+  ${endif}
+  StrCpy $Search "pt_PT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDPortuguesePT} $0
+   SectionSetSize ${SecDPortuguesePT} 0
+  ${endif}
+  StrCpy $Search "ro_RO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDRomanian} $0
+   SectionSetSize ${SecDRomanian} 0
+  ${endif}
+  StrCpy $Search "ru_RU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDRussian} $0
+   SectionSetSize ${SecDRussian} 0
+  ${endif}
+  StrCpy $Search "dsb_DE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSorbianD} $0
+   SectionSetSize ${SecDSorbianD} 0
+  ${endif}
+  StrCpy $Search "hsb_DE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSorbianH} $0
+   SectionSetSize ${SecDSorbianH} 0
+  ${endif}
+  StrCpy $Search "sq_AL"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDAlbanian} $0
+   SectionSetSize ${SecDAlbanian} 0
+  ${endif}
+  StrCpy $Search "sl_SI"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSlovenian} $0
+   SectionSetSize ${SecDSlovenian} 0
+  ${endif}
+  StrCpy $Search "sk_SK"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSlovakian} $0
+   SectionSetSize ${SecDSlovakian} 0
+  ${endif}
+  StrCpy $Search "sr_RS"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSerbianC} $0
+   SectionSetSize ${SecDSerbianC} 0
+  ${endif}
+  StrCpy $Search "sr_RS-Latin"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSerbianL} $0
+   SectionSetSize ${SecDSerbianL} 0
+  ${endif}
+  StrCpy $Search "sv_SE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDSwedish} $0
+   SectionSetSize ${SecDSwedish} 0
+  ${endif}
+  StrCpy $Search "ta_IN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDTamil} $0
+   SectionSetSize ${SecDTamil} 0
+  ${endif}
+  StrCpy $Search "te_IN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDTelugu} $0
+   SectionSetSize ${SecDTelugu} 0
+  ${endif}
+  StrCpy $Search "th_TH"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDThai} $0
+   SectionSetSize ${SecDThai} 0
+  ${endif}
+  StrCpy $Search "bo_CN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDTibetan} $0
+   SectionSetSize ${SecDTibetan} 0
+  ${endif}
+  StrCpy $Search "tk_TM"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDTurkmen} $0
+   SectionSetSize ${SecDTurkmen} 0
+  ${endif}
+  StrCpy $Search "tr_TR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDTurkish} $0
+   SectionSetSize ${SecDTurkish} 0
+  ${endif}
+  StrCpy $Search "uk_UA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDUkrainian} $0
+   SectionSetSize ${SecDUkrainian} 0
+  ${endif}
+  StrCpy $Search "ur_PK"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDUrdu} $0
+   SectionSetSize ${SecDUrdu} 0
+  ${endif}
+  StrCpy $Search "vi_VN"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecDVietnamese} $0
+   SectionSetSize ${SecDVietnamese} 0
+  ${endif}
+  
+  # select sections of already installed thesaurus dictionaries, make them read-only
+  # and set the necessary size to 0 bytes
+  StrCpy $String $FoundThes
+  StrCpy $Search "ar_SA"
+  Call StrPoint # function from LyXUtils.nsh
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTArabic} $0
+   SectionSetSize ${SecTArabic} 0
+  ${endif}
+  StrCpy $Search "bg_BG"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTBulgarian} $0
+   SectionSetSize ${SecTBulgarian} 0
+  ${endif}
+  StrCpy $Search "ca_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTCatalan} $0
+   SectionSetSize ${SecTCatalan} 0
+  ${endif}
+  StrCpy $Search "cs_CZ"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTCzech} $0
+   SectionSetSize ${SecTCzech} 0
+  ${endif}
+  StrCpy $Search "da_DK"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTDanish} $0
+   SectionSetSize ${SecTDanish} 0
+  ${endif}
+  StrCpy $Search "de_DE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTGermanDA} $0
+   SectionSetSize ${SecTGermanDA} 0
+  ${endif} 
+  StrCpy $Search "de_CH"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTGermanCH} $0
+   SectionSetSize ${SecTGermanCH} 0
+  ${endif}
+  StrCpy $Search "en_AU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTEnglishAU} $0
+   SectionSetSize ${SecTEnglishAU} 0
+  ${endif}
+  StrCpy $Search "en_GB"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTEnglishGB} $0
+   SectionSetSize ${SecTEnglishGB} 0
+  ${endif} 
+  StrCpy $Search "en_US"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTEnglishUS} $0
+   SectionSetSize ${SecTEnglishUS} 0
+  ${endif}
+  StrCpy $Search "es_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTSpanish} $0
+   SectionSetSize ${SecTSpanish} 0
+  ${endif}
+  StrCpy $Search "fr_FR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTFrench} $0
+   SectionSetSize ${SecTFrench} 0
+  ${endif}
+  StrCpy $Search "ga_IR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTGaelic} $0
+   SectionSetSize ${SecTGaelic} 0
+  ${endif}
+  StrCpy $Search "gl_ES"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTGalician} $0
+   SectionSetSize ${SecTGalician} 0
+  ${endif}
+  StrCpy $Search "el_GR"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTGreek} $0
+   SectionSetSize ${SecTGreek} 0
+  ${endif}
+  StrCpy $Search "is_IS"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTIcelandic} $0
+   SectionSetSize ${SecTIcelandic} 0
+  ${endif}
+  StrCpy $Search "it_IT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTItalian} $0
+   SectionSetSize ${SecTItalian} 0
+  ${endif}
+  StrCpy $Search "hu_HU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTHungarian} $0
+   SectionSetSize ${SecTHungarian} 0
+  ${endif}
+  StrCpy $Search "nb_NO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTNorwegianNB} $0
+   SectionSetSize ${SecTNorwegianNB} 0
+  ${endif}
+  StrCpy $Search "nn_NO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTNorwegianNN} $0
+   SectionSetSize ${SecTNorwegianNN} 0
+  ${endif}
+  StrCpy $Search "pl_PL"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTPolish} $0
+   SectionSetSize ${SecTPolish} 0
+  ${endif}
+  StrCpy $Search "pt_PT"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTPortuguese} $0
+   SectionSetSize ${SecTPortuguese} 0
+  ${endif}
+  StrCpy $Search "ro_RO"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTRomanian} $0
+   SectionSetSize ${SecTRomanian} 0
+  ${endif}
+  StrCpy $Search "ru_RU"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTRussian} $0
+   SectionSetSize ${SecTRussian} 0
+  ${endif}
+  StrCpy $Search "sl_SI"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTSlovenian} $0
+   SectionSetSize ${SecTSlovenian} 0
+  ${endif}
+  StrCpy $Search "sk_SK"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTSlovakian} $0
+   SectionSetSize ${SecTSlovakian} 0
+  ${endif}
+  StrCpy $Search "sv_SE"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTSwedish} $0
+   SectionSetSize ${SecTSwedish} 0
+  ${endif}
+  StrCpy $Search "uk_UA"
+  Call StrPoint
+  ${if} $Pointer != "-1"
+   IntOp $0 ${SF_SELECTED} | ${SF_RO}
+   SectionSetFlags ${SecTUkrainian} $0
+   SectionSetSize ${SecTUkrainian} 0
+  ${endif}
+  
+  ${IfNot} ${Silent}
+    Banner::destroy
+  ${EndIf}
+
+FunctionEnd
+
+# this function is called at first after starting the uninstaller
+Function un.onInit
+
+  !insertmacro MULTIUSER_UNINIT
+
+  # Check that LyX is not currently running
+  FindProcDLL::FindProc "${BIN_LYX}"
+  ${if} $R0 == "1"
+   MessageBox MB_OK|MB_ICONSTOP "$(UnInstallRunning)" /SD IDOK
+   Abort
+  ${endif}
+
+  # set registry root key
+  ${if} $MultiUser.Privileges == "Admin"
+  ${orif} $MultiUser.Privileges == "Power"
+    SetShellVarContext all
+  ${else}
+   SetShellVarContext current
+  ${endif}
+
+  # Ascertain whether the user has sufficient privileges to uninstall.
+  # abort when LyX was installed with admin permissions but the user doesn't have administrator privileges
+  ReadRegStr $0 HKLM "${APP_UNINST_KEY}" "DisplayVersion"
+  ${if} $0 != ""
+  ${andif} $MultiUser.Privileges != "Admin"
+  ${andif} $MultiUser.Privileges != "Power"
+   MessageBox MB_OK|MB_ICONSTOP "$(UnNotAdminLabel)" /SD IDOK
+   Abort
+  ${endif}
+  # warning when LyX couldn't be found in the registry
+  ${if} $0 == "" # check in HKCU
+   ReadRegStr $0 HKCU "${APP_UNINST_KEY}" "DisplayVersion"
+   ${if} $0 == ""
+     MessageBox MB_OK|MB_ICONEXCLAMATION "$(UnNotInRegistryLabel)" /SD IDOK
+   ${endif}
+  ${endif}
+  
+  # Macro to investigate name of LyX's preferences folders to be able remove them
+  !insertmacro UnAppPreSuff $AppPre $AppSuff # macro from LyXUtils.nsh
+
+  # test if MiKTeX was installed together with LyX
+  ReadRegStr $0 SHCTX "SOFTWARE\MiKTeX.org\MiKTeX" "OnlyWithLyX"
+  ${if} $0 == "Yes${APP_SERIES_KEY}"
+   SectionSetText 2 "MiKTeX" # names the corersponding uninstaller section
+   StrCpy $LaTeXInstalled "MiKTeX"
+  ${else}
+   SectionSetText 2 "" # hides the corresponding uninstaller section
+  ${endif}
+  
+  # question message if the user really wants to uninstall LyX
+  MessageBox MB_ICONQUESTION|MB_YESNO|MB_DEFBUTTON2 "$(UnReallyRemoveLabel)" /SD IDYES IDYES +2 # continue if yes
+  Abort
+
+FunctionEnd