diff --git a/nsis/GoldenDict-EnRuEn.nsi b/nsis/GoldenDict-EnRuEn.nsi
new file mode 100644
index 00000000..49a3db0f
--- /dev/null
+++ b/nsis/GoldenDict-EnRuEn.nsi
@@ -0,0 +1,437 @@
+!include "MUI2.nsh"
+
+  Name "GoldenDict"
+  OutFile "GoldenDict-1.0.0-EnRuEn-Install.exe"
+
+  InstallDir "$PROGRAMFILES\GoldenDict"
+
+  RequestExecutionLevel admin
+
+  SetCompressor /final lzma
+
+Var StartMenuFolder
+
+;--------------------------------
+;Interface Settings
+
+  !define MUI_ABORTWARNING
+
+;--------------------------------
+;Pages
+
+  !insertmacro MUI_PAGE_WELCOME
+  !insertmacro MUI_PAGE_LICENSE "LICENSE.txt"
+  !insertmacro MUI_PAGE_DIRECTORY
+
+  !insertmacro MUI_PAGE_STARTMENU GDApplication $StartMenuFolder
+
+  !insertmacro MUI_PAGE_INSTFILES
+  !insertmacro MUI_PAGE_FINISH
+
+  !insertmacro MUI_UNPAGE_WELCOME
+  !insertmacro MUI_UNPAGE_CONFIRM
+  !insertmacro MUI_UNPAGE_INSTFILES
+  !insertmacro MUI_UNPAGE_FINISH
+
+;--------------------------------
+;Languages
+
+  !insertmacro MUI_LANGUAGE "Russian"
+  !insertmacro MUI_LANGUAGE "English" ;first language is the default language
+  !insertmacro MUI_LANGUAGE "French"
+  !insertmacro MUI_LANGUAGE "German"
+  !insertmacro MUI_LANGUAGE "Spanish"
+  !insertmacro MUI_LANGUAGE "SpanishInternational"
+  !insertmacro MUI_LANGUAGE "SimpChinese"
+  !insertmacro MUI_LANGUAGE "TradChinese"
+  !insertmacro MUI_LANGUAGE "Japanese"
+  !insertmacro MUI_LANGUAGE "Korean"
+  !insertmacro MUI_LANGUAGE "Italian"
+  !insertmacro MUI_LANGUAGE "Dutch"
+  !insertmacro MUI_LANGUAGE "Danish"
+  !insertmacro MUI_LANGUAGE "Swedish"
+  !insertmacro MUI_LANGUAGE "Norwegian"
+  !insertmacro MUI_LANGUAGE "NorwegianNynorsk"
+  !insertmacro MUI_LANGUAGE "Finnish"
+  !insertmacro MUI_LANGUAGE "Greek"
+  !insertmacro MUI_LANGUAGE "Portuguese"
+  !insertmacro MUI_LANGUAGE "PortugueseBR"
+  !insertmacro MUI_LANGUAGE "Polish"
+  !insertmacro MUI_LANGUAGE "Ukrainian"
+  !insertmacro MUI_LANGUAGE "Czech"
+  !insertmacro MUI_LANGUAGE "Slovak"
+  !insertmacro MUI_LANGUAGE "Croatian"
+  !insertmacro MUI_LANGUAGE "Bulgarian"
+  !insertmacro MUI_LANGUAGE "Hungarian"
+  !insertmacro MUI_LANGUAGE "Thai"
+  !insertmacro MUI_LANGUAGE "Romanian"
+  !insertmacro MUI_LANGUAGE "Latvian"
+  !insertmacro MUI_LANGUAGE "Macedonian"
+  !insertmacro MUI_LANGUAGE "Estonian"
+  !insertmacro MUI_LANGUAGE "Turkish"
+  !insertmacro MUI_LANGUAGE "Lithuanian"
+  !insertmacro MUI_LANGUAGE "Slovenian"
+  !insertmacro MUI_LANGUAGE "Serbian"
+  !insertmacro MUI_LANGUAGE "SerbianLatin"
+  !insertmacro MUI_LANGUAGE "Arabic"
+  !insertmacro MUI_LANGUAGE "Farsi"
+  !insertmacro MUI_LANGUAGE "Hebrew"
+  !insertmacro MUI_LANGUAGE "Indonesian"
+  !insertmacro MUI_LANGUAGE "Mongolian"
+  !insertmacro MUI_LANGUAGE "Luxembourgish"
+  !insertmacro MUI_LANGUAGE "Albanian"
+  !insertmacro MUI_LANGUAGE "Breton"
+  !insertmacro MUI_LANGUAGE "Belarusian"
+  !insertmacro MUI_LANGUAGE "Icelandic"
+  !insertmacro MUI_LANGUAGE "Malay"
+  !insertmacro MUI_LANGUAGE "Bosnian"
+  !insertmacro MUI_LANGUAGE "Kurdish"
+  !insertmacro MUI_LANGUAGE "Irish"
+  !insertmacro MUI_LANGUAGE "Uzbek"
+  !insertmacro MUI_LANGUAGE "Galician"
+  !insertmacro MUI_LANGUAGE "Afrikaans"
+  !insertmacro MUI_LANGUAGE "Catalan"
+  !insertmacro MUI_LANGUAGE "Esperanto"
+
+;--------------------------------
+;Installer Sections
+
+Section
+
+  SetOutPath "$INSTDIR"
+
+  CreateDirectory $INSTDIR\imageformats
+  SetOutPath $INSTDIR\imageformats
+  File ..\release\imageformats\*
+
+  CreateDirectory $INSTDIR\phonon_backend
+  SetOutPath $INSTDIR\phonon_backend
+  File ..\release\phonon_backend\*
+
+  CreateDirectory $INSTDIR\locale
+  SetOutPath $INSTDIR\locale
+  File ..\release\locale\*
+
+  CreateDirectory $INSTDIR\content
+  SetOutPath $INSTDIR\content
+  File ..\release\content\*
+  CreateDirectory $INSTDIR\content\morphology
+  SetOutPath $INSTDIR\content\morphology
+  File ..\release\content\morphology\*
+
+  SetOutPath $INSTDIR
+  File ..\release\*.dll
+  File LICENSE.txt
+  File /oname=$INSTDIR\GoldenDict.exe ..\release\goldendict.exe
+  
+  WriteUninstaller "$INSTDIR\Uninstall.exe"
+
+  !insertmacro MUI_STARTMENU_WRITE_BEGIN GDApplication
+      
+  CreateDirectory "$SMPROGRAMS\$StartMenuFolder"
+  CreateShortCut "$SMPROGRAMS\$StartMenuFolder\GoldenDict.lnk" "$INSTDIR\GoldenDict.exe"
+  CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Uninstall.lnk" "$INSTDIR\Uninstall.exe"
+ !insertmacro MUI_STARTMENU_WRITE_END
+
+
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict" \
+                 "DisplayName" "GoldenDict"
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict" \
+                 "UninstallString" "$INSTDIR\Uninstall.exe"
+
+SectionEnd
+
+!define PROGRAM_NAME "GoldenDict"
+
+Function .onInit
+
+  !insertmacro MUI_LANGDLL_DISPLAY
+
+  ReadRegStr $R0 HKLM \
+  "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PROGRAM_NAME}" \
+  "UninstallString"
+  StrCmp $R0 "" done
+ 
+  MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
+  "${PROGRAM_NAME} is already installed. $\n$\nClick `OK` to remove the \
+  previous version or `Cancel` to cancel this upgrade." \
+  IDOK uninst
+  Abort
+ 
+;Run the uninstaller
+uninst:
+  ClearErrors
+  ExecWait '$R0 /NODELCFG=1 _?=$INSTDIR' ;Do not copy the uninstaller to a temp file
+ 
+  IfErrors no_remove_uninstaller done
+    ;You can either use Delete /REBOOTOK in the uninstaller or add some code
+    ;here to remove the uninstaller. Use a registry key to check
+    ;whether the user has chosen to uninstall. If you are using an uninstaller
+    ;components page, make sure all sections are uninstalled.
+  no_remove_uninstaller:
+ 
+done:
+
+FunctionEnd
+
+;--------------------------------
+;Uninstaller Section
+
+!define WND_CLASS "QWidget"
+!define WND_TITLE "GoldenDict"
+!define TO_MS 2000
+!define SYNC_TERM 0x00100001
+ 
+!include WinMessages.nsh
+ 
+LangString termMsg ${LANG_ENGLISH} "Installer cannot stop running ${WND_TITLE}.$\nDo you want to terminate process?"
+LangString stopMsg ${LANG_ENGLISH} "Stopping ${WND_TITLE}"
+ 
+!macro TerminateApp
+ 
+    Push $0 ; window handle
+    Push $1
+    Push $2 ; process handle
+    DetailPrint "$(stopMsg)"
+    FindWindow $0 '${WND_CLASS}' ''
+    IntCmp $0 0 done
+    System::Call 'user32.dll::GetWindowThreadProcessId(i r0, *i .r1) i .r2'
+    System::Call 'kernel32.dll::OpenProcess(i ${SYNC_TERM}, i 0, i r1) i .r2'
+    SendMessage $0 ${WM_CLOSE} 0 0 /TIMEOUT=${TO_MS}
+    System::Call 'kernel32.dll::WaitForSingleObject(i r2, i ${TO_MS}) i .r1'
+  terminate:
+    System::Call 'kernel32.dll::TerminateProcess(i r2, i 0) i .r1'
+  close:
+    System::Call 'kernel32.dll::CloseHandle(i r2) i .r1'
+  done:
+    Pop $2
+    Pop $1
+    Pop $0
+ 
+!macroend
+
+Function un.StrStr
+/*After this point:
+  ------------------------------------------
+  $R0 = SubString (input)
+  $R1 = String (input)
+  $R2 = SubStringLen (temp)
+  $R3 = StrLen (temp)
+  $R4 = StartCharPos (temp)
+  $R5 = TempStr (temp)*/
+ 
+  ;Get input from user
+  Exch $R0
+  Exch
+  Exch $R1
+  Push $R2
+  Push $R3
+  Push $R4
+  Push $R5
+ 
+  ;Get "String" and "SubString" length
+  StrLen $R2 $R0
+  StrLen $R3 $R1
+  ;Start "StartCharPos" counter
+  StrCpy $R4 0
+ 
+  ;Loop until "SubString" is found or "String" reaches its end
+  loop:
+    ;Remove everything before and after the searched part ("TempStr")
+    StrCpy $R5 $R1 $R2 $R4
+ 
+    ;Compare "TempStr" with "SubString"
+    StrCmp $R5 $R0 done
+    ;If not "SubString", this could be "String"'s end
+    IntCmp $R4 $R3 done 0 done
+    ;If not, continue the loop
+    IntOp $R4 $R4 + 1
+    Goto loop
+  done:
+ 
+/*After this point:
+  ------------------------------------------
+  $R0 = ResultVar (output)*/
+ 
+  ;Remove part before "SubString" on "String" (if there has one)
+  StrCpy $R0 $R1 `` $R4
+ 
+  ;Return output to user
+  Pop $R5
+  Pop $R4
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0
+FunctionEnd
+
+ ; GetParameters
+ ; input, none
+ ; output, top of stack (replaces, with e.g. whatever)
+ ; modifies no other variables.
+ 
+Function un.GetParameters
+ 
+  Push $R0
+  Push $R1
+  Push $R2
+  Push $R3
+ 
+  StrCpy $R2 1
+  StrLen $R3 $CMDLINE
+ 
+  ;Check for quote or space
+  StrCpy $R0 $CMDLINE $R2
+  StrCmp $R0 '"' 0 +3
+    StrCpy $R1 '"'
+    Goto loop
+  StrCpy $R1 " "
+ 
+  loop:
+    IntOp $R2 $R2 + 1
+    StrCpy $R0 $CMDLINE 1 $R2
+    StrCmp $R0 $R1 get
+    StrCmp $R2 $R3 get
+    Goto loop
+ 
+  get:
+    IntOp $R2 $R2 + 1
+    StrCpy $R0 $CMDLINE 1 $R2
+    StrCmp $R0 " " get
+    StrCpy $R0 $CMDLINE "" $R2
+ 
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0
+ 
+FunctionEnd
+
+Function un.GetParameterValue
+  Exch $R0  ; get the top of the stack(default parameter) into R0
+  Exch      ; exchange the top of the stack(default) with
+            ; the second in the stack(parameter to search for)
+  Exch $R1  ; get the top of the stack(search parameter) into $R1
+ 
+  ;Preserve on the stack the registers used in this function
+  Push $R2
+  Push $R3
+  Push $R4
+  Push $R5
+ 
+  Strlen $R2 $R1+2    ; store the length of the search string into R2
+ 
+  Call un.GetParameters  ; get the command line parameters
+  Pop $R3             ; store the command line string in R3
+ 
+  # search for quoted search string
+  StrCpy $R5 '"'      ; later on we want to search for a open quote
+  Push $R3            ; push the 'search in' string onto the stack
+  Push '"/$R1='       ; push the 'search for'
+  Call un.StrStr         ; search for the quoted parameter value
+  Pop $R4
+  StrCpy $R4 $R4 "" 1   ; skip over open quote character, "" means no maxlen
+  StrCmp $R4 "" "" next ; if we didn't find an empty string go to next
+ 
+  # search for non-quoted search string
+  StrCpy $R5 ' '      ; later on we want to search for a space since we
+                      ; didn't start with an open quote '"' we shouldn't
+                      ; look for a close quote '"'
+  Push $R3            ; push the command line back on the stack for searching
+  Push '/$R1='        ; search for the non-quoted search string
+  Call un.StrStr
+  Pop $R4
+ 
+  ; $R4 now contains the parameter string starting at the search string,
+  ; if it was found
+next:
+  StrCmp $R4 "" check_for_switch ; if we didn't find anything then look for
+                                 ; usage as a command line switch
+  # copy the value after /$R1= by using StrCpy with an offset of $R2,
+  # the length of '/OUTPUT='
+  StrCpy $R0 $R4 "" $R2  ; copy commandline text beyond parameter into $R0
+  # search for the next parameter so we can trim this extra text off
+  Push $R0
+  Push $R5            ; search for either the first space ' ', or the first
+                      ; quote '"'
+                      ; if we found '"/output' then we want to find the
+                      ; ending ", as in '"/output=somevalue"'
+                      ; if we found '/output' then we want to find the first
+                      ; space after '/output=somevalue'
+  Call un.StrStr         ; search for the next parameter
+  Pop $R4
+  StrCmp $R4 "" done  ; if 'somevalue' is missing, we are done
+  StrLen $R4 $R4      ; get the length of 'somevalue' so we can copy this
+                      ; text into our output buffer
+  StrCpy $R0 $R0 -$R4 ; using the length of the string beyond the value,
+                      ; copy only the value into $R0
+  goto done           ; if we are in the parameter retrieval path skip over
+                      ; the check for a command line switch
+ 
+; See if the parameter was specified as a command line switch, like '/output'
+check_for_switch:
+  Push $R3            ; push the command line back on the stack for searching
+  Push '/$R1'         ; search for the non-quoted search string
+  Call un.StrStr
+  Pop $R4
+  StrCmp $R4 "" done  ; if we didn't find anything then use the default
+  StrCpy $R0 ""       ; otherwise copy in an empty string since we found the
+                      ; parameter, just didn't find a value
+ 
+done:
+  Pop $R5
+  Pop $R4
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0 ; put the value in $R0 at the top of the stack
+FunctionEnd
+
+Section "Uninstall"
+
+  !insertmacro TerminateApp
+
+  Push "NODELCFG"         ; push the search string onto the stack
+  Push "0"   ; push a default value onto the stack
+  Call un.GetParameterValue
+  Pop $2
+
+  StrCmp $2 "1" skip_cfg
+
+  MessageBox MB_YESNO "Delete all configuration data and index? This will save a lot of space, but at the expense of reconfiguring and reindexing everyting if GoldenDict is ever installed again." IDNO skip_cfg
+ 
+  RMDir /r $APPDATA\GoldenDict
+
+  skip_cfg:
+
+  Delete $INSTDIR\content\morphology\*
+  RMDir $INSTDIR\content\morphology
+  Delete $INSTDIR\content\*
+  RMDir $INSTDIR\content
+
+  Delete $INSTDIR\locale\*
+  RMDir $INSTDIR\locale
+
+  Delete $INSTDIR\imageformats\*
+  RMDir  $INSTDIR\imageformats
+
+  Delete $INSTDIR\phonon_backend\*
+  RMDir  $INSTDIR\phonon_backend
+
+  Delete $INSTDIR\*.dll
+  Delete $INSTDIR\LICENSE.txt
+  Delete $INSTDIR\GoldenDict.exe
+
+  Delete "$INSTDIR\Uninstall.exe"
+
+  RMDir "$INSTDIR"
+
+  !insertmacro MUI_STARTMENU_GETFOLDER GDApplication $StartMenuFolder
+
+  Delete "$SMPROGRAMS\$StartMenuFolder\GoldenDict.lnk"
+  Delete "$SMPROGRAMS\$StartMenuFolder\Uninstall.lnk"
+  RMDir "$SMPROGRAMS\$StartMenuFolder"
+  
+  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict"
+
+SectionEnd
diff --git a/nsis/GoldenDict.nsi b/nsis/GoldenDict.nsi
new file mode 100644
index 00000000..89ce41c0
--- /dev/null
+++ b/nsis/GoldenDict.nsi
@@ -0,0 +1,434 @@
+!include "MUI2.nsh"
+
+  Name "GoldenDict"
+  OutFile "GoldenDict-1.0.0-Install.exe"
+
+  InstallDir "$PROGRAMFILES\GoldenDict"
+
+  RequestExecutionLevel admin
+
+  SetCompressor /final lzma
+
+Var StartMenuFolder
+
+;--------------------------------
+;Interface Settings
+
+  !define MUI_ABORTWARNING
+
+;--------------------------------
+;Pages
+
+  !insertmacro MUI_PAGE_WELCOME
+  !insertmacro MUI_PAGE_LICENSE "LICENSE.txt"
+  !insertmacro MUI_PAGE_DIRECTORY
+
+  !insertmacro MUI_PAGE_STARTMENU GDApplication $StartMenuFolder
+
+  !insertmacro MUI_PAGE_INSTFILES
+  !insertmacro MUI_PAGE_FINISH
+
+  !insertmacro MUI_UNPAGE_WELCOME
+  !insertmacro MUI_UNPAGE_CONFIRM
+  !insertmacro MUI_UNPAGE_INSTFILES
+  !insertmacro MUI_UNPAGE_FINISH
+
+;--------------------------------
+;Languages
+
+  !insertmacro MUI_LANGUAGE "English" ;first language is the default language
+  !insertmacro MUI_LANGUAGE "French"
+  !insertmacro MUI_LANGUAGE "German"
+  !insertmacro MUI_LANGUAGE "Spanish"
+  !insertmacro MUI_LANGUAGE "SpanishInternational"
+  !insertmacro MUI_LANGUAGE "SimpChinese"
+  !insertmacro MUI_LANGUAGE "TradChinese"
+  !insertmacro MUI_LANGUAGE "Japanese"
+  !insertmacro MUI_LANGUAGE "Korean"
+  !insertmacro MUI_LANGUAGE "Italian"
+  !insertmacro MUI_LANGUAGE "Dutch"
+  !insertmacro MUI_LANGUAGE "Danish"
+  !insertmacro MUI_LANGUAGE "Swedish"
+  !insertmacro MUI_LANGUAGE "Norwegian"
+  !insertmacro MUI_LANGUAGE "NorwegianNynorsk"
+  !insertmacro MUI_LANGUAGE "Finnish"
+  !insertmacro MUI_LANGUAGE "Greek"
+  !insertmacro MUI_LANGUAGE "Russian"
+  !insertmacro MUI_LANGUAGE "Portuguese"
+  !insertmacro MUI_LANGUAGE "PortugueseBR"
+  !insertmacro MUI_LANGUAGE "Polish"
+  !insertmacro MUI_LANGUAGE "Ukrainian"
+  !insertmacro MUI_LANGUAGE "Czech"
+  !insertmacro MUI_LANGUAGE "Slovak"
+  !insertmacro MUI_LANGUAGE "Croatian"
+  !insertmacro MUI_LANGUAGE "Bulgarian"
+  !insertmacro MUI_LANGUAGE "Hungarian"
+  !insertmacro MUI_LANGUAGE "Thai"
+  !insertmacro MUI_LANGUAGE "Romanian"
+  !insertmacro MUI_LANGUAGE "Latvian"
+  !insertmacro MUI_LANGUAGE "Macedonian"
+  !insertmacro MUI_LANGUAGE "Estonian"
+  !insertmacro MUI_LANGUAGE "Turkish"
+  !insertmacro MUI_LANGUAGE "Lithuanian"
+  !insertmacro MUI_LANGUAGE "Slovenian"
+  !insertmacro MUI_LANGUAGE "Serbian"
+  !insertmacro MUI_LANGUAGE "SerbianLatin"
+  !insertmacro MUI_LANGUAGE "Arabic"
+  !insertmacro MUI_LANGUAGE "Farsi"
+  !insertmacro MUI_LANGUAGE "Hebrew"
+  !insertmacro MUI_LANGUAGE "Indonesian"
+  !insertmacro MUI_LANGUAGE "Mongolian"
+  !insertmacro MUI_LANGUAGE "Luxembourgish"
+  !insertmacro MUI_LANGUAGE "Albanian"
+  !insertmacro MUI_LANGUAGE "Breton"
+  !insertmacro MUI_LANGUAGE "Belarusian"
+  !insertmacro MUI_LANGUAGE "Icelandic"
+  !insertmacro MUI_LANGUAGE "Malay"
+  !insertmacro MUI_LANGUAGE "Bosnian"
+  !insertmacro MUI_LANGUAGE "Kurdish"
+  !insertmacro MUI_LANGUAGE "Irish"
+  !insertmacro MUI_LANGUAGE "Uzbek"
+  !insertmacro MUI_LANGUAGE "Galician"
+  !insertmacro MUI_LANGUAGE "Afrikaans"
+  !insertmacro MUI_LANGUAGE "Catalan"
+  !insertmacro MUI_LANGUAGE "Esperanto"
+
+;--------------------------------
+;Installer Sections
+
+Section
+
+  SetOutPath "$INSTDIR"
+
+  CreateDirectory $INSTDIR\imageformats
+  SetOutPath $INSTDIR\imageformats
+  File ..\release\imageformats\*
+
+  CreateDirectory $INSTDIR\phonon_backend
+  SetOutPath $INSTDIR\phonon_backend
+  File ..\release\phonon_backend\*
+
+  CreateDirectory $INSTDIR\locale
+  SetOutPath $INSTDIR\locale
+  File ..\release\locale\*
+
+  CreateDirectory $INSTDIR\content
+  CreateDirectory $INSTDIR\content\morphology
+  SetOutPath $INSTDIR\content\morphology
+  File ..\release\content\morphology\*
+
+  SetOutPath $INSTDIR
+  File ..\release\*.dll
+  File LICENSE.txt
+  File /oname=$INSTDIR\GoldenDict.exe ..\release\goldendict.exe
+  
+  WriteUninstaller "$INSTDIR\Uninstall.exe"
+
+  !insertmacro MUI_STARTMENU_WRITE_BEGIN GDApplication
+      
+  CreateDirectory "$SMPROGRAMS\$StartMenuFolder"
+  CreateShortCut "$SMPROGRAMS\$StartMenuFolder\GoldenDict.lnk" "$INSTDIR\GoldenDict.exe"
+  CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Uninstall.lnk" "$INSTDIR\Uninstall.exe"
+ !insertmacro MUI_STARTMENU_WRITE_END
+
+
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict" \
+                 "DisplayName" "GoldenDict"
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict" \
+                 "UninstallString" "$INSTDIR\Uninstall.exe"
+
+SectionEnd
+
+!define PROGRAM_NAME "GoldenDict"
+
+Function .onInit
+
+  !insertmacro MUI_LANGDLL_DISPLAY
+
+  ReadRegStr $R0 HKLM \
+  "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PROGRAM_NAME}" \
+  "UninstallString"
+  StrCmp $R0 "" done
+ 
+  MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
+  "${PROGRAM_NAME} is already installed. $\n$\nClick `OK` to remove the \
+  previous version or `Cancel` to cancel this upgrade." \
+  IDOK uninst
+  Abort
+ 
+;Run the uninstaller
+uninst:
+  ClearErrors
+  ExecWait '$R0 /NODELCFG=1 _?=$INSTDIR' ;Do not copy the uninstaller to a temp file
+ 
+  IfErrors no_remove_uninstaller done
+    ;You can either use Delete /REBOOTOK in the uninstaller or add some code
+    ;here to remove the uninstaller. Use a registry key to check
+    ;whether the user has chosen to uninstall. If you are using an uninstaller
+    ;components page, make sure all sections are uninstalled.
+  no_remove_uninstaller:
+ 
+done:
+
+FunctionEnd
+
+;--------------------------------
+;Uninstaller Section
+
+!define WND_CLASS "QWidget"
+!define WND_TITLE "GoldenDict"
+!define TO_MS 2000
+!define SYNC_TERM 0x00100001
+ 
+!include WinMessages.nsh
+ 
+LangString termMsg ${LANG_ENGLISH} "Installer cannot stop running ${WND_TITLE}.$\nDo you want to terminate process?"
+LangString stopMsg ${LANG_ENGLISH} "Stopping ${WND_TITLE}"
+ 
+!macro TerminateApp
+ 
+    Push $0 ; window handle
+    Push $1
+    Push $2 ; process handle
+    DetailPrint "$(stopMsg)"
+    FindWindow $0 '${WND_CLASS}' ''
+    IntCmp $0 0 done
+    System::Call 'user32.dll::GetWindowThreadProcessId(i r0, *i .r1) i .r2'
+    System::Call 'kernel32.dll::OpenProcess(i ${SYNC_TERM}, i 0, i r1) i .r2'
+    SendMessage $0 ${WM_CLOSE} 0 0 /TIMEOUT=${TO_MS}
+    System::Call 'kernel32.dll::WaitForSingleObject(i r2, i ${TO_MS}) i .r1'
+  terminate:
+    System::Call 'kernel32.dll::TerminateProcess(i r2, i 0) i .r1'
+  close:
+    System::Call 'kernel32.dll::CloseHandle(i r2) i .r1'
+  done:
+    Pop $2
+    Pop $1
+    Pop $0
+ 
+!macroend
+
+Function un.StrStr
+/*After this point:
+  ------------------------------------------
+  $R0 = SubString (input)
+  $R1 = String (input)
+  $R2 = SubStringLen (temp)
+  $R3 = StrLen (temp)
+  $R4 = StartCharPos (temp)
+  $R5 = TempStr (temp)*/
+ 
+  ;Get input from user
+  Exch $R0
+  Exch
+  Exch $R1
+  Push $R2
+  Push $R3
+  Push $R4
+  Push $R5
+ 
+  ;Get "String" and "SubString" length
+  StrLen $R2 $R0
+  StrLen $R3 $R1
+  ;Start "StartCharPos" counter
+  StrCpy $R4 0
+ 
+  ;Loop until "SubString" is found or "String" reaches its end
+  loop:
+    ;Remove everything before and after the searched part ("TempStr")
+    StrCpy $R5 $R1 $R2 $R4
+ 
+    ;Compare "TempStr" with "SubString"
+    StrCmp $R5 $R0 done
+    ;If not "SubString", this could be "String"'s end
+    IntCmp $R4 $R3 done 0 done
+    ;If not, continue the loop
+    IntOp $R4 $R4 + 1
+    Goto loop
+  done:
+ 
+/*After this point:
+  ------------------------------------------
+  $R0 = ResultVar (output)*/
+ 
+  ;Remove part before "SubString" on "String" (if there has one)
+  StrCpy $R0 $R1 `` $R4
+ 
+  ;Return output to user
+  Pop $R5
+  Pop $R4
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0
+FunctionEnd
+
+ ; GetParameters
+ ; input, none
+ ; output, top of stack (replaces, with e.g. whatever)
+ ; modifies no other variables.
+ 
+Function un.GetParameters
+ 
+  Push $R0
+  Push $R1
+  Push $R2
+  Push $R3
+ 
+  StrCpy $R2 1
+  StrLen $R3 $CMDLINE
+ 
+  ;Check for quote or space
+  StrCpy $R0 $CMDLINE $R2
+  StrCmp $R0 '"' 0 +3
+    StrCpy $R1 '"'
+    Goto loop
+  StrCpy $R1 " "
+ 
+  loop:
+    IntOp $R2 $R2 + 1
+    StrCpy $R0 $CMDLINE 1 $R2
+    StrCmp $R0 $R1 get
+    StrCmp $R2 $R3 get
+    Goto loop
+ 
+  get:
+    IntOp $R2 $R2 + 1
+    StrCpy $R0 $CMDLINE 1 $R2
+    StrCmp $R0 " " get
+    StrCpy $R0 $CMDLINE "" $R2
+ 
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0
+ 
+FunctionEnd
+
+Function un.GetParameterValue
+  Exch $R0  ; get the top of the stack(default parameter) into R0
+  Exch      ; exchange the top of the stack(default) with
+            ; the second in the stack(parameter to search for)
+  Exch $R1  ; get the top of the stack(search parameter) into $R1
+ 
+  ;Preserve on the stack the registers used in this function
+  Push $R2
+  Push $R3
+  Push $R4
+  Push $R5
+ 
+  Strlen $R2 $R1+2    ; store the length of the search string into R2
+ 
+  Call un.GetParameters  ; get the command line parameters
+  Pop $R3             ; store the command line string in R3
+ 
+  # search for quoted search string
+  StrCpy $R5 '"'      ; later on we want to search for a open quote
+  Push $R3            ; push the 'search in' string onto the stack
+  Push '"/$R1='       ; push the 'search for'
+  Call un.StrStr         ; search for the quoted parameter value
+  Pop $R4
+  StrCpy $R4 $R4 "" 1   ; skip over open quote character, "" means no maxlen
+  StrCmp $R4 "" "" next ; if we didn't find an empty string go to next
+ 
+  # search for non-quoted search string
+  StrCpy $R5 ' '      ; later on we want to search for a space since we
+                      ; didn't start with an open quote '"' we shouldn't
+                      ; look for a close quote '"'
+  Push $R3            ; push the command line back on the stack for searching
+  Push '/$R1='        ; search for the non-quoted search string
+  Call un.StrStr
+  Pop $R4
+ 
+  ; $R4 now contains the parameter string starting at the search string,
+  ; if it was found
+next:
+  StrCmp $R4 "" check_for_switch ; if we didn't find anything then look for
+                                 ; usage as a command line switch
+  # copy the value after /$R1= by using StrCpy with an offset of $R2,
+  # the length of '/OUTPUT='
+  StrCpy $R0 $R4 "" $R2  ; copy commandline text beyond parameter into $R0
+  # search for the next parameter so we can trim this extra text off
+  Push $R0
+  Push $R5            ; search for either the first space ' ', or the first
+                      ; quote '"'
+                      ; if we found '"/output' then we want to find the
+                      ; ending ", as in '"/output=somevalue"'
+                      ; if we found '/output' then we want to find the first
+                      ; space after '/output=somevalue'
+  Call un.StrStr         ; search for the next parameter
+  Pop $R4
+  StrCmp $R4 "" done  ; if 'somevalue' is missing, we are done
+  StrLen $R4 $R4      ; get the length of 'somevalue' so we can copy this
+                      ; text into our output buffer
+  StrCpy $R0 $R0 -$R4 ; using the length of the string beyond the value,
+                      ; copy only the value into $R0
+  goto done           ; if we are in the parameter retrieval path skip over
+                      ; the check for a command line switch
+ 
+; See if the parameter was specified as a command line switch, like '/output'
+check_for_switch:
+  Push $R3            ; push the command line back on the stack for searching
+  Push '/$R1'         ; search for the non-quoted search string
+  Call un.StrStr
+  Pop $R4
+  StrCmp $R4 "" done  ; if we didn't find anything then use the default
+  StrCpy $R0 ""       ; otherwise copy in an empty string since we found the
+                      ; parameter, just didn't find a value
+ 
+done:
+  Pop $R5
+  Pop $R4
+  Pop $R3
+  Pop $R2
+  Pop $R1
+  Exch $R0 ; put the value in $R0 at the top of the stack
+FunctionEnd
+
+Section "Uninstall"
+
+  !insertmacro TerminateApp
+
+  Push "NODELCFG"         ; push the search string onto the stack
+  Push "0"   ; push a default value onto the stack
+  Call un.GetParameterValue
+  Pop $2
+
+  StrCmp $2 "1" skip_cfg
+
+  MessageBox MB_YESNO "Delete all configuration data and index? This will save a lot of space, but at the expense of reconfiguring and reindexing everyting if GoldenDict is ever installed again." IDNO skip_cfg
+ 
+  RMDir /r $APPDATA\GoldenDict
+
+  skip_cfg:
+
+  Delete $INSTDIR\content\morphology\*
+  RMDir $INSTDIR\content\morphology
+  RMDir $INSTDIR\content
+
+  Delete $INSTDIR\locale\*
+  RMDir $INSTDIR\locale
+
+  Delete $INSTDIR\imageformats\*
+  RMDir  $INSTDIR\imageformats
+
+  Delete $INSTDIR\phonon_backend\*
+  RMDir  $INSTDIR\phonon_backend
+
+  Delete $INSTDIR\*.dll
+  Delete $INSTDIR\LICENSE.txt
+  Delete $INSTDIR\GoldenDict.exe
+
+  Delete "$INSTDIR\Uninstall.exe"
+
+  RMDir "$INSTDIR"
+
+  !insertmacro MUI_STARTMENU_GETFOLDER GDApplication $StartMenuFolder
+
+  Delete "$SMPROGRAMS\$StartMenuFolder\GoldenDict.lnk"
+  Delete "$SMPROGRAMS\$StartMenuFolder\Uninstall.lnk"
+  RMDir "$SMPROGRAMS\$StartMenuFolder"
+  
+  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\GoldenDict"
+
+SectionEnd