Question

我正在使用NSIS为程序创建安装程序，检测此程序是否已安装的最佳方法是什么？此外，由于我从autorun.inf运行安装程序，如果它找到已安装的副本，我是否可以立即退出安装程序？有更好的方法吗？

Answer 1

这个怎么样？我有一个古老的NSIS剧本。

; Check to see if already installed
  ReadRegStr $R0 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\<YOUR-APP-NAME>" "UninstallString"
  IfFileExists $R0 +1 NotInstalled
  messagebox::show MB_DEFBUTTON4|MB_TOPMOST "<YOUR-APP-NAME>" \
    "0,103" \
    "<YOUR-APP-NAME> is already installed." \
    "Launch Uninstall" "Cancel"
    Pop $R1
  StrCmp $R1 2 Quit +1
  Exec $R0
Quit:
  Quit

NotInstalled:

Answer 2

我一直在使用稍微复杂的测试，它也检查已安装软件的版本：

!define PRODUCT_VERSION "1.2.0"

!include "WordFunc.nsh"
  !insertmacro VersionCompare

Var UNINSTALL_OLD_VERSION

...

Section "Core System" CoreSystem
  StrCmp $UNINSTALL_OLD_VERSION "" core.files
  ExecWait '$UNINSTALL_OLD_VERSION'

core.files:

  ...
  WriteRegStr HKLM "Software\${PRODUCT_REG_KEY}" "" $INSTDIR
  WriteRegStr HKLM "Software\${PRODUCT_REG_KEY}" "Version" "${PRODUCT_VERSION}"
  ...
SectionEnd

...

Function .onInit
  ;Check earlier installation
  ClearErrors
  ReadRegStr $0 HKLM "Software\${PRODUCT_REG_KEY}" "Version"
  IfErrors init.uninst ; older versions might not have "Version" string set
  ${VersionCompare} $0 ${PRODUCT_VERSION} $1
  IntCmp $1 2 init.uninst
    MessageBox MB_YESNO|MB_ICONQUESTION "${PRODUCT_NAME} version $0 seems to be already installed on your system.$\nWould you like to proceed with the installation of version ${PRODUCT_VERSION}?" \
        IDYES init.uninst
    Quit

init.uninst:
  ClearErrors
  ReadRegStr $0 HKLM "Software\${PRODUCT_REG_KEY}" ""
  IfErrors init.done
  StrCpy $UNINSTALL_OLD_VERSION '"$0\uninstall.exe" /S _?=$0'

init.done:
FunctionEnd

你当然要填写细节，这只会给你一个粗略的骨架。

Answer 3

创建卸载程序后，在注册表中创建产品名称条目

!define PRODUCT_UNINST_ROOT_KEY "HKLM"
!define PRODUCT_UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANY_NAME} ${PRODUCT_NAME}"
Section -Post
  SetShellVarContext current
  WriteUninstaller "${UNINST_PATH}\uninst.exe"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "DisplayName" "$(^Name)"

查看产品是否已安装

Function IsProductInstalled
  ClearErrors
  ReadRegStr $2 ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "DisplayName"  
  StrCmp $2 "" exit

在您的卸载中，您应该这样做

Section Uninstall
    DeleteRegKey ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}"

Answer 4

这通常通过让NSIS在安装时为您的产品插入注册表项来完成。然后，检测是否存在该注册表项是一种简单的方法，如果存在，则保释

检测程序是否已安装NSIS

4 个答案: