!macro NSIS_HOOK_POSTINSTALL
  # 1. 先确保主程序已释放
  IfFileExists "$INSTDIR\ExamStudent.exe" +3
    Abort

  # 2. 检查.NET
  ReadRegStr $0 HKLM "SOFTWARE\Microsoft\NET Framework Setup\NDP\v8.0" "Release"
  IntCmp $0 0 no_dotnet dotnet_installed no_dotnet
  
  no_dotnet:
    # 3. 防止安装程序提前退出
    SetAutoClose false
    BringToFront
    
    # 去除弹窗
    # MessageBox MB_OK|MB_ICONINFORMATION "需安装.NET 8.0"
    
    # 4. 保持您的原始路径写法
    InitPluginsDir
    SetOutPath "$PLUGINSDIR"
    File "${__FILEDIR__}\..\..\windowsdesktop-runtime-8.0.16-win-x64.exe"
    
    # 5. 添加错误处理
    ExecWait '"$PLUGINSDIR\windowsdesktop-runtime-8.0.16-win-x64.exe" /install /quiet /norestart' $0
    ${If} $0 != 0
      # 去除弹窗
      # MessageBox MB_ICONSTOP|MB_OK ".NET安装失败，错误码: $0"
      Abort
    ${EndIf}
    
    Delete "$PLUGINSDIR\windowsdesktop-runtime-8.0.16-win-x64.exe"
    SetAutoClose true

  dotnet_installed:

!macroend