NSIS添加环境变量

试运行这样

Section
SetShellVarContext current ; Used for demonstration purposes, it is the default context
DetailPrint $StartMenu
DetailPrint $SMPrograms
DetailPrint $Desktop
DetailPrint ---
SetShellVarContext all
DetailPrint $StartMenu
DetailPrint $SMPrograms
DetailPrint $Desktop
SectionEnd

，你应该得到这样的事情

C:UsersAndersAppDataRoamingMicrosoftWindowsStart Menu
C:UsersAndersAppDataRoamingMicrosoftWindowsStart MenuPrograms
C:UsersAndersDesktop
---
C:ProgramDataMicrosoftWindowsStart Menu
C:ProgramDataMicrosoftWindowsStart MenuPrograms
C:UsersPublicDesktop

设置环境变量：
!define hklm_all_users
'HKLM "SYSTEMCurrentControlSetControlSession ManagerEnvironment"'
!define hkcu_current_user
'HKCU "Environment"'
${If} $3 == HKLM
ReadRegStr $5 ${hklm_all_users} "Path" ; Get EnvVarName from all users into $5
${ElseIf} $3 == HKCU
ReadRegStr $5 ${hkcu_current_user} "PATH" ; Read EnvVarName from current user into $5
${EndIf}
${If} $3
== HKLM
WriteRegExpandStr ${hklm_all_users} "Path" $0
; Write it in all users section
${ElseIf} $3 == HKCU
WriteRegExpandStr ${hkcu_current_user} "PATH" $0
; Write it to current user section
${EndIf}
; "Export" our change
SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000

与RequestExecutionLevel user一个卸载程序将只能够在用户（目前的）情况下删除快捷方式，但该如果你的安装者首先在那里写它们，那么这不是问题。

NSIS不会自动删除快捷方式，你必须手动完成：

Section "Installer"
SetOutPath $InstDir
File "MyApp.exe"
WriteUninstaller "$InstDirUninst.exe"
CreateDirectory "$SMProgramsMyApp"
CreateShortcut "$SMProgramsMyAppMyApp.lnk"
CreateShortcut "$SMProgramsMyAppMyApp (No extensions).lnk" "-NoExt"
SectionEnd
Section "Uninstaller"
Delete "$SMProgramsMyAppMyApp.lnk"
Delete "$SMProgramsMyAppMyApp (No extensions).lnk"
RMDir "$SMProgramsMyApp"
Delete "$InstDirMyApp.exe"
Delete "$InstDirUninst.exe"
RMDir "$InstDir"
SectionEnd 

最后

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