Question

目前，我有以下脚本代码。

Section "Uninstall"
...
...
Call un.DeleteDirIfEmpty 
SectionEnd


Function GetJRE
    ; Call must not be used with functions starting with "un." in the non-uninstall sections.
    Call
FunctionEnd


Function un.DeleteDirIfEmpty
...
...
FunctionEnd

Function DeleteDirIfEmpty
...
...
FunctionEnd

请注意，我需要提供2个版本的DeleteDirIfEmpty，以便在非卸载部分和卸载部分中执行相同的操作。

他们的代码是一样的，只是命名不同。 un.DeleteDirIfEmpty和DeleteDirIfEmpty

如何只有1个函数，但是可以被任何部分调用吗？

Answer 1

看看\ Include \ Util.nsh，它用于将宏转换为函数：

!include Util.nsh

!macro MyFunction
MessageBox mb_ok "Hello World"
!macroend
!define MyFunction "${CallArtificialFunction} MyFunction"

Section
${MyFunction}
SectionEnd

注意：要删除空目录，只需使用RMDir（无/ r开关）

Answer 2

这link也让我明白了。它提供了一个示例，说明如何在安装程序和卸载程序之间共享功能。比如，你有一个应该被共享的函数myfunc，然后你创建一个宏来从卸载程序中调用它。引用链接：

; Name of our installer.
Name "Function Sharing Example"
OutFile "FunctionShareExample.exe"
InstallDir "$PROGRAMFILES\Function Sharing Example\"

; We need some pages.
Page directory
Page instfiles
; And uninstaller pages.
UninstPage uninstconfirm
UninstPage instfiles

; Show the details.
ShowInstDetails show
ShowUninstDetails show

; ******************* The shared function. *******************
!macro MYMACRO un
  Function ${un}myfunc
    MessageBox MB_OK "This is the function ${un}myfunc."
    DetailPrint "Very ${un}funny text."
    DetailPrint "More ${un}funny text."
  FunctionEnd
!macroend

; Insert function as an installer and uninstaller function.
!insertmacro MYMACRO ""
!insertmacro MYMACRO "un."

Section "Install"
  ; ******************* Call the installer function. *******************
  Call myfunc

  SetOutPath "$INSTDIR"
  ; Write an uninstaller.
  WriteUninstaller "$INSTDIR\uninstall.exe"
  ShowWindow $HWNDPARENT 6
  ; Show the install directory, so you can run the uninstaller straight away.
  ExecShell open "$INSTDIR"
  Sleep 1000
  ShowWindow $HWNDPARENT 9
SectionEnd

Section "Uninstall"
  ; ******************* Call the un.installer function. *******************
  Call un.myfunc

  ; Clean up install directory (delete it).
  Delete "$INSTDIR\uninstall.exe"
  RMDir "$INSTDIR"
SectionEnd

避免在NSIS中重复的功能代码

2 个答案: