NSIS判断是否以管理员权限运行源码

wangsg

本篇文章属于《518抽奖软件开发日志》系列文章的一部分。

我在开发《518抽奖软件》（www.518cj.net）的时候，NSIS安装包脚本里，需要判断当前是否管理员权限运行，代码如下。

1. Function IsUserAdmin
   
2. Push $R0
   
3. Push $R1
   
4. Push $R2
   
5. 
   
6. ClearErrors
   
7. UserInfo::GetName
   
8. IfErrors Win9x
   
9. Pop $R1
   
10. UserInfo::GetAccountType
    
11. Pop $R2
    
12. 
    
13. StrCmp $R2 "Admin" 0 Continue
    
14. ; Observation: I get here when running Win98SE. (Lilla)
    
15. ; The functions UserInfo.dll looks for are there on Win98 too,
    
16. ; but just don't work. So UserInfo.dll, knowing that admin isn't required
    
17. ; on Win98, returns admin anyway. (per kichik)
    
18. ; MessageBox MB_OK 'User "$R1" is in the Administrators group'
    
19. StrCpy $R0 "true"
    
20. Goto Done
    
21. 
    
22. Continue:
    
23. ; You should still check for an empty string because the functions
    
24. ; UserInfo.dll looks for may not be present on Windows 95. (per kichik)
    
25. StrCmp $R2 "" Win9x
    
26. StrCpy $R0 "false"
    
27. ;MessageBox MB_OK 'User "$R1" is in the "$R2" group'
    
28. Goto Done
    
29. 
    
30. Win9x:
    
31. ; comment/message below is by UserInfo.nsi author:
    
32. ; This one means you don't need to care about admin or
    
33. ; not admin because Windows 9x doesn't either
    
34. ;MessageBox MB_OK "Error! This DLL can't run under Windows 9x!"
    
35. StrCpy $R0 "true"
    
36. 
    
37. Done:
    
38. ;MessageBox MB_OK 'User= "$R1"  AccountType= "$R2"  IsUserAdmin= "$R0"'
    
39. 
    
40. Pop $R2
    
41. Pop $R1
    
42. Exch $R0
    
43. FunctionEnd
    

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