NSIS 读取注册表版本号

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1. name "NSISDemo"
   
2. outfile 'NSISDemo.exe'
   
3. Section "NSISDemo"
   
4. 
   
5. ReadRegStr $R0 HKLM SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\TTPlayer "DisplayVersion"
   
6. 
   
7. IntCmp $R0 "5.0" is5 lessthan5 morethan5
   
8. 
   
9. 
   
10. is5:
    
11. DetailPrint "$R0 == 5.0"
    
12. Goto int
    
13. lessthan5:
    
14. DetailPrint "$R0 < 5.0"
    
15. Goto error2
    
16. morethan5:
    
17. DetailPrint "$R0 > 5.0"
    
18. Goto error1
    
19. int:
    
20. MessageBox MB_OK "你系统中现有版本为$R0，点击OK安装更新" IDOK
    
21. DetailPrint "安装版本为: $R0"
    
22. goto done
    
23. error1:
    
24. MessageBox MB_ICONSTOP|MB_OK "你系统中版本$R0高于更新版本" IDOK
    
25. error2:
    
26. MessageBox MB_ICONSTOP|MB_OK "你系统中版本$R0低于更新版本" IDOK
    
27. 
    
28. done:
    
29. SectionEnd

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