Inno Setup Uninstall the original program before installing

Inno Setup Uninstall the original program before installingCategory: Install Setup 2013-02-02 15:53 2315 People read comments (0) favorite reports

Many times we need to unload the original program before installing it, rather than covering it, the code in this article is the function.

The principle is: read the unloading information from the Register ' uninstallstring ' and use Exec to unload it.

The following code in app_name for your program name, you can go to the register to confirm.

1 function Initializesetup (): boolean;2 var3 resultstr:string;4 Resultcode:integer;5 begin6 ifRegquerystringvalue (HKLM,'Software\microsoft\windows\currentversion\uninstall\app_name_is1','uninstallstring', ResultStr) Then7 begin8ResultStr: =removequotes (RESULTSTR);9Exec (ResultStr,'/silent',"', Sw_hide, ewwaituntilterminated, ResultCode);Ten end; OneResult: =true; AEnd

Inno Setup Uninstall the original program before installing