Force Inno Setup to show UAC prompt during installation

Question

How can I force Inno Setup to show UAC prompt if elevated privileges are required to run specific installator during my setup? Skipping to install this installator is not critical. I found out that I can specify AfterInstall function to test if privilege elevation is required (IsAdminLoggedOn()), but how to show UAC prompt to run this installator as specific user?

Answer 1

Found the solution. So, if you need to run specific installator with elevated privileges during your setup you need:

1. Specify your installator in Files section as follows:

   [Files]
   Source: "SomeSetup.exe"; DestDir: "{tmp}"; AfterInstall: SomeSetupAfterInstall()
   

2. In Code section you shall define SomeSetupAfterInstall(). There you should run your installator with runas verb using ShellExec if it is not admin launched setup. It might be like this:

   procedure SomeSetupAfterInstall();
   var
       ErrorCode: Integer;
       TmpPath: String;
       RunMethod: String;
   begin
       TmpPath:=ExpandConstant('{tmp}');
       if not IsAdminLoggedOn() then
       begin
           RunMethod := 'runas';
       end else
       begin
           RunMethod := '';
       end;
       ShellExec (RunMethod, TmpPath + '\SomeSetup.exe', '', '', 
                  SW_SHOW,  ewWaitUntilTerminated, ErrorCode);
   end;