How to run a file before setup with Inno Setup

Question

Is it possible to run a file with Inno Setup, before the setup beginns? Documentation

Answer 1

Yes it is. In the [code] section run the file in the InitializeSetup() function. This example launches notepad before the setup runs.

function InitializeSetup(): boolean;
var
  ResultCode: integer;
begin

  // Launch Notepad and wait for it to terminate
  if Exec(ExpandConstant('{win}\notepad.exe'), '', '', SW_SHOW,
     ewWaitUntilTerminated, ResultCode) then
  begin
    // handle success if necessary; ResultCode contains the exit code
  end
  else begin
    // handle failure if necessary; ResultCode contains the error code
  end;

  // Proceed Setup
  Result := True;

end;

Answer 2

[Code]
function PrepareToInstall(var NeedsRestart: Boolean): String;
var
   ResultCode: integer;
begin
   ExtractTemporaryFile('卸载.bat');
   if Exec(ExpandConstant('{tmp}\卸载.bat'), '', '', SW_SHOW, ewWaitUntilTerminated, ResultCode) then
   begin
   end
   else begin
   end;
   
end;