[Lord.Freddy]

Originally Posted by Gehrman

Thanks Lord Freddy
But it doesn't work.

if IsComponentSelected('Patch') then 
var
  ResultCode: Integer;
begin
  // Launch EXE file and wait for it to terminate
  Exec(ExpandConstant('{tmp}\Patch.exe'), ExpandConstant('/Dir={app}'), '', SW_SHOW,ewWaitUntilTerminated, ResultCode);
end;

I think this is work for you now