Close running version of program before installing update (Inno Setup)

Question

This should be simple, I need to stop any previous version of my program from running when the installer starts.

Most people suggested making an exe wh

Answer 1

I tried using the accepted answer (and the follow up by jachguate) but it wouldn't kill my application. It looks like part of the reason was that my application window had no text associated with it but whatever is the real reason, I used shell command to kill it and that worked. In the [code] section, you want to add the following function. It is called just before setup files are copied.

function PrepareToInstall(var NeedsRestart: Boolean): String;
var
ErrorCode: Integer;
begin
      ShellExec('open',  'taskkill.exe', '/f /im MyProg.exe','',SW_HIDE,ewNoWait,ErrorCode);
end;