AutoIt v3 comes with a standalone tool called the AutoIt Window Info Tool (Program Files\AutoIt3\AU3Info.exe). AU3Info allows you to get information from a specified window that can be used to effectively automate it. Information that can be obtained includes:
When AU3Info is running you may want to copy text directly from it using CTRL-C and then paste it into your script to avoid spelling/case errors. This can be difficult when you want to capture pixel/mouse information as it keeps changing! To help with this you can "freeze" the output of AU3Info by pressing CTRL-ALT-F. Press the keys again to "unfreeze".