View the tutorial for making this on Instructables! Information on the code (and modifying it) is in the wiki.
If you have a question or are having an issue, check to see if it is on the common issues wiki. If not, file a question.
For some reason, win32gui doesn't work in the latest version of python. However, it does work in older versions. As a solution, download Python 3.6, instead of the latest (see note). More information is in #4. NOTE: If you use Anaconda, create a Python 3.6 virtual envoirnment. Once you are using Python 3.6 (either from the Python website or from Anaconda), retry installing win32gui. If it doesn't work, let me know in issue #4.