Disclosure Statement: This site contains affiliate links, which means that I may receive a commission if you make a purchase using these links. As an eBay Partner, I earn from qualifying purchases.
If you find these projects useful please consider becoming a sponsor with Patreon, GitHub or Liberapay.
I haven't tried sending a dot but I just tested the SimpleOSRBRowser demo to see if there was a problem with that particular character and it worked fine.
Run that demo and log all the event information sent to the browser when you press that key. Use the TForm1.AppEventsMessage procedure to log all that information and you will get all the event parameters you need to use TChromium.SendKeyEvent