问题
Is it possible to have the feature in the image inside Google Calendar. I came across Gadget in Google Calendar, but I cannot figure out how to do it. Is there any way Google is allowing to add add-ons for calendar?
回答1:
This is not possible. What you can do is create your own interface/client-side UI and then use the Calendar API to perform operations. You can also give the Calendar Apps Script if it suits your purpose.
来源：https://stackoverflow.com/questions/48787956/how-to-add-a-custom-button-inside-google-calendar