I am learning to make apps for Elementary OS. I have a question, how do I make the HeaderBar invisible?
I mean how I can I make an app like Planner by Alainm.
As you can see in the picture, the headerbar is not visible. I tried out the Adwaita theme on this app using Gtk Inspector and then, the headerbar was visible. So I think that there is a headerbar in Planner too.
I want my application to look similar to planner with a side menu, and no headerbar. Any help would be appreciated.