Hit at location on the widget as if it were a mouse click

I am creating an App for an operating system that does not have a cursor and my project has a WebBrowser widget, but it is not possible to interact with the keyboard between the buttons of the web page within the webBrowser, so as also on this platform there is no mouse or cursor, I found that if I position the cursor at a point on the page and press enter I can interact with the page, so if I use the enter key on this platform that has the same remote control command I can, then in my project create a fancy cursor that is moved by the arrows on the remote control and finally when I press OK (Enter) on this remote control, I can click on the buttons on the web page.

Help, I don’t know how to do this.