Detecting clicks on an html viewer

My app displays an html viewer which loads an external web page (that I have no control over) that in turn displays two buttons. I would like to know which button the user clicked. How would I go about that?

sorry for the duplicate, the forum software didn’t show the thread initially.

Hi Maximilian,

next time you get the red error message, access the forum home (forum.xojo.com) from another Tab / Window and watch if your thread appears or not, so you only have one entry.