I'm wanting to place a button over an image to have a hotspot and when rolled over or clicked, a popup of small copy would appear. Is there a way to do this in InDesign for an Interactive PDF? I was able to create the circle button and have it connected to the copy box that I made a different button. I then hid the copy in the frame. However, when I preview I have to rollover the invisible box for it to pop up.
There is a feature in interactive PDF called Show/Hide fields which may or may not give you what you want. You can create a button of an image or other object which will make another object (button) appear. Do a Google search on "Show Hide Field InDesign Tutorial"