How do you make a pop-up window appear upon button press?

Yep, please define pop up in a bit more detail, i might be able to help also.

Here is what I've done in a couple projects:

1.  Create a smartshape (i.e., rounded rectangle) and put your desired text within this shape.  In the properties tab check "use as a button" and uncheck "visible in output."  In your "on success" action, set it to Hide > Smartshape you just created.  This essentially sets up a pop up window that acts as a button to hide itself when you're done.  I usually place an "X" up in the corner to indicate that you can close the window by clicking on it.

2.  Set your button up that you want to show the pop-up, by assigning it an "on success" action to Show > Smartshape from #1 above.  This button will show the smartshape.. the smartshape itself will hide itself.

Or.. look at examples others have posted about doing conditional actions to show/hide objects.

Choose "javascript" from the options (if you're using advanced actions, use the "current" window).  Then type:

alert('your message here');

Note that the javascript seems to run a bit slowly.

You could also have it jump to another slide (or another website) depending on what type of pop-up window you mean.

Hello,

Welcome to Adobe Forums.

What do you need in that pop-up window, do you need an alert message or a URL ?

Thanks,

Vikram

Adobe Support