Kevin,
I know you had looked at this before. I was looking into this problem for about 30 minutes this afternoon and I also came up blank. Please let me know if you find anything.
I have not yet made up my mind if I will display the close button in the control or not. I am going pretty much the same route as you, with my own close button or just make the user use the window close button (way up in the right corner).
I guess the main purpose for capturing the close button click is that I also want to capture some of the other button clicks.

Einar
>Hey, Einar,
>
>This is really strange. I gave this another try and still came up blank.
>
>There seems to be something called "CloseView" that shows up in Intellisense for the viewer, but doesn't show in the property sheet. I created a test to see if that would fire, but it didn't work.
>
>I checked through their KB site, and couldn't find anything. I'll try again with some different keyword searches. Again, I always drop my own close button on the preview form (I don't like the appearance or the placement of their close button), but I'm surprised that nothing happens when I click on their close button. Sorry I don't have an answer.
>
>Kevin