making a subapp bg transparent?

[mobichan]

I was trying to use a subapp for an npc dialogue box. Since I want the shape of the box to be irregular, I was hoping to make the background of the subapp transparent. Is this possible?

[RayMarble]

Window Shape Objects allows you to use standard shapes like circles, a predefined set of pictures or even an active object as a mask for the frame.

It's a bit silly though in the sense that if you resize your application window (say 2* the original resolution) the mask doesn't follow no matter what, I was told it's "by design". Also it has some glitches that prevented me from using it for my project but maybe it'll work for you.

[mobichan]

Thanks. That seems to be exactly what I needed.