And, once again, if you have the box checked to close the progress dialog when rendering is finished, this isn't an issue. When that dialog disappears the render is done; if the dialog is still there, it's still rendering. Kinda clears up the confusion completely.

which is why I say, if you have kids/others in the area, lock/password the machine anyway. Nothing puts a :( on your face more then finding out the 10 hour render didn't finish when you woke up, someone "accidentally" canceled it because they wanted to do something else with the machine.

I'd also add, that apparently quite a few of you are too lazy to grab your reading glasses or you would've realized that the 'Cancel' disappears when it's really done.
How long have you all been rendering?

Render, Schmender, for God's sake. It's the 21st century and AI is still a long ways off, even in Final Cut Pro! Darryl

Perhaps a little push pin or lock button could be on the dialog box that would gray out the cancel until released or unlocked. That way only the people who have "learned the hard way" to look before they click, could lock the dialog down until render is complete.

What's so hard about it? If there is a "Cancel" button on the screen, don't be dumb enough to hit it! Why on earth would you want to unless you really want to cancel the render?

I agree with people who say that Windows really don't need any more warning windows. At the moment they are a security hazard. You get them so often you hit OK on automatic. Even when you shouldn't. Adding yet another warning to a windows app to assist people who apparently should not operate such advanced machinery (please put your humor pants on) will make Windows and applications less useful and less secure for those of us who actually understand that hitting a button that says "Cancel" is, invariably, going to cancel something.

If you are afraid of hitting it by accident when clicking around your windows desktop, just minimize Vegas while rendering. Then you have to maximize Vegas AND hit the Cancel button. If you still manage to cancel a render by accident you should probably consider doing something else for a living/as a hobby.