Dear `Peter, Michael, list, Thanks for your responses. I have now tried both suggestions (of using the "after" command, and Sys.sleep() within a loop). from my preliminary expts, it seems that both methods do what I want. The "after" first method also seems to have the advantage of not blocking the R prompt while the movie is playing.
For the archives (and for others if interested) I'll send my test script tomorrow to the list. Best wishes, Stephen > I admit I am not familiar with the tcltk package, but it sounds to me that > you want to yield to the GUI event loop and check whether the stop button > has been pressed. Calling Sys.sleep(1) in the loop will allow the button > handler to be called. Just have it set some flag that lets you break out of > the loop. _______________________________________________ R-SIG-GUI mailing list R-SIG-GUI@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-gui
