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What Events Are

If Lingo didn't exist, Director would play your movies, starting at frame 1, and continue until the end unless some instruction in the tempo channel intervened, such as an instruction to wait for a mouse click. The Script Editor, Behavior Inspector, and Library Palette all would not exist, so you could not use behaviors to add interactivity and other features. The display of your movies would be essentially linear.

Of course, Director is capable of much more than just linear play. Games, training software, presentations, and much more have been written with Director, and most of these applications use interactivity, branching, and other types of nonlinear execution achieved using Lingo scripts that respond to events. Nearly everything that occurs in a Director movie is an event, and as a Director movie plays, Director issues notifications internally that specific events have occurred. These notifications are called messages. When the user presses the mouse button, for example, that is a mouseDown event, and Director responds by sending a mouseDown message.


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