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Event mode is used to run Vispatch programs. Selecting the second tool button
places the applet in event mode. Thereafter, all mouse actions on the
Vispatch document are treated as events and are processed according to the
Vispatch program on the document. Some programs can take a long time to terminate. Once a Vispatch program is running, any user event will stop it. For example, the Vispatch program below can take some time to draw a complete tree with a fan-out of 5 branches. Trying making a moderate size tree, and then pressing the spacebar before the tree is completed. Drawing of the tree should stop soon. Clicking on the document or any of the tool buttons also stops a running Vispatch program. |