User`s guide

Event Types

Events and Callback Function Properties (Continued)

Event Callback Proper ty D es cription

Start

StartFcn

The toolbox generates a start event when an object

is started. You use the

start function to start an

object.

When a start event occurs, the toolbox executes the

function specified by the

StartFcn property.

Note The Sta rtFc n callback executes

synchronously. If you specify a

StartFcn callback

function, the toolbox waits for the function to finish

executing before performing any other processing. If

an error occurs in the start callback function, the

object never starts.

Stop

StopFcn

The toolbox generates a stop event when the object

stops running. An object stops running when the

stop function is called, the specified number of

frames is acquired, or a run-time error occurs.

When a stop event occurs, the toolbox executes the

function specified by the

StopFcn property.

Note The StopFcn callback e xecutes synchronously.

If you specify a

StopFcn callback function, the

toolbox waits for the function to finish executing

before performing any other processing.

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