## ŒEV Event Record

(Not implemented in APLX Server Editions)

Each callback property you can set corresponds to an APLX event. Just before your callback is called, the niladic system function ŒEV is set to contain the event record, which gives further information about the event which is being reported. ŒEV is an integer vector of length 9. The first five elements are common to all events, and the remaining four depend on the event type.

The elements of ŒEV which are always supplied irrespective of the event type are (in index origin 1):

            ŒEV[1]         Object tie number (the same as the tie property of the
                           object)
            ŒEV[2]         Event type number
            ŒEV[3]         System clock time of event in milliseconds
            ŒEV[4]         Mouse vertical position (in pixels) when event occurred
            ŒEV[5]         Mouse horizontal position (in pixels) when event occurred

The remaining elements depend on the specific event type.

Topic: APLX Help : Help on APL language : System Functions & Variables : ŒEV Event record

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