Purpose
Wait
for events of particular classes.
Synopsis
procedure waitfor(mask:integer)
procedure waitfor(mask:integer,dur:integer)
Arguments
|
dur
|
A duration in seconds
|
|
mask
|
Bit mask of expected events
|
Further information
1.
This procedure suspends the execution of the caller until
an event of a particular class is available. The second form
specifies a time limit: the processing is suspended for at
most dur seconds.
2.
The parameter
mask is interpreted as a bit mask
to select the expected events: all events sent to the model
are automatically dropped until an event
ev satisfies the
following condition:
bittest(getclass(ev),mask)<>0
Related topics
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