© 2013 Thorlabs GmbH
4 Programming (SDK)
355
4.3.101 is_WaitEvent
Syntax
INT is_WaitEvent (HIDS hCam, INT which, INT nTimeout)
Description
is_WaitEvent() allows waiting for uc480 events. The function indicates successful execution when the event
has occurred within the specified timeout.
Input parameters
ID of the event (see is_EnableEvent() )
Time (in ms) that the function will wait for an event to
occur.
Using the constant INFINITE you can set the time for
the timeout to infinity.
Return values
Function executed successfully
A timeout occurred. An image capturing process could
not be terminated within the allowable period.
That means the specified timeout expired without the
event having occurred.
Related functions
is_EnableEvent()
is_DisableEvent()
Example
//Activate and initialize FRAME event
is_EnableEvent(hCam, IS_SET_EVENT_FRAME);
//Start image capture and wait 1000 ms for event to occur
is_FreezeVideo(hCam, IS_DONT_WAIT);
INT nRet = is_WaitEvent(hCam, IS_SET_EVENT_FRAME, 1000);
if (nRet == IS_TIMED_OUT)
{
/* wait timed out */
}
else if (nRet == IS_SUCCESS)
{
/* event signalled */
}
is_DisableEvent(hCam, IS_SET_EVENT_FRAME);
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