close_framegrabber — Close specified image acquisition device.
close_framegrabber( : : AcqHandle : )
close_framegrabber closes the image acquisition device
AcqHandle. In particular, allocated memory for data
buffers is released and the image acquisition device is made available for
For a multithreaded application all image acquisition operators
(as listed in
an own group in which
close_all_framegrabbers block the
concurrent execution of all other operators within this group, but run in
parallel with all non-exclusive operators outside of this group.
This operator modifies the state of the following input parameter:
During execution of this operator, access to the value of this parameter must be synchronized if it is used across multiple threads.
AcqHandle(input_control, state is modified) framegrabber
Handle of the image acquisition device to be closed.
If the specified image acquisition device could be closed,
close_framegrabber returns the value 2 (H_MSG_TRUE).
Otherwise an exception is raised.