close_all_framegrabbers — This operator is inoperable. It had the following function:
Close all image acquisition devices.
close_all_framegrabbers is obsolete, inoperable, and is only
provided for reasons of backward compatibility. New applications should not
close_all_framegrabbers, the operator will be removed in future
close_all_framegrabbers( : : : )
close_all_framegrabbers exists solely for the purpose of
implementing the “reset program” functionality in HDevelop.
close_all_framegrabbers must not be used in any
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.
If it is possible to close all image acquisition devices, the operator
close_all_framegrabbers returns the value 2 (H_MSG_TRUE). Otherwise an
exception is raised.