close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers (Operator)
Name
close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers — This operator is inoperable. It had the following function:
Close all image acquisition devices.
Warning
close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers is obsolete, inoperable, and is only
provided for reasons of backward compatibility. New applications should not
use close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers, the operator will be removed in future
versions.
Signature
close_all_framegrabbers( : : : )
Herror close_all_framegrabbers()
Herror T_close_all_framegrabbers()
void CloseAllFramegrabbers()
static void HMisc::CloseAllFramegrabbers()
static void HOperatorSet.CloseAllFramegrabbers()
static void HMisc.CloseAllFramegrabbers()
def close_all_framegrabbers() -> None
Description
.
Attention
close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers exists solely for the purpose of
implementing the “reset program” functionality in HDevelop.
close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers must not be used in any
application.
For a multithreaded application all image acquisition operators
(as listed in open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber) are
an own group in which info_framegrabberinfo_framegrabberInfoFramegrabberInfoFramegrabberInfoFramegrabberinfo_framegrabber, open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber,
close_framegrabberclose_framegrabberCloseFramegrabberCloseFramegrabberCloseFramegrabberclose_framegrabber and close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers are
executed exclusively.
Thus, info_framegrabberinfo_framegrabberInfoFramegrabberInfoFramegrabberInfoFramegrabberinfo_framegrabber, open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber,
close_framegrabberclose_framegrabberCloseFramegrabberCloseFramegrabberCloseFramegrabberclose_framegrabber and close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_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.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Result
If it is possible to close all image acquisition devices, the operator
close_all_framegrabbersclose_all_framegrabbersCloseAllFramegrabbersCloseAllFramegrabbersCloseAllFramegrabbersclose_all_framegrabbers returns the value 2 (H_MSG_TRUE). Otherwise an
exception is raised.
Module
Foundation