query_framegrabber ( : : : Names )

Query supported framegrabbers.

The operator query_framegrabber returns the names of the framegrabbers supported by HORUS on the current computer architecture. If a framegrabber turns up on this list it is not necessarily available at run time. This is only checked when trying to open a frame grabber via the operator open_framegrabber.


Attention

The result of the operator query_framegrabber depends on the type of machine (utilized computer architecture).


Parameters

Names (output_control)
string-array -> string
Framegrabbers supported by HORUS .


Result

The operator query_framegrabber normally returns the value TRUE. However, if the HORUS internal initialisation of the framegrabber data structures fails, an exception is raised.


Possible Successors

open_framegrabber


See also

open_framegrabber, info_framegrabber



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