Channel devices allow the channel component to control the digitizing equipment. For example, video channels use video digitizer components, and sound channels use sound input drivers.
This class lets you inspect the property of a device associated to a
→
The QTPlgChannelDevice class constructors are called when you create a new instance of the class, while the ˜QTPlgChannelDevice class destructor, is called automatically when the class is no more in use. Also, you can invoke the class destructor by setting the instance of the class to nil.
Once a new class instance is returned, it is good practice to check the class property to be sure that the new object can be used. You will obtain valid instances of this class only from the property of the class.
The class provides you with the following initializer methods:
(other as QTPlgChannelDevice)
This is the copy constructor. The properties of the object to be copied will be used to initialize the
new class instance properties
indicates if the device is currently available
indicates if the device shows its input sources as devices themselves
the list of sequence grabber devices. For devices of type
, the list will contain
objects
requires QuickTime 6 or later
the list of sequence grabber output devices; this property returns a valid list only for instances of the
class; this being the case, the list will be populated with
objects