This class lets you to deal with the video channels created with the the appropriate of the class.
→ → →
The QTPlgChannelVideo class constructors are called when you create a new instance of the class, while the ˜QTPlgChannelVideo 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 list of the class.
The class provides you with the following initializer methods:
(other as QTPlgChannelVideo)
This is the copy constructor. The properties of the object to be copied will be used to initialize the
new class instance properties
specifies how to display data collected by the channel. The following
of the
class affect the display of data:
- : specifies the portion of the source video image that is to be captured
- : specifies the channel’s display boundary rectangle
- : specifies the channel’s clipping region (using the class method forces the clipping of the video stream to theÊ rectangle)
- : modifies the channel’s matrix
- : modifies the channel’s matrix
- : modifies the channel’s matrix
- : modifies the channel’s matrix
this property allows you wether to retrieve informations about the channel configuration or modify it programmatically.
The following
of the
class affect the channel configuration:
specifies the video digitizer associated to the video channel