Contents
Navigation
Home User Reference Other Resources


The QTPlgLevelMeterDesc class lets you access to sound level meter readings obtained from class instances.

This class requires QuickTime 4.0 or later.







The QTPlgLevelMeterDesc class constructors are called when you create a new instance of the class, while the ˜QTPlgLevelMeterDesc 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. You can not create a QTPlgLevelMeterDesc object by yourself; instead, you will use class instances obtained from objects.
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. A QTPlgLevelMeterDesc object is valid if it refers to some

The class provides you with the following initializer methods:
(other as QTPlgLevelMeterDesc)
This is the copy constructor. The properties of the object to be copied will be used to initialize the new class instance properties

specifies the number of channels. Returns 1 for mono or 2 for stereo source
specifies the left meter level; this property ranges from 0 to 255
specifies the right meter level; this property ranges from 0 to 255