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QCCompositionParameterViewDelegate Protocol Reference

(informal protocol)

Overview

The QCCompositionParameterViewDelegate informal protocol allows your application it define which parameters should be visible in a QCCompositionParameterView object.

Tasks

Responding to Composition Selections

• – compositionParameterView:shouldDisplayParameterWithKey:attributes:

Instance Methods

compositionParameterView:shouldDisplayParameterWithKey:attributes:

Allows you to define which composition parameters are visible in the user interface when the composition parameter view refreshes.

- (BOOL) compositionParameterView:(QCCompositionParameterView *)parameterView shouldDisplayParameterWithKey:(NSString *)portKey attributes:(NSDictionary *)portAttributes;

Parameters

parameterView

The composition parameter view in which the selection changed.

portKey

A key for one of the composition parameters, which is provided to you by the Quartz Composer engine.

portAttributes

A dictionary of the attributes that you want to display in the user interface.

Return Value

YES if port attributes should be displayed; NO otherwise.

Availability

• Available in Mac OS X v10.5 and later.

Declared In

QCCompositionParameterView.h

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