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ADC Home > Reference Library > Reference > Apple Applications > Final Cut Pro/Final Cut Express > FxPlug Reference
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FxCustomParameterViewHost |
| Declared In: |
Defines the methods a plug-in needs to implement to associate a custom NSView with one of its parameters.
An FxPlug that wants to present custom UI for one or more of its parameters must conform to the FxCustomParmeterViewHost protocol. This protocol allows the plug-in to provide a subclass of NSView. It is up to the plug-in to handle NSEvents in its custom view(s). When an event in a custom view necessitates a change to the value of the associated parameter, the plug-in then uses methods in the host API FxCustomParameterActionAPI to tell the host application to change the parameter value.
createViewForParm: |
Provides an NSView to be associated with the given parameter.
- (NSView *)createViewForParm:(UInt32)parmId;
parmId An NSView or subclass of NSView.
This plug-in method is called by the host application during the parameter-list
setup sequence, once for each plug-in parameter that has the
kFxParameterFlag_CUSTOM_UI parameter flag set. The view may be created dynamically,
or, more commonly, retrieved from a NIB file in the plug-in's resources directory.
NOTE: The object returned by this method should not be autoreleased. It should be
allocated by the method, and will be released by the caller. The implementation
may look something like this:
if ( parmId == kMyViewParmID )
return [[MyView alloc] init];
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