Mac OS For QuickTime Programmers

Miscellaneous Component Functions

The following functions are used for for retrieving component errors, working with component reference constants, accessing a component's resource file, calling other components, capturing components, targeting a component instance, and changing the default search order for components.

SetComponentInstanceError procedure lets a component pass error information to the Component Manager other than through its return value.
SetComponentRefcon procedure sets the reference constant for a component.
GetComponentRefcon retrieves the value of the reference constant for your component.
OpenComponentResFile allows your component to gain access to its resource file.
CloseComponentResFile closes the resource file that your component opened previously with the OpenComponentResFile function.
DelegateComponentCall provides an efficient mechanism for passing on requests to a specified component.
CaptureComponent allows your component to capture another component.
UncaptureComponent lets a component uncapture a previously captured component.
ComponentSetTarget calls a component's target request routine, which handles the kComponentTargetSelect request code.
SetDefaultComponent lets a component change the search order for registered components.