Components A sequence grabber panel component creates a settings dialog box, which has settings that affect the behavior of a channel component. For example, a dialog might let the user control the frame capture rate of a video digitizer and the image quality of an image compressor. The user settings dialog box can be customized to include any required options by creating a new component. Sequence grabber panel components are never called directly by an application.
Application developers use panel components by calling the sequence grabber component.
The sequence grabber component uses a panel component to obtain user preferences for configuration of channel components. Only developers planning to create panel components need to read this chapter. About Sequence Grabber Panel Components Inside Macintosh describes what sequence grabber panel components are, and how they are used. A diagram shows the relationship between an application, a sequence grabber component, panel components, channel components, and lower-level software and hardware. Most developers will find this of interest.