Inside Macintosh: QuickTime Components /

Chapter 12 - Preview Components / Preview Components Reference

Functions / Handling Events

PreviewEvent

If your preview component handles events, the PreviewEvent function is called as appropriate.

pascal ComponentResult PreviewEvent (pnotComponent p, 
                                     EventRecord *e,
                                     Boolean *handledEvent);

p

Specifies your preview component. You obtain this identifier from
the Component Manager's OpenComponent function. See the chapter "Component Manager" in Inside Macintosh: More Macintosh Toolbox for details.

e

Contains a pointer to the event structure for this operation.

handledEvent

Contains a pointer to a Boolean value. If you completely handle an event such as a mouse-down event or keystroke, you should set the handledEvent parameter to true. Otherwise, set it to false.