Adding Video Effects Controls to an Existing Dialog Box

In most circumstances, it is best to use the high-level functions to create a user interface for video effects. However, if you need finer control over the way the interface is presented, QuickTime provides a set of low-level API functions to assist you.

For example, you may want to incorporate the controls from the standard parameters dialog box into an existing dialog box that your application displays, rather than using a completely independent dialog box. This would be necessary if you wanted a single dialog box that allowed users to customize an effect and also specify its duration. To do this, you would create a dialog box with a control for the duration of the effect and then, at runtime, you would add the customization controls from the standard parameters dialog box by calling the function ImageCodecCreateStandardParameterDialog .

Note
The low-level APIs follow the same naming convention as their high-level counterparts, except that the low-level versions begin with ImageCodec, whereas the high-level versions begin with QT .

Creating Your Application's Dialog Box

Incorporating Controls From the Standard Parameters Dialog Box

Adding a Preview to Your Dialog Box

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© 1999 Apple Computer, Inc.

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