QuickTime 3 Reference
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If your application creates QuickTime movies with video effects, you will want to provide the user with a way to choose an effect, adjust its parameters, and preview the results. Although you are free to write your own code for these user interface tasks, you are encouraged to use the APIs that QuickTime provides.
QuickTime provides a standard dialog box (called the standard parameters dialog box ) that allows the user to select an effect, choose values for its parameters, and preview the effect. Using this dialog box means that your users will see an interface that is standard across applications. In addition, if effects parameters change in the future, your application will not need to be rebuilt to use them.
In many applications, it is appropriate to simply show the standard parameters dialog box and let users choose and customize effects with it. QuickTime provides a set of high-level API functions that you can call to achieve this. "Displaying the Effects User Interface Using the High-Level API" takes you through the use of these high-level functions.
Sometimes you need greater control over the effects user interface. You might, for example, want to add the controls from the standard parameters dialog box to one of your application's own dialog boxes. QuickTime provides a set of low-level APIs that let you do this. They give you greater control and flexibility, but they are more complex to use than the high-level APIs. These low-level functions are discussed in "Adding Video Effects Controls to an Existing Dialog Box" .
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