MACROMEDIA FLEX-GETTING STARTED WITH FLEX Manual do Utilizador descarregar pdf (Página 115)

</mx:Canvas>

<mx:HBox>

<mx:Button id="btnPlay" label="Pause" click="onPlay()" />

<mx:Button label="Rewind" click="{cntlDisp.playheadTime =

0;}" />

</mx:HBox>

</mx:Application>

The UpdateUI

method monitors the position of the play head

and then shows or hides the overlay text depending on where

the movie is in its playback. The overlay itself has a black back-

ground with an alpha so that you can still see the video through

the overlay (see Figure 6-11).

Using the powerful states and transitions in Flex, you could

easily have the cue pop out from below the video and then

recede when the cue is no longer applicable.

Figure 6-11. A cue overlaid on top of the video display

Creating Better Movies | 99

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