Re: Fast Forward and backward about QuickTime movie

2009-04-22 Thread douglas welton
According to the documentation for QTMovie, setting the playback rate using the -setRate: is rather straightforward. As for getting the button's state to align with playback, I would probably subclass the button, overriding -mouseUp: and -mouseDown: as appropriate. On Apr 21, 2009, at 11:0

Fast Forward and backward about QuickTime movie

2009-04-21 Thread Bright
Hi douglas, thank you for your help. Now I expect that the speed is fast when user press the button and the speed is normal when user unfasten the button. I am a fresh man,ha. I don't know how to do this. Could you tell more detail?thank you! 2009-04-21,"douglas welton" >To implement

Re: Fast Forward and backward about QuickTime movie

2009-04-21 Thread douglas welton
To implement a fast (scan) forward or backward, simply set the movie's playback rate to a value greater than 1.0 ( or -1.0 for going backward). You'll want to experiment with want looks best for you, but a typical value might be 2.0, 4.0, 8.0... you get the picture. Depending on how you wa

Re: Fast Forward and backward about QuickTime movie

2009-04-21 Thread Mike Abdullah
Search the archives; this has come up quite a bit. -[QTMovie setRate:] On 21 Apr 2009, at 15:39, Bright wrote: Hi, By using the "-stepForward:" and the "-stepBackward:" methods of the QTMovie class, I realized the forward/backward a frame when I click the corresponding buttons. But my purpo

Fast Forward and backward about QuickTime movie

2009-04-21 Thread Bright
Hi, By using the "-stepForward:" and the "-stepBackward:" methods of the QTMovie class, I realized the forward/backward a frame when I click the corresponding buttons. But my purpose is to implement fast forward and fast backward when I press the corresponding buttons for a while. The result