qtcallback.html

这个是java的quicktime for java 的详细使用文档

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve a callback's event type.</TD>
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<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../quicktime/std/clocks/QTCallBack.html#toString()">toString</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A String representation of the class.</TD>
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<TD><B>Methods inherited from class quicktime.<A HREF="../../../quicktime/QTObject.html">QTObject</A></B></TD>
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<TD><CODE><A HREF="../../../quicktime/QTObject.html#disposeQTObject()">disposeQTObject</A>, <A HREF="../../../quicktime/QTObject.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../quicktime/QTObject.html#ID(quicktime.QTObject)">ID</A></CODE></TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD>
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<A NAME="upp"><!-- --></A><H3>
upp</H3>
<PRE>
public quicktime.std.clocks.CBRunner <B>upp</B></PRE>
<DL>
</DL>
<HR>

<A NAME="timeWhenCalledMsecs"><!-- --></A><H3>
timeWhenCalledMsecs</H3>
<PRE>
public int <B>timeWhenCalledMsecs</B></PRE>
<DL>
<DD>This variable is set by the dispatch mechanism when the callback is invoked by QuickTime.
 In the execute method this variable can be queried to find out the time when the callback
 first appeared in Java.</DL>
<HR>

<A NAME="rateWhenCalled"><!-- --></A><H3>
rateWhenCalled</H3>
<PRE>
public float <B>rateWhenCalled</B></PRE>
<DL>
<DD>This variable is set by the dispatch mechanism when the callback is invoked by QuickTime.
 In the execute method this variable can be queried to find out the rate of the call back's TimeBase
 when the call back was invoked.</DL>

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<A NAME="callMeWhen()"><!-- --></A><H3>
callMeWhen</H3>
<PRE>
public abstract void <B>callMeWhen</B>()
                         throws <A HREF="../../../quicktime/std/StdQTException.html">StdQTException</A></PRE>
<DL>
<DD>Registers the callback. It will use the state of the subclass to set the parameters
 that control the callbacks activation. As a method on QTCallBack it does nothing.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/INMAC/QT/iqMovieToolbox.50.htm#iqMovi1241">QuickTime::CallMeWhen</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>cb</CODE> - CallBack interface who's execute method will be called when the callback becomes active.</DL>
</DD>
</DL>
<HR>

<A NAME="execute()"><!-- --></A><H3>
execute</H3>
<PRE>
public abstract void <B>execute</B>()</PRE>
<DL>
<DD>This method is called when the callback is executed. Subclasses define
 this method.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="cancel()"><!-- --></A><H3>
cancel</H3>
<PRE>
public final void <B>cancel</B>()</PRE>
<DL>
<DD>Cancel a callback event before it executes.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/INMAC/QT/iqMovieToolbox.50.htm#iqMovi1243">QuickTime::CancelCallBack()</a> </b><BR><BR>
</DL>
</DD>
</DL>
<HR>

<A NAME="cancelAndCleanup()"><!-- --></A><H3>
cancelAndCleanup</H3>
<PRE>
public final void <B>cancelAndCleanup</B>()</PRE>
<DL>
<DD>Cancel a callback event before it executes. This call also
 cleans up the method closure object that is used to dispatch
 the callback into Java. If a callback has ever been scheduled
 it is the applications responsibility to ensure that the cleanup
 method is called to allow the call back to be garbage collected.
 The call back can be rescheduled after this call (provided of course you also
 cleanup again!)
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/INMAC/QT/iqMovieToolbox.50.htm#iqMovi1243">QuickTime::CancelCallBack()</a> </b><BR><BR>
</DL>
</DD>
</DL>
<HR>

<A NAME="getTimeBase()"><!-- --></A><H3>
getTimeBase</H3>
<PRE>
public final <A HREF="../../../quicktime/std/clocks/TimeBase.html">TimeBase</A> <B>getTimeBase</B>()</PRE>
<DL>
<DD>Retrieve the time base of a callback event.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/INMAC/QT/iqMovieToolbox.50.htm#iqMovi1248">QuickTime::GetCallBackTimeBase()</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the time base of the callback.</DL>
</DD>
</DL>
<HR>

<A NAME="getType()"><!-- --></A><H3>
getType</H3>
<PRE>
public final int <B>getType</B>()</PRE>
<DL>
<DD>Retrieve a callback's event type.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/INMAC/QT/iqMovieToolbox.50.htm#iqMovi1251">QuickTime::GetCallBackType()</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the callback's type.</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../quicktime/QTObject.html">QTObject</A></CODE></B></DD>
<DD>A String representation of the class.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../quicktime/QTObject.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../../quicktime/QTObject.html">QTObject</A></CODE></DL>
</DD>
</DL>
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