keycallback.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_11) on Tue Oct 23 19:38:41 EEST 2007 --><TITLE>KeyCallback (Widsets API)</TITLE><META NAME="keywords" CONTENT="KeyCallback interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="KeyCallback (Widsets API)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../widsets/api/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../widsets/api/IntArray.html" title="class in "><B>PREV CLASS</B></A> <A HREF="../../widsets/api/Label.html" title="class in "><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?widsets/api/KeyCallback.html" target="_top"><B>FRAMES</B></A> <A HREF="KeyCallback.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1"></FONT><BR>Interface KeyCallback</H2><HR><DL><DT><PRE> interface <B>KeyCallback</B></DL></PRE><P><p> This interface represents a function prototype for a key action. </p> <p> A custom key callback function can be supplied for example for <A HREF="../../widsets/api/Shell.html#setKeyHandler(KeyCallback)"><CODE>Shell.setKeyHandler(KeyCallback)</CODE></A>. Key event handling can be redirected this way to custom code. </p> <p> If the key callback function is not given the default <A HREF="../../widsets/api/Script.html#keyAction(Component, int, int)"><CODE>Script.keyAction(Component, int, int)</CODE></A> is called. </p><P><P><DL><DT><B>See Also:</B><DD><A HREF="../../widsets/api/Shell.html#setKeyHandler(KeyCallback)"><CODE>Shell.setKeyHandler(KeyCallback)</CODE></A>, <a href="package-summary.html#callbacks">Callbacks</a></DL><HR><P><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/KeyCallback.html#keyAction(Component, int, int)">keyAction</A></B>(<A HREF="../../widsets/api/Component.html" title="class in ">Component</A> source, int op, int code)</CODE><BR> Called when key event has occurred.</TD></TR></TABLE> <P><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="keyAction(Component, int, int)"><!-- --></A><H3>keyAction</H3><PRE>boolean <B>keyAction</B>(<A HREF="../../widsets/api/Component.html" title="class in ">Component</A> source, int op, int code)</PRE><DL><DD>Called when key event has occurred.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>source</CODE> - Currently focused component<DD><CODE>op</CODE> - Operation that has occurred: <A HREF="../../widsets/api/API.html#KEY_PRESSED"><CODE>KEY_PRESSED</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_RELEASED"><CODE>KEY_RELEASED</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_REPEATED"><CODE>KEY_REPEATED</CODE></A><DD><CODE>code</CODE> - unicode value of key (>=0) or special key code (<0) for other keys<DT><B>Returns:</B><DD><code>true</code> if key event was consumed and should not be processed anywhere else<DT><B>See Also:</B><DD><A HREF="../../widsets/api/API.html#KEY_UP"><CODE>KEY_UP</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_DOWN"><CODE>KEY_DOWN</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_LEFT"><CODE>KEY_LEFT</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_RIGHT"><CODE>KEY_RIGHT</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_FIRE"><CODE>KEY_FIRE</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_ESC"><CODE>KEY_ESC</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_ENTER"><CODE>KEY_ENTER</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_CR"><CODE>KEY_CR</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_DELETE"><CODE>KEY_DELETE</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_BACKSPACE"><CODE>KEY_BACKSPACE</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_TAB"><CODE>KEY_TAB</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_OK"><CODE>KEY_OK</CODE></A>, <A HREF="../../widsets/api/API.html#KEY_BACK"><CODE>KEY_BACK</CODE></A></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../widsets/api/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../widsets/api/IntArray.html" title="class in "><B>PREV CLASS</B></A> <A HREF="../../widsets/api/Label.html" title="class in "><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?widsets/api/KeyCallback.html" target="_top"><B>FRAMES</B></A> <A HREF="KeyCallback.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR></BODY></HTML>⌨️ 快捷键说明
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