command.html

是MIDP 的API 查詢文件, 大家可以看一下裡面的index.html, 再用Package 或 Class 名字來查.

 logical screen. </p>

 <P><code>CANCEL</code> is often used together with <code>OK</code>.</P>

 <P>Value <code>4</code> is assigned to <code>OK</code>.</P><DD><DL>
<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/lcdui/Command.html#CANCEL"><CODE>CANCEL</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="HELP"><!-- --></A><H3>
HELP</H3>
<PRE>
public static final int <B>HELP</B></PRE>
<DL>
<DD>This command specifies a request for on-line help.
 No help information is shown automatically by the implementation.
 The
 <A HREF="../../../javax/microedition/lcdui/CommandListener.html#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable)"><CODE>commandAction</CODE></A> provided by the
 application is responsible for showing the help information. 

 <P>Value <code>5</code> is assigned to <code>HELP</code>.</P></DL>
<HR>

<A NAME="STOP"><!-- --></A><H3>
STOP</H3>
<PRE>
public static final int <B>STOP</B></PRE>
<DL>
<DD>A command that will stop some currently running
 process, operation, etc.
 Nothing is stopped automatically by the implementation.
 The cessation must
 be performed
 by the <A HREF="../../../javax/microedition/lcdui/CommandListener.html#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable)"><CODE>commandAction</CODE></A> provided by
 the application.

 <p> With this command type the application hints to the 
 implementation that
 the user will use this command to stop any currently running process
 visible to the user on the current screen. Examples of running processes
 might include downloading or sending of data. Use of the
 <code>STOP</code>
 command does
 not necessarily imply a switch to another screen. </p>

 <P>Value <code>6</code> is assigned to <code>STOP</code>.</P><DD><DL>
<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/lcdui/Command.html#BACK"><CODE>BACK</CODE></A>, 
<A HREF="../../../javax/microedition/lcdui/Command.html#CANCEL"><CODE>CANCEL</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="EXIT"><!-- --></A><H3>
EXIT</H3>
<PRE>
public static final int <B>EXIT</B></PRE>
<DL>
<DD>A command used for exiting from the application.  When the user
 invokes this command, the implementation does not exit automatically.
 The application's 
 <A HREF="../../../javax/microedition/lcdui/CommandListener.html#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Displayable)"><CODE>commandAction</CODE></A>
 will be called, and it should exit the application if it
 is appropriate to do so.

 <P>Value <code>7</code> is assigned to <code>EXIT</code>.</P></DL>
<HR>

<A NAME="ITEM"><!-- --></A><H3>
ITEM</H3>
<PRE>
public static final int <B>ITEM</B></PRE>
<DL>
<DD>With this command type the application can hint to the
 implementation that the command is specific to the items of
 the <code>Screen</code> or the elements of a
 <code>Choice</code>. Normally this
 means that command relates to the focused item or element.
 For example, an implementation of <code>List</code> can use
 this information for
 creating context sensitive menus.
 
 <P>Value <code>8</code> is assigned to <code>ITEM</code>.</P></DL>

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<A NAME="Command(java.lang.String, int, int)"><!-- --></A><H3>
Command</H3>
<PRE>
public <B>Command</B>(<A HREF="../../../java/lang/String.html">String</A>&nbsp;label,
               int&nbsp;commandType,
               int&nbsp;priority)</PRE>
<DL>
<DD>Creates a new command object with the given short
 
 <a href="#label">label</a>,
 <a href="#type">type</a>, and
 <a href="#priority">priority</a>.

 The newly created command has no long label.  This constructor is
 identical to <code>Command(label, null, commandType, priority)</code>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>label</CODE> - the command's short label<DD><CODE>commandType</CODE> - the command's type<DD><CODE>priority</CODE> - the command's priority value<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if label is <code>null</code><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the <code>commandType</code>
 is an invalid type<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/lcdui/Command.html#Command(java.lang.String, java.lang.String, int, int)"><CODE>Command(String, String, int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="Command(java.lang.String, java.lang.String, int, int)"><!-- --></A><H3>
Command</H3>
<PRE>
public <B>Command</B>(<A HREF="../../../java/lang/String.html">String</A>&nbsp;shortLabel,
               <A HREF="../../../java/lang/String.html">String</A>&nbsp;longLabel,
               int&nbsp;commandType,
               int&nbsp;priority)</PRE>
<DL>
<DD>Creates a new command object with the given
 <a href="#label">labels</a>,
 <a href="#type">type</a>, and
 <a href="#priority">priority</a>.

 <p>The short label is required and must not be
 <code>null</code>.  The long label is
 optional and may be <code>null</code> if the command is to have
 no long label.</p><DD><DL>
<DT><B>Parameters:</B><DD><CODE>shortLabel</CODE> - the command's short label<DD><CODE>longLabel</CODE> - the command's long label, or <code>null</code> if none<DD><CODE>commandType</CODE> - the command's type<DD><CODE>priority</CODE> - the command's priority value<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if <code>shortLabel</code> is
 <code>null</code><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the <code>commandType</code> is an
 invalid type<DT><B>Since: </B><DD>MIDP 2.0</DD>
</DL>
</DD>
</DL>

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<A NAME="getLabel()"><!-- --></A><H3>
getLabel</H3>
<PRE>
public <A HREF="../../../java/lang/String.html">String</A> <B>getLabel</B>()</PRE>
<DL>
<DD>Gets the short label of the command.<DD><DL>
<DT><B>Returns:</B><DD>the <code>Command's</code> short label</DL>
</DD>
</DL>
<HR>

<A NAME="getLongLabel()"><!-- --></A><H3>
getLongLabel</H3>
<PRE>
public <A HREF="../../../java/lang/String.html">String</A> <B>getLongLabel</B>()</PRE>
<DL>
<DD>Gets the long label of the command.<DD><DL>
<DT><B>Returns:</B><DD>the <code>Command's</code> long label, or
 <code>null</code> if the <code>Command</code> has no long
 label<DT><B>Since: </B><DD>MIDP 2.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getCommandType()"><!-- --></A><H3>
getCommandType</H3>
<PRE>
public int <B>getCommandType</B>()</PRE>
<DL>
<DD>Gets the type of the command.<DD><DL>
<DT><B>Returns:</B><DD>type of the <code>Command</code></DL>
</DD>
</DL>
<HR>

<A NAME="getPriority()"><!-- --></A><H3>
getPriority</H3>
<PRE>
public int <B>getPriority</B>()</PRE>
<DL>
<DD>Gets the priority of the command.<DD><DL>
<DT><B>Returns:</B><DD>priority of the <code>Command</code></DL>
</DD>
</DL>
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