?? 顏色控制.htm
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style="MARGIN-LEFT: 42.6pt; VERTICAL-ALIGN: bottom; TEXT-INDENT: -21.3pt"><SPAN
lang=EN-US><SPAN style="mso-tab-count: 1">
</SPAN>已引用的字符串內，要用雙引號。如：</SPAN><SPAN style="FONT-FAMILY: 'Times New Roman'"> <B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US>'</SPAN></B><SPAN
lang=EN-US> <B style="mso-bidi-font-weight: normal">quoted '
</B></SPAN></SPAN><B style="mso-bidi-font-weight: normal">：</B><B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><SPAN style="mso-spacerun: yes">
</SPAN>' a<SPAN style="mso-spacerun: yes"> </SPAN>'<SPAN
style="mso-spacerun: yes"> </SPAN>' quoted '<SPAN
style="mso-spacerun: yes"> </SPAN>'<SPAN style="mso-spacerun: yes">
</SPAN>string ' </SPAN>；</B><B style="mso-bidi-font-weight: normal"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"> ' Quote<SPAN
style="mso-spacerun: yes"> </SPAN>'<SPAN style="mso-spacerun: yes">
</SPAN>' a<SPAN style="mso-spacerun: yes"> </SPAN>'<SPAN
style="mso-spacerun: yes"> </SPAN>'<SPAN style="mso-spacerun: yes">
</SPAN>' quoted '<SPAN style="mso-spacerun: yes"> </SPAN>'<SPAN
style="mso-spacerun: yes"> </SPAN>'<SPAN style="mso-spacerun: yes">
</SPAN>string '<SPAN style="mso-spacerun: yes"> </SPAN>' now
'</SPAN>。</B>在引號后要用逗號或空格結尾。</P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.6pt; VERTICAL-ALIGN: bottom; TEXT-INDENT: -21.3pt"><SPAN
lang=EN-US><SPAN style="mso-tab-count: 1">
</SPAN>除了最后一句，各語句在</SPAN><SPAN
style="FONT-FAMILY: 黑體">引號內</SPAN>要以逗號或分號結尾；在<SPAN
style="FONT-FAMILY: 黑體">引號后</SPAN>要用逗號或空格結尾。</P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.6pt; VERTICAL-ALIGN: bottom; TEXT-INDENT: -21.3pt"><SPAN
lang=EN-US><SPAN style="mso-tab-count: 1">
</SPAN>有后續行的各行要以三個句號</SPAN><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">(...)</SPAN>結尾。<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom">前面的例子之一<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">mmenu4.m</SPAN></B>是所涉及的回調字符串句法的很好說明。<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">>><SPAN
style="mso-spacerun: yes"> </SPAN>Hm_top<SPAN
style="mso-spacerun: yes"> </SPAN>=<SPAN style="mso-spacerun: yes">
</SPAN><I style="mso-bidi-font-style: normal">unimenu</I>(Label ' </SPAN>，<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"> ' Example ' )</SPAN>；<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">>><SPAN
style="mso-spacerun: yes"> </SPAN>HM_boxon<SPAN
style="mso-spacerun: yes"> </SPAN>=<SPAN style="mso-spacerun: yes">
</SPAN>uimenu(Hm_top</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' Label ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' Set '<SPAN
style="mso-spacerun: yes"> </SPAN>Box on ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' CallBack ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">[...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' set(gca</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''Box''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''on'')</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>set(Hm_boxon</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''Enable''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''off'')</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>set(Hm_boxoff</SPAN>，<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">''Enable''</SPAN>，<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">''on'') ' ]</SPAN>；<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">>><SPAN
style="mso-spacerun: yes"> </SPAN>Hm_boxoff<SPAN
style="mso-spacerun: yes"> </SPAN>=<SPAN style="mso-spacerun: yes">
</SPAN>uimenu(Hm_top</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' Label ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' Set Box off ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' Enable ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' off '<SPAN
style="mso-spacerun: yes"> </SPAN>' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' CallBack ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">[...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' set(gca</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''Box''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''off''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' set(Hm_boxon</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''Enable''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''on'')</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"> ' </SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">...<o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 42.55pt; VERTICAL-ALIGN: bottom; tab-stops: 35.45pt"><SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes">
</SPAN>' set(Hm_boxoff''Enable''</SPAN>，<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">''off'') ' ]</SPAN>；<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom">上例中還引出了關于回調函數另一個重點，在變量<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">Hm_boxoff</SPAN></B>定義之前，在回調串中用<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">Hm_boxoff</SPAN></B>替代<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">Hm_boxon</SPAN></B>。因為回調串只是一個字符串，<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'">MATLAB </SPAN>不會給出警告，而且僅在<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">uimenu</SPAN></B>被激活并將字符串傳給<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">eval</SPAN></B>時才由<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">MATLAB</SPAN>執行。它隱含有函數<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">M</SPAN>文件的設計和測試，這將在本章后面討論。<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><SPAN lang=EN-US
style="FONT-FAMILY: 黑體">M文件的舉例<o:p></o:p></SPAN></P>
<P class=MsoNormal style="VERTICAL-ALIGN: bottom"><B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal
style="VERTICAL-ALIGN: bottom; TEXT-INDENT: 21.3pt">下例將演示一組簡單菜單的生成。該例子包含在<SPAN
style="FONT-FAMILY: 楷體">精通</SPAN><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">MATLAB</SPAN><SPAN
style="FONT-FAMILY: 楷體">工具箱</SPAN>的函數<SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">M</SPAN>文件<B
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'">mmenus</SPAN></B>中。正如下面所示的那樣，這個函數文件被分隔成了若干塊，以便于討論函數的各個方面。<SPAN
lang=EN-US style="FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="VERTICAL-ALIGN: bottom; TEXT-INDENT: 21.3pt">首先，定義一個函數并在當前的<SPAN
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