flash游戏窗口（响应键盘的四种方法）

<div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">响应键盘的方法作为</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">AS</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中的一个重要组成部分，在如今已经越来越广泛的使用，尤其是在</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"> FLASH</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">游戏制作中，如果缺少了响应键盘的方法，那是不可能的，而响应键盘的方法主要的四种，分别是：</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">1</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、利用按钮进行检测</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">2</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、利用</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">KEY</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对象</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">3</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、利用键盘侦听的方法</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">4</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、利用影片剪辑的</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">keyUp</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">keyDown</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事件来实现响应键盘</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　只有熟练掌握了这些方法，然后加以变通的话，就会得到很多意想不到的效果，下面我就结合理论和自己的想法简要的介绍一下。</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　第一种响应键盘的方法：利用按钮进行检测来实现响应键盘</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　在按钮的</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">on</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事件处理函数中不但可以对鼠标事件作出响应，而且可以对键盘事件作出响应。</span><span style="COLOR: black; FONT-SIZE: 9pt"> </span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如在按钮的动作面板中加入如下所示的代码，在敲击键盘上的</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">X</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">键时输出窗口中将提示：</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">X is pressed<br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在按钮上加上：</span><span class="code"><span style="COLOR: black" lang="EN-US"><xml:namespace prefix="o" ns="urn:schemas-microsoft-com

ffice:office" /><o:p></o:p></span></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="COLOR: black" lang="EN-US">on (keyPress "x") {<span style="mso-spacerun: yes"> </span>trace("X is pressed");<br />}</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　但是要注意的是：检测键盘上的字母键时，字母都应为小写。如果要检测键盘中的特殊键，</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"> Flash</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中有一些专门的代码来表示它们，下面列出了一些常用的功能键的表示代码：　　如要检测键盘上的键，可以使用下面的</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">ActionScript</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">：</span><span class="code"><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><o:p></o:p></span></span></div><pre><span style="COLOR: black" lang="EN-US"><span style="font-family:宋体;">on (keyPress "") {<br /><span style="mso-spacerun: yes"> </span>trace("Left is pressed");<br />}<o:p></o:p></span></span></pre><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　另外，你可以在一个按钮中加入若干个</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">on</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数，也可以在一个</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">on</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数中结合多种事件，这使</span><span style="COLOR: black; FONT-SIZE: 9pt"> </span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">您可以为按钮定义自己熟悉常用的快捷键，如下所示：</span><span class="code"><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><o:p></o:p></span></span></div><pre><span style="COLOR: black" lang="EN-US"><span style="font-family:宋体;">on (release, keyPress "") {<br /><span style="mso-spacerun: yes"> </span>_root.myMC.prevFrame();<br />}<o:p></o:p></span></span></pre><pre><span style="COLOR: black" lang="EN-US"><span style="font-family:宋体;">on (release, keyPress "") {<o:p></o:p></span></span></pre><pre><span style="COLOR: black" lang="EN-US"><span style="font-family:宋体;"><span style="mso-spacerun: yes"> </span>_root.myMC.nextFrame();<o:p></o:p></span></span></pre><pre><span style="COLOR: black" lang="EN-US"><span style="font-family:宋体;">}<o:p></o:p></span></span></pre><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　上面的第一个语句实现单击按钮或按键盘上的左方向键，控制影片剪辑</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">myMC</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">回退</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">1</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">帧，而上面的第二个语句实现单击按钮或按键盘上的右方向键，控制影片剪辑</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">myMC</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">前进</span><span style="COLOR: black; FONT-SIZE: 9pt" lang="EN-US">1</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">帧。</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p></o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">第二种响应键盘的方法：利用<span lang="EN-US">Key</span>对象来实现响应键盘的操作<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　利用按钮检测按键动作很有效，但是并不利于检测持续按下的键，所以不适合于制作某些通过键盘控制的游戏。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　这时，您就需要用到<span lang="EN-US">Key</span>对象。<span lang="EN-US">Key</span>对象包含在动作面板的“对象”<span lang="EN-US">/</span>“影片”目录下面，它由<span lang="EN-US">Flash</span>内置的一系列方法、常量和函数构成。使用<span lang="EN-US">Key</span>对象可以检测某个键是否被按下，如要检测左方向键是否被按下，可以使用如下<span lang="EN-US">ActionScript</span>：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">if (Key.isDown(Key.LEFT)) {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace("The left arrow is down");<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">}<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　函数<span lang="EN-US">Key.isDown</span>返回一个布尔值，当该数中的参数对应的键被按下时返回<span lang="EN-US">true</span>，否则返回<span lang="EN-US">false</span>。常量<span lang="EN-US">Key.LEFT</span>代表键盘上的左方向键。当左方向键被按下时，该函数返回<span lang="EN-US">true</span>。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　<span lang="EN-US">Key</span>对象中的常量代表了键盘上相应的键，下面列出了一些基本的常量：<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　一些功能键的表示：<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">Key.BACKSPACE Key.ENTER Key.

GDN <br />Key.CAPSLOCK Key.ESCAPE Key.RIGHT <br />Key.CONTROL Key.HOME Key.SHIFT <br />Key.DELETEKEY Key.INSERT Key.SPACE <br />Key.DOWN Key.LEFT Key.TAB <br />Key.END Key.PGUP Key.UP <o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　以上是键盘上的功能键，那么如何表示键盘上的字母键呢？<span lang="EN-US"><br /></span>　　<span lang="EN-US">Key</span>对象提供了一个函数<span lang="EN-US">Key.getCode</span>来实现这一功能，如下所示：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 12.0pt" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">if (Key.isDown(Key.getCode("x"))) {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace("X is pressed");<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">}<o:p></o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　上面脚本的意思就是，利用<span lang="EN-US">Key.getCode</span>函数来告诉系统你是否按下了<span lang="EN-US">x</span>键，如果按下了<span lang="EN-US">x</span>键以后，函数<span lang="EN-US">Key.isDown</span>则会返回<span lang="EN-US">true,</span>在输出窗口就会输出<span lang="EN-US">X is pressed</span>。<span lang="EN-US"><o:p></o:p></span></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">第三种响应键盘的方法：利用键盘侦听的方法来实现响应键盘（个人习惯用这种方法）<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　假设在影片剪辑的<span lang="EN-US">onClipEvent(enterFrame)</span>事件处理函数中检测按键动作，而影片剪辑所在的时间轴较长，或计算机运算速度较慢，就有可能出现这种情况：即当在键盘上按下某个键时还未来得及处理<span lang="EN-US">onClipEvent(enterFrame)</span>函数，那么按键动作将被忽略，这样的话，很多你想要的效果就会无法实现了。<span lang="EN-US"><br /></span>另外，还有一个需要解决的问题就是，在某些游戏（如射击）中，我们需要按一次键就执行一次动作（发射一发子弹），即使长时间按住某个键不放也只能算作一次按键，而<span lang="EN-US">Key</span>对象并不能区别是长时间按住同一个键还是快速地多次按键。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　所以如果要解决这个问题，就需要用到键盘侦听的方法。你可以使用 “侦听器（<span lang="EN-US">listener</span>）”来侦听键盘上的按键动作。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　要使用侦听器之前，首先需要创建它，你可以使用如下所示的命令来告诉计算机你需要侦听某个事件：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">Key.addListener(_root);<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　<span lang="EN-US">Key.addListener</span>命令将 主时间轴 或 某个影片剪辑作为它的参数，当侦听的事件发生时，可以用这个参数指定的对象来响应该事件。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　上面的代码指定主时间轴来响应该事件。要让主时间轴对该事件作出响应，还需要设置一个相应的事件处理函数，否则设置侦听器就没有什么意义了。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　键盘侦听的事件处理函数有两个：<span lang="EN-US">onKeyUp</span>和<span lang="EN-US">onKeyDown</span>，如下所示：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 12.0pt" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">Key.addListener(_root);<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">_root.onKeyUp = function() {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace(Key.getAscii());<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">};<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">//</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">代码的意思是，当按下一个键并释放后，输出窗口将输出你按下的那个键的<span lang="EN-US">Ascii</span>码<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　当然，你也可以使用影片剪辑作为侦听键盘的对象，只需要使用影片剪辑的路径代替<span lang="EN-US">_root</span>作为<span lang="EN-US">Key.addListener</span>命令的参数就可以了。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　比如下面代码：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 12.0pt" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">Key.addListener(_root.mc);<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">_root.mc.onKeyUp = function() {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace(Key.getAscii());<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">};<o:p></o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　代码的意思是，当按下一个键并释放后，输出窗口将输出你按下的那个键的<span lang="EN-US">Ascii</span>码<span lang="EN-US">,</span>意思差不多，但是键盘侦听对象不同，一个是影片<span lang="EN-US">mc,</span>一个是主时间轴。</span><span style="COLOR: black" lang="EN-US"><o:p></o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="COLOR: black" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">第四种响应键盘的方法：利用影片剪辑的<span lang="EN-US">keyUp</span>和<span lang="EN-US">keyDown</span>事件来实现响应键盘<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　最后一种方法很容易被忽视，但是也有一定的应用价值，最重要的是把概念弄清楚。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　影片剪辑包含两个与键盘相关的事件<span lang="EN-US">keyUp</span>和<span lang="EN-US">keyDown</span>，使用它们也可以实现对按键事件的响应<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　例如下面的代码：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">onClipEvent (keyDown) {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace(Key.getAscii());<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">}<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">//</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">当按下键盘上的一个键的时候，输出窗口将输出按下的这个键的<span lang="EN-US">Ascii</span>码值。<span lang="EN-US"><o:p></o:p></span></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　函数<span lang="EN-US">Key.getAscii</span>表示返回与按键相对应的<span lang="EN-US">ASCII</span>码，其中<span lang="EN-US"> ASCII</span>码是一个整数，键盘上的每个字符对应一个<span lang="EN-US">ASCII</span>码，如字母<span lang="EN-US">A</span>对应的<span lang="EN-US">ASCII</span>码为<span lang="EN-US">65</span>，<span lang="EN-US">B</span>对应的<span lang="EN-US">ASCII</span>码为<span lang="EN-US">66</span>，<span lang="EN-US">a</span>对应的<span lang="EN-US">ASCII</span>码为<span lang="EN-US">97, b</span>对应的<span lang="EN-US">ASCII</span>码为<span lang="EN-US">98</span>，<span lang="EN-US"> </span>对应的<span lang="EN-US">ASCII</span>码为<span lang="EN-US">43</span>等。需要注意的是：只有字符键才有<span lang="EN-US">ASCII</span>码，键盘上的功能键是没有<span lang="EN-US">ASCII</span>码的。<span lang="EN-US"><br /></span>如果我想在输出窗口中输出与按键相对应的字符，那怎么办？<span lang="EN-US"><br /></span>这时候，你可以使用<span lang="EN-US">String</span>对象的<span lang="EN-US">fromCharCode</span>函数将<span lang="EN-US">ASCII</span>码转换成字符，如将上例的代码改成如下所示：</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 12.0pt" lang="EN-US"><o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">onClipEvent (keyDown) {<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes"> </span>trace(String.fromCharCode(Key.getAscii()));<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">};<o:p></o:p></span></div><div style="TEXT-ALIGN: left; MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US">//</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">意思就是说，当按下键盘的一个键，输出按下的这个键相对应的字符，当然除了功能键。<span lang="EN-US"><o:p></o:p></span></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><o:p> </o:p></span></div><div style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体" lang="EN-US"><br /></span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">　　关于<span lang="EN-US">String</span>对象的详细解释，大家可以查看动作面板的“对象”<span lang="EN-US">/</span>“核心”目录下面。</span><span style="COLOR: black" lang="EN-US"><o:p></o:p></span></div></div>