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<span style="background-color: #CCFF99">第 13 章</span><span style="background-color: #CCFF99">
</span>><span style="background-color: #CCFF99"> 第 3 节 </span>><span style="background-color: #CCFF99">
13.3 习题</span></p>
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<p ALIGN="JUSTIFY"><font size="2">1. <font FACE="??ì?,SimSun" LANG="ZH-CN">如何获得输入焦点？</font></font></p>
<p ALIGN="JUSTIFY"><font size="2">2. <font FACE="??ì?,SimSun" LANG="ZH-CN">什么是虚拟码？</font></font></p>
<p ALIGN="JUSTIFY"><font size="2">3. <font FACE="??ì?,SimSun" LANG="ZH-CN">什么是按键消息？什么是字符消息？</font></font></p>
<p ALIGN="JUSTIFY"><font size="2">4. <font FACE="??ì?,SimSun" LANG="ZH-CN">单击鼠标时如何检验是否按下了〈</font>Shift<font FACE="??ì?,SimSun" LANG="ZH-CN">〉键。</font></font></p>
<p ALIGN="JUSTIFY"><font size="2">5. <font FACE="??ì?,SimSun" LANG="ZH-CN">设计一个程序，单击鼠标左键时，在屏幕上显示“单击鼠标左键”；单击鼠标右键时，在屏幕上显示“单击鼠标右键”。</font></font></p>
<p ALIGN="JUSTIFY"><font size="2">6. <font FACE="??ì?,SimSun" LANG="ZH-CN">编写程序，检测按键，如果有按键按下，在屏幕上显示按键的</font>ASCII<font FACE="??ì?,SimSun" LANG="ZH-CN">码。</font></font></p>
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<p style="line-height: 100%; margin-top: 0; margin-bottom: 0"> <span style="position: absolute; left: 27; top: 330"><a href="right13-2.htm" target="_self"><img border="0" src="rightd1.gif" width="113" height="70"></a></span>
<span style="position: absolute; left: 509; top: 328"><a href="right14-1.htm" target="_self"><img border="0" src="rightd2.gif" width="124" height="63"></a></span></p>
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