📄 right13-1.htm
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">输入键<u1:p>
</span><span lang="EN-US"><o:p>
</o:p>
</span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt">WM_DOWN
WM_UP<u1:p>
</span><span lang="EN-US"><o:p>
</o:p>
</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">应用程序处理<u1:p>
</span><span lang="EN-US"><o:p>
</o:p>
</span></p>
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<p ALIGN="JUSTIFY" style="line-height: 100%; margin-top: 10; margin-bottom: 0"><font LANG="ZH-CN" size="2">2.
字符消息</font></p>
<p ALIGN="JUSTIFY" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><font size="2"><font LANG="ZH-CN">当击键过程的组合产生可见的字符时，</font>Windows<font LANG="ZH-CN">在发送键盘消息的同时还发送字符消息。</font></font></p>
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<p class="MsoNormal" align="center" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center"><span style="font-size:10.0pt;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">分类<u1:p>
</span><span style="font-size:10.0pt"> </u1:p>
</span><span lang="EN-US" style="font-size:
12.0pt;font-family:宋体"><o:p>
</o:p>
</span></p>
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<p class="MsoNormal" align="center" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center"><span style="font-size:10.0pt;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">产生消息<u1:p>
</span><span lang="EN-US" style="font-size:10.0pt"> </u1:p>
</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体"><o:p>
</o:p>
</span></p>
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none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">系统字符消息<u1:p>
</span><span style="font-size:10.0pt"> </u1:p>
</span><span lang="EN-US" style="font-size:
12.0pt;font-family:宋体"><o:p>
</o:p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt">WM_SYSCHAR<span style="mso-spacerun:
yes"> </span>WM_SYSDEADCHAR<u1:p>
</u1:p>
</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体"><o:p>
</o:p>
</span></p>
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none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">非系统字符消息<u1:p>
</span><span style="font-size:10.0pt"> </u1:p>
</span><span lang="EN-US" style="font-size:
12.0pt;font-family:宋体"><o:p>
</o:p>
</span></p>
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<td width="249" valign="top" style="width:186.75pt;border:none;border-bottom:
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt">WM_CHAR WM_DEADCHAR<u1:p>
</u1:p>
</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体"><o:p>
</o:p>
</span></p>
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<font SIZE="3">
<p ALIGN="JUSTIFY" style="line-height: 100%; margin-top: 5; margin-bottom: 0"></font><font LANG="ZH-CN" size="2">注意非系统按键消息只能产生非系统字符消息，同样系统按键消息产生系统字符信息。死字符是指字符本身不能显示出来，但是可以改变其他字符的显示，应用程序一般不对它们进行处理。</font></p>
<font SIZE="3">
<p ALIGN="JUSTIFY" style="line-height: 100%; margin-top: 5; margin-bottom: 0"></font><font size="2"><font LANG="ZH-CN">如果产生了字符消息，这些消息所对应的</font>wParam<font LANG="ZH-CN">参数中包含字符的</font>ASCII<font LANG="ZH-CN">码，对于键盘消息则是虚拟码，</font>lParam<font LANG="ZH-CN">参数则包含扫描码等信息。</font></font></p>
</blockquote>
<p ALIGN="JUSTIFY" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">3.
<font LANG="ZH-CN">键盘输入示例</font></font></p>
<p ALIGN="JUSTIFY" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2"><font LANG="ZH-CN"><a href="example13-1.htm" target="_blank">【例</a></font><a href="example13-1.htm" target="_blank">13-1<font LANG="ZH-CN">】</font></a><font LANG="ZH-CN">接收键盘输入，并将输入的字符显示在屏幕上，并且能处理删除键、退格键等按键。</font></font></p>
<p style="line-height: 100%; text-indent: 0; margin: 0" class="右标题" align="left"> </p>
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