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<h1 align="center"><a name="串口調試助手源程序">串口調試助手源程序</a></h1>
<h1 align="center">及編程詳細過程（二）</h1>
<p align="center">作者：<a href="mailto:xiaofengstudio@sina.com">龔建偉</a>
2001.8.25</p>
<p align="center">可以任意轉載，但必須注明作者和說明來自<a href="http://roaringwind.best.163.com">http://roaringwind.best.163.com</a>，不得作為商用</p>
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<p align="center">目次：</p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">1.建立項目 </font></b></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">2.在項目中插入MSComm控件</font></b><font color="#C0C0C0"><a href="#2.在項目中插入MSComm控件"> </a></font></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">3.利用ClassWizard定義CMSComm類控制變量</font></b></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">4.在對話框中添加控件 </font></b></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">5.添加串口事件消息處理函數OnComm()</font></b></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">6.打開和設置串口參數</font></b></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b><font color="#C0C0C0">7.發送數據</font></b></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><a href="#8.發送十六進制字符">8.發送十六進制字符</a></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><a href="#9.在接收框中以十六進制顯示">9.在接收框中以十六進制顯示</a></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><a href="#10.如何設置自動發送">10.如何設置自動發送</a></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><a href="#11.什么是VARIANT數據類型？如何使用VARIANT數據類型？">11.什么是VARIANT數據類型？如何使用VARIANT數據類型？</a></p>
<p align="left" style="margin-top: 5; margin-bottom: 5"> </p>
<p align="left" style="margin-top: 5; margin-bottom: 5"><b>
</b></p>
<p align="left"><font color="#000000"> 這是<a href="scommassistantcode.htm">串口調試助手源程序及編程詳細過程</a>（一）的續篇，首先謝謝朋友們的支持與鼓勵。</font></p>
<p align="left"><b><font color="#000000">
這是更新后適合本文的源程序（2001.8.25制作），如果還沒有下載源程序，又對本文有興趣，請
</font>
</b><font color="#000000"><a href="../download/scommtest02.zip">立即下載
<img border="0" src="../pic/down.gif" width="16" height="16">
</a>（當然，你看完本文也可以自己做出來，這個程序是接著上一個做的，如果你沒下載前面程序，則沒必要再下載了，本程序全部包含）。</font></p>
<p align="left"> </p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><a name="8.發送十六進制字符"><b><font color="#000000">8.發送十六進制字符</font></b></a></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><font color="#000000">
在主對話框中加入一個復選接鈕，ID為IDC_CHECK_HEXSEND Caption: 十六進制發送，再利用ClassWizard為其添加控制變量：m_ctrlHexSend；</font></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><font color="#000000"> 在ClassView中為SCommTestDlg類添加以下兩個PUBLIC成員函數，并輸入相應代碼;</font></p>
<p align="left" style="margin-top: 3; margin-bottom: 3"><font color="#000000"> </font></p>
<blockquote>
<blockquote>
<p align="left" style="margin-top: 3; margin-bottom: 3"><font color="#000000">//由于這個轉換函數的格式限制，在發送框中的十六制字符應該每兩個字符之間插入一個空隔<br>
//如：A1 23 45 0B 00 29<br>
//CByteArray是一個動態字節數組，可參看MSDN幫助<br>
int CSCommTestDlg::String2Hex(CString str, CByteArray &senddata)<br>
{<br>
int hexdata,lowhexdata;<br>
int hexdatalen=0;<br>
int len=str.GetLength();<br>
senddata.SetSize(len/2);<br>
for(int i=0;i<len;)<br>
{<br>
char lstr,hstr=str[i];<br>
if(hstr==' ')<br>
{<br>
i++;<br>
continue;<br>
}<br>
i++;<br>
if(i>=len)<br>
break;<br>
lstr=str[i];<br>
hexdata=ConvertHexChar(hstr);<br>
lowhexdata=ConvertHexChar(lstr);<br>
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