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qt下 第三方串口类 最新版本 1.2

<dl compact><dt><b>Returns:</b></dt><dd>number of bytes queued within <a class="elRef" doxygen="qiodevice.tag:" href="qiodevice.html#write">write()</a>, before the first TX_EMPTY event occur.</dd></dl>
<dl compact><dt><b>Warning:</b></dt><dd>this function may not give you expected results since TX_EMPTY may occur while writing data to the buffer. Eventually some TX_EMPTY events may not be catched.</dd></dl>
<dl compact><dt><b>Note:</b></dt><dd>this function always returns 0 in polling mode.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classWin__QextSerialPort.html#c72e737e24bda9c14a9388eac8ef2622">flush()</a>. </dd></dl>
<div class="fragment"><pre class="fragment"><a name="l00954"></a>00954 {
<a name="l00955"></a>00955     <span class="keywordflow">return</span> <a class="code" href="classWin__QextSerialPort.html#8e701bb9ef9ca4ff414b0cc89788fcab">_bytesToWrite</a>;
<a name="l00956"></a>00956 }
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<a class="anchor" name="3a7ddf86a867770c88777c3e78545cb0"></a><!-- doxytag: member="QextBaseType::close" ref="3a7ddf86a867770c88777c3e78545cb0" args="()" -->
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          <td class="memname">void Posix_QextSerialPort::close           </td>
          <td>(</td>
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          <td width="100%"><code> [virtual, inherited]</code></td>
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Closes a serial port. This function has no effect if the serial port associated with the class is not currently open. 
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Implements <a class="el" href="classQextSerialBase.html#2a4aea428bc05a88f86849bb7478c082">QextSerialBase</a>.<div class="fragment"><pre class="fragment"><a name="l00878"></a>00878 {
<a name="l00879"></a>00879     LOCK_MUTEX();
<a name="l00880"></a>00880     <a class="code" href="classPosix__QextSerialPort.html#c4fcc5ae9850c3bc9952a13e4ef82273">Posix_File</a>-&gt;close();
<a name="l00881"></a>00881     <a class="codeRef" doxygen="qiodevice.tag:" href="qiodevice.html#close">QIODevice::close</a>();
<a name="l00882"></a>00882     UNLOCK_MUTEX();
<a name="l00883"></a>00883 }
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<a class="anchor" name="fd2a4f6a94c877e5ae2dbf742af61b1d"></a><!-- doxytag: member="QextBaseType::close" ref="fd2a4f6a94c877e5ae2dbf742af61b1d" args="()" -->
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          <td class="memname">void Win_QextSerialPort::close           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [virtual, inherited]</code></td>
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Closes a serial port. This function has no effect if the serial port associated with the class is not currently open. 
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Implements <a class="el" href="classQextSerialBase.html#2a4aea428bc05a88f86849bb7478c082">QextSerialBase</a>.<div class="fragment"><pre class="fragment"><a name="l00233"></a>00233 {
<a name="l00234"></a>00234     LOCK_MUTEX();
<a name="l00235"></a>00235 
<a name="l00236"></a>00236     <span class="keywordflow">if</span> (<a class="codeRef" doxygen="qiodevice.tag:" href="qiodevice.html#isOpen">isOpen</a>()) {
<a name="l00237"></a>00237         <a class="code" href="classWin__QextSerialPort.html#c72e737e24bda9c14a9388eac8ef2622">flush</a>();
<a name="l00238"></a>00238         <span class="keywordflow">if</span> (<a class="code" href="classWin__QextSerialPort.html#9edfed65b7763c69d775a181c361e461">overlapThread</a>-&gt;isRunning()) {
<a name="l00239"></a>00239             <a class="code" href="classWin__QextSerialPort.html#9edfed65b7763c69d775a181c361e461">overlapThread</a>-&gt;<a class="code" href="classWin__QextSerialThread.html#36989d3d8cf24965092ce32bba8387d2">stop</a>();
<a name="l00240"></a>00240             <span class="keywordflow">if</span> (QThread::currentThread() != <a class="code" href="classWin__QextSerialPort.html#9edfed65b7763c69d775a181c361e461">overlapThread</a>)
<a name="l00241"></a>00241                 <a class="code" href="classWin__QextSerialPort.html#9edfed65b7763c69d775a181c361e461">overlapThread</a>-&gt;wait();
<a name="l00242"></a>00242         }
<a name="l00243"></a>00243         <span class="keywordflow">if</span> (CloseHandle(<a class="code" href="classWin__QextSerialPort.html#f6dae6bb1c6b51e766e551bc11f1721d">Win_Handle</a>))
<a name="l00244"></a>00244             <a class="code" href="classWin__QextSerialPort.html#f6dae6bb1c6b51e766e551bc11f1721d">Win_Handle</a> = INVALID_HANDLE_VALUE;
<a name="l00245"></a>00245         <a class="code" href="classWin__QextSerialPort.html#8e701bb9ef9ca4ff414b0cc89788fcab">_bytesToWrite</a> = 0;
<a name="l00246"></a>00246         <a class="codeRef" doxygen="qiodevice.tag:" href="qiodevice.html#close">QIODevice::close</a>();
<a name="l00247"></a>00247     }
<a name="l00248"></a>00248 
<a name="l00249"></a>00249     UNLOCK_MUTEX();
<a name="l00250"></a>00250 }
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<a class="anchor" name="7495b472b5e269d04c0c2e856901207f"></a><!-- doxytag: member="QextBaseType::construct" ref="7495b472b5e269d04c0c2e856901207f" args="()" -->
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          <td class="memname">void QextSerialBase::construct           </td>
          <td>(</td>
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          <td width="100%"><code> [virtual, inherited]</code></td>
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Common constructor function for setting up default port settings. (115200 Baud, 8N1, Hardware flow control where supported, otherwise no flow control, and 0 ms timeout). <div class="fragment"><pre class="fragment"><a name="l00062"></a>00062 {
<a name="l00063"></a>00063     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#be617f3545d6be4587e1a0700a0b0e5b">BaudRate</a>=<a class="code" href="qextserialbase_8h.html#6f031169a6a9b150b5af707bb23cf01054a5ab3e880bc1722d455e420c0351e6">BAUD115200</a>;
<a name="l00064"></a>00064     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#9ec9d5a304b2ac8d3a100d07bce7c0b6">DataBits</a>=<a class="code" href="qextserialbase_8h.html#189ef78c2c1b7537ab114d576f6214fa719dc653cb3f7c9fbf6c8b8c36d78a9f">DATA_8</a>;
<a name="l00065"></a>00065     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#8d0bfbdcb40e9e3919e3f9829ae72582">Parity</a>=<a class="code" href="qextserialbase_8h.html#ee22d32d87c815090354bf9b8e957acee0df16cbf90ff8b05d96d37094b3980a">PAR_NONE</a>;
<a name="l00066"></a>00066     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#0752c70eb7e12f02ddf59739a056b04c">StopBits</a>=<a class="code" href="qextserialbase_8h.html#dc8078895cd941d755d46633b54d3e7f5a97cec5fc7aa14a4caae4b53d97fcfc">STOP_1</a>;
<a name="l00067"></a>00067     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#10720f6217b8d8b90c326ea030c43e30">FlowControl</a>=<a class="code" href="qextserialbase_8h.html#02ad1c7cf791a069dd54e409f8db479037eb6a580629a080ce39792149cf4976">FLOW_HARDWARE</a>;
<a name="l00068"></a>00068     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#159ca543549b3b872917fc4ef0757b60">Timeout_Sec</a>=0;
<a name="l00069"></a>00069     <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#c1b008038ad143262a2ee18247fe2c39">Timeout_Millisec</a>=0;
<a name="l00070"></a>00070     <a class="code" href="classQextSerialBase.html#0c7cf6443ad80a05d51daaca5d0102ab">mutex</a> = <span class="keyword">new</span> QMutex( QMutex::Recursive );
<a name="l00071"></a>00071     <a class="codeRef" doxygen="qiodevice.tag:" href="qiodevice.html#setOpenMode">setOpenMode</a>(QIODevice::NotOpen);
<a name="l00072"></a>00072 }
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<a class="anchor" name="6836465ea5deaa1280e0e777e9c8651e"></a><!-- doxytag: member="QextBaseType::dataBits" ref="6836465ea5deaa1280e0e777e9c8651e" args="() const " -->
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          <td class="memname"><a class="el" href="qextserialbase_8h.html#189ef78c2c1b7537ab114d576f6214fa">DataBitsType</a> QextSerialBase::dataBits           </td>
          <td>(</td>
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          <td width="100%"> const<code> [virtual, inherited]</code></td>
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Returns the number of data bits used by the port. For a list of possible values returned by this function, see the definition of the enum DataBitsType. <div class="fragment"><pre class="fragment"><a name="l00113"></a>00113 {
<a name="l00114"></a>00114     <span class="keywordflow">return</span> <a class="code" href="classQextSerialBase.html#2d796e3080f78ff63e821f528439db57">Settings</a>.<a class="code" href="structPortSettings.html#9ec9d5a304b2ac8d3a100d07bce7c0b6">DataBits</a>;
<a name="l00115"></a>00115 }
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