<span style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap">1.线程函数</span>
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<span style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap"> 在启动一个线程之前，必须为线程编写一个全局的线程函数，这个线程函数接受一个32位的LPVOID作为参数，返回一个UINT，线程函数的结构为：</span>
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<table align="center" bgcolor="#e3e3e3" border="1" style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap; word-wrap:break-word" width="90%"><tbody style="word-wrap:break-word"><tr style="word-wrap:break-word"><td style="word-wrap:break-word; margin:0px; padding:0px">UINT ThreadFunction(LPVOID pParam)<br style="word-wrap:break-word"> {<!-- --><br style="word-wrap:break-word"> //线程处理代码<br style="word-wrap:break-word"> return0;<br style="word-wrap:break-word"> }</td></tr></tbody></table>
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<span style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap"> 在线程处理代码部分通常包括一个死循环，该循环中先等待某事情的发生，再处理相关的工作：</span>
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<table align="center" bgcolor="#e3e3e3" border="1" style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap; word-wrap:break-word" width="90%"><tbody style="word-wrap:break-word"><tr style="word-wrap:break-word"><td style="word-wrap:break-word; margin:0px; padding:0px">while(1)<br style="word-wrap:break-word"> {<!-- --><br style="word-wrap:break-word"> WaitForSingleObject(…,…);//或WaitForMultipleObjects(…)<br style="word-wrap:break-word"> //Do something<br style="word-wrap:break-word"> }</td></tr></tbody></table>
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<span style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap"> 一般来说，C++的类成员函数不能作为线程函数。这是因为在类中定义的成员函数，编译器会给其加上this指针。请看下列程序：</span>
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<table align="center" bgcolor="#e3e3e3" border="1" style="color:rgb(102,102,102); font-family:monospace; font-size:16px; line-height:26px; white-space:pre-wrap; word-wrap:break-word" width="90%"><tbody style="word-wrap:break-word"><tr style="word-wrap:break-word"><td style="word-wrap:break-word; margin:0px; padding:0px">#include "windows.h"<br style="word-wrap:break-word"> #include <br style="word-wrap:break-word"> class ExampleTask <br style="word-wrap:break-word"> { <br style="word-wrap:break-word"> public: <br style="word-wrap:break-word"> void taskmain(LPVOID param); <br style="word-wrap:break-word"> void StartTask(); <br style="word-wrap:break-word"> }; <br style="word-wrap:break-word"> void ExampleTask::taskmain(LPVOID param) <br style="word-wrap:break-word"> {} <br style="word-wrap:break-word"> <br style="word-wrap:break-word"> void ExampleTask::StartTask() <br style="word-wrap:break-word"> { <br style="word-wrap:break-word"> _beginthread(taskmain,0,NULL);<br style="word-wrap:break-word"> } <br style="word-wrap:break-word"> <br style="word-wrap:break-word"> int main(int argc, char* argv[])<br style="word-wrap:break-word"> {<!-- --><br style="word-wrap:break-word"> ExampleTask realTimeTask;<br style="word-wrap:break-word"> realTimeTask.StartTask();<br style="word-wrap:break-word"> return 0;<br style="word-wrap:break-word"> }</td></tr></tbody></table>
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