C++利用Windows API 创建多线程

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//上面的例子是基于互斥对象的，这个是基于事件对象的
#include<windows.h>
#include<iostream.h>
DWORD WINAPI Fun1Proc(LPVOID lpParameter);//thread data
DWORD WINAPI Fun2Proc(LPVOID lpParameter);//thread data
int tickets=100;
HANDLE g_hEvent;
void main(){
HANDLE hThread1; HANDLE hThread2;
//创建人工重置事件内核对象
g_hEvent=CreateEvent(NULL,FALSE,FALSE,"tickets");
if (g_hEvent) {
   if (ERROR_ALREADY_EXISTS==GetLastError()) {
   cout<<"only one instance can run!"<<endl;
           return;
}
}
SetEvent(g_hEvent);
//创建线程
hThread1=CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
hThread2=CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
CloseHandle(hThread1);
CloseHandle(hThread2);
//让主线程睡眠4秒
Sleep(4000);
//关闭事件对象句柄
CloseHandle(g_hEvent);
}
//线程1的入口函数
DWORD WINAPI Fun1Proc(LPVOID lpParameter)//thread data{
while (true) {
   WaitForSingleObject(g_hEvent,INFINITE);
    //ResetEvent(g_hEvent);
    if (tickets>0) {
Sleep(1);
         cout<<"thread1 sell ticket :"<<tickets--<<endl;
   SetEvent(g_hEvent);
} else {
         SetEvent(g_hEvent);
         break;
    }
}
return 0;
}

//线程2的入口函数
DWORD WINAPI Fun2Proc(LPVOID lpParameter)//thread data{
while (true) {
//请求事件对象
WaitForSingleObject(g_hEvent,INFINITE);
//ResetEvent(g_hEvent);
if (tickets>0) {
   Sleep(1);
   cout<<"thread2 sell ticket :"<<tickets--<<endl;
   SetEvent(g_hEvent);
} else {
SetEvent(g_hEvent);
break;
}
}
return 0;
}