滴水 2.27 --事件

	4、线程控制实验：只读形式的线程控制				
					
	HANDLE g_hEvent;				
					
	HWND hEdit1;				
	HWND hEdit2;				
	HWND hEdit3;				
	HWND hEdit4;				
	HANDLE hThread1;				
	HANDLE hThread2;				
	HANDLE hThread3;				
	HANDLE hThread4;				
					
	DWORD WINAPI ThreadProc1(LPVOID lpParameter)				
	{				
		//创建事件			
		//默认安全属性  手动设置未通知状态(TRUE)  初始状态未通知 没有名字 			
		g_hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);			
		HANDLE　hThread[3];			
		//创建3个线程			
		hThread[0] = ::CreateThread(NULL, 0, ThreadProc2, NULL, 0, NULL);			
		hThread[1] = ::CreateThread(NULL, 0, ThreadProc3, NULL, 0, NULL);			
		hThread[2] = ::CreateThread(NULL, 0, ThreadProc4, NULL, 0, NULL);			
					
		//设置文本框的值			
		SetWindowText(hEdit1,"1000");			
					
		//设置事件为已通知			
		SetEvent(g_hEvent);			
					
		//等待线程结束 销毁内核对象			
		WaitForMultipleObjects(3, hThread, TRUE, INFINITE);  			
		CloseHandle(hThread[0]);  			
		CloseHandle(hThread[1]);			
		CloseHandle(hThread[2]);			
		CloseHandle(g_hEvent);  			
					
		return 0;			
	}				
					
	DWORD WINAPI ThreadProc2(LPVOID lpParameter)				
	{				
		TCHAR szBuffer[10] = {0};			
					
		//当事件变成已通知时 			
		WaitForSingleObject(g_hEvent, INFINITE);			
					
		//读取内容			
		GetWindowText(hEdit1,szBuffer,10);			
					
		SetWindowText(hEdit2,szBuffer);			
					
		return 0;			
	}				
	DWORD WINAPI ThreadProc3(LPVOID lpParameter)				
	{				
		TCHAR szBuffer[10] = {0};			
					
		//当事件变成已通知时 			
		WaitForSingleObject(g_hEvent, INFINITE);			
					
		//读取内容			
		GetWindowText(hEdit1,szBuffer,10);			
					
		SetWindowText(hEdit3,szBuffer);			
					
		return 0;			
	}				
	DWORD WINAPI ThreadProc4(LPVOID lpParameter)				
	{				
		TCHAR szBuffer[10] = {0};			
					
		//当事件变成已通知时 			
		WaitForSingleObject(g_hEvent, INFINITE);			
					
		//读取内容			
		GetWindowText(hEdit1,szBuffer,10);			
					
		SetWindowText(hEdit4,szBuffer);			
					
		return 0;			
	}