handeventview.cpp

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// HandEventView.cpp : implementation of the CHandEventView class
//

#include "stdafx.h"
#include "HandEvent.h"

#include "HandEventDoc.h"
#include "HandEventView.h"
#include "afxmt.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


CEvent eventObj(FALSE,TRUE);  //构造一个手动事件对象

/////////////////////////////////////////////////////////////////////////////
// CHandEventView

IMPLEMENT_DYNCREATE(CHandEventView, CView)

BEGIN_MESSAGE_MAP(CHandEventView, CView)
	//{{AFX_MSG_MAP(CHandEventView)
	ON_WM_LBUTTONDOWN()
	ON_WM_RBUTTONDOWN()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHandEventView construction/destruction

CHandEventView::CHandEventView()
{
	// TODO: add construction code here

}

CHandEventView::~CHandEventView()
{
}

BOOL CHandEventView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CHandEventView drawing

void CHandEventView::OnDraw(CDC* pDC)
{
	CHandEventDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CHandEventView printing

BOOL CHandEventView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CHandEventView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CHandEventView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CHandEventView diagnostics

#ifdef _DEBUG
void CHandEventView::AssertValid() const
{
	CView::AssertValid();
}

void CHandEventView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CHandEventDoc* CHandEventView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CHandEventDoc)));
	return (CHandEventDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CHandEventView message handlers

//////////////////////////////////////////////////////
//        下面的线程函数用来测试手动事件            //
//////////////////////////////////////////////////////
UINT EventThread(LPVOID pParam)
{
    static int threadNum = 0; // 线程计数器
	threadNum ++;  // 每产生一个新线程，计数器加1

    char str[81];  // 记录线程数量的字符串
    wsprintf(str, "第 %d个线程", threadNum); // 将计数器写入字符串

    HWND hWnd = (HWND) pParam;  // 将传入的线程函数参数转换为窗口句柄
	// 使用全局消息框函数MessageBox弹出消息框，告诉用户线程已经启动
    ::MessageBox(hWnd, str, "线程已启动", MB_ICONEXCLAMATION | MB_OK);

	eventObj.Lock(); // 等待事件有信号，等待过程中线程暂停执行（即被阻塞）。

	// 弹出消息框告知用户线程继续执行
	::MessageBox(hWnd, str, "线程继续执行", MB_ICONEXCLAMATION | MB_OK);
 
	return 0;
}


void CHandEventView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	HWND hWnd = GetSafeHwnd();  // 获取视图窗口的句柄
	AfxBeginThread(EventThread, hWnd);  // 产生一个工作线程，并将窗口句柄作为参数
	
	CView::OnLButtonDown(nFlags, point);
}

void CHandEventView::OnRButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	eventObj.SetEvent();  // 使手动事件有信号

	CView::OnRButtonDown(nFlags, point);
}