mutexview.cpp

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// MutexView.cpp : implementation of the CMutexView class
//

#include "stdafx.h"
#include "Mutex.h"

#include "MutexDoc.h"
#include "MutexView.h"
#include "afxmt.h"

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

CMutex mutex(FALSE,"mutex1"); // 声明一个名为mutex1的互斥量对象

/////////////////////////////////////////////////////////////////////////////
// CMutexView

IMPLEMENT_DYNCREATE(CMutexView, CView)

BEGIN_MESSAGE_MAP(CMutexView, CView)
	//{{AFX_MSG_MAP(CMutexView)
	ON_WM_LBUTTONDOWN()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMutexView construction/destruction

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

}

CMutexView::~CMutexView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMutexView drawing

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

/////////////////////////////////////////////////////////////////////////////
// CMutexView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMutexView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMutexView message handlers
/////////////////////////////////////////////////////////////////////////
//        下面为测试互斥量的线程函数
UINT MutexThread(LPVOID pParam)
{
    HWND hWnd = (HWND) pParam;  // 转换线程函数参数为窗口句柄

    ::MessageBox(hWnd, "线程开始执行。", // 弹出消息框告知用户线程开始执行
        "线程执行情况", MB_ICONEXCLAMATION | MB_OK);

    mutex.Lock(); // 锁定互斥量，如果成功就弹出消息框告知用户
    ::MessageBox(hWnd, "线程锁定互斥量。",
        "线程执行情况", MB_ICONEXCLAMATION | MB_OK);

    mutex.Unlock(); // 释放互斥量，并弹出消息框告知用户
    ::MessageBox(hWnd, "线程释放互斥量。",
        "线程执行情况", MB_ICONEXCLAMATION | MB_OK);

    return 0;
}


void CMutexView::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 (MutexThread, hWnd);  // 产生新的线程
	
	CView::OnLButtonDown(nFlags, point);
}