mythreadview.cpp

这是书上的代码

// MyThreadView.cpp : implementation of the CMyThreadView class
//

#include "stdafx.h"
#include "MyThread.h"

#include "MyThreadDoc.h"
#include "MyThreadView.h"
#include "UIThread.h"
#include "MainFrm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView

IMPLEMENT_DYNCREATE(CMyThreadView, CView)

BEGIN_MESSAGE_MAP(CMyThreadView, CView)
	//{{AFX_MSG_MAP(CMyThreadView)
	ON_COMMAND(ID_THREAD_RESUME, OnThreadResume)
	ON_COMMAND(ID_THREAD_SUSPEND, OnThreadSuspend)
	ON_COMMAND(ID_THREAD_UI, OnThreadUi)
	ON_COMMAND(ID_THREAD_WORKER, OnThreadWorker)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView construction/destruction

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

}

CMyThreadView::~CMyThreadView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView drawing

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

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMyThreadView message handlers

/////////////////////////////////////////////////////////////
//                  工作线程函数                           //
/////////////////////////////////////////////////////////////
UINT  ThreadProc(LPVOID ThreadParam)
{
	CDC * pDC;
	CMyThreadView * pView;

	//获取视图指针，注意包含头文件MainFrm.h
	CMainFrame * pFrame = (CMainFrame *)(AfxGetApp()->m_pMainWnd);
	pView = (CMyThreadView *)(pFrame->GetActiveView());

	pDC = pView->GetDC();  // 获取设备环境
	RECT rect;
	pView->GetClientRect(&rect);  // 获取客户区大小

	int  num = 0;//计数器

	CBrush  brush(HS_CROSS, RGB(0,255,0));// 构造一支阴影模式画刷，填充矩形内部
	CBrush * poldbrush = pDC->SelectObject(&brush);

	// 使用循环画矩形，达到动画效果	
	do{
		num ++;//计数器加1
		//画矩形。
		pDC->Rectangle(0,rect.bottom-(num/10),300,rect.bottom);
		//延迟
		Sleep(3); // 每画一个矩形延时3毫秒
	}while(num < 4000); // 循环4000次

	pDC->SelectObject(poldbrush); //落选画笔
	pView->ReleaseDC(pDC); // 释放设备环境

	return 1;
}

//唤醒工作线程
void CMyThreadView::OnThreadResume() 
{
	if(m_pThread)       // 如果工作线程指针非空
		m_pThread->ResumeThread();// 将线程挂起数-1
}

//挂起工作线程
void CMyThreadView::OnThreadSuspend() 
{
	if(m_pThread)       // 如果工作线程指针非空
		m_pThread->SuspendThread();// 将线程挂起数+1
}
//产生界面线程
void CMyThreadView::OnThreadUi() 
{
	//使用AfxBeginThread函数创建用户界面线程，
	//并保存新线程对象的指针到m_pUIThread中
	m_pUIThread = AfxBeginThread(RUNTIME_CLASS(CUIThread));// 线程类的执行期类指针
}

//产生工作线程
void CMyThreadView::OnThreadWorker() 
{
	//使用AfxBeginThread函数创建工作线程，
	//并保存新线程对象的指针到m_pThread中
	m_pThread = AfxBeginThread(ThreadProc,   // 全局线程函数名字
								0            // 传入的参数
								);  
}