workthreaddlg.cpp

通过源代码详细的介绍了VC++的用法

// WorkThreadDlg.cpp : implementation file
//

#include "stdafx.h"
#include "WorkThread.h"
#include "WorkThreadDlg.h"
#define WM_USERMSG WM_USER+100//自定义消息
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
int npercent;//定义全局变量
UINT ThreadFunc(LPVOID lpParam)
{
  ProgressInfo* pInfo=(ProgressInfo*)lpParam;//线程函数参数
  for(int i=pInfo->nstar;i<20;i++)
	{
		pInfo->pctrlProgress->StepIt();//进度条走一步，步距为5
		npercent=i*100/20;//进度条进度（百分比）
		if(npercent==50)//进度完成了一半
			::PostMessage(pInfo->hwnd,WM_USERMSG,0,0);//向主线程发送消息
		Sleep(1000);//进度条休息1000毫秒
	}	
  return 0;
}

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWorkThreadDlg dialog

CWorkThreadDlg::CWorkThreadDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWorkThreadDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWorkThreadDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CWorkThreadDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWorkThreadDlg)
	DDX_Control(pDX, IDC_CALPROGRESS, m_calprogress);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWorkThreadDlg, CDialog)
	//{{AFX_MSG_MAP(CWorkThreadDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_STAR, OnStar)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_BN_CLICKED(IDC_GOON, OnGoon)
	
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_USERMSG,OnMsg)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWorkThreadDlg message handlers

BOOL CWorkThreadDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	m_calprogress.SetRange(0,100);//设定进度条控件的范围
	m_calprogress.SetStep(5);//设定进度条控件的步距
	m_calprogress.SetPos(0);//设定进度条控件的初始值
	npercent=0;//进度赋初值
	GetDlgItem(IDC_STOP)->EnableWindow(false);
	GetDlgItem(IDC_GOON)->EnableWindow(false);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CWorkThreadDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CWorkThreadDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CWorkThreadDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


void CWorkThreadDlg::OnStar() 
{
	// TODO: Add your control notification handler code here
	info.pctrlProgress=&m_calprogress;//关联进度条对象
	info.nstar=0;//进度条从0开始
	info.hwnd=GetSafeHwnd();
	pThread=AfxBeginThread(ThreadFunc,&info);//创建新的线程并开始执行
	GetDlgItem(IDC_STAR)->EnableWindow(false);	
	GetDlgItem(IDC_STOP)->EnableWindow(true);	
}

void CWorkThreadDlg::OnStop() 
{
	// TODO: Add your control notification handler code here

	GetDlgItem(IDC_STOP)->EnableWindow(false);	
	GetDlgItem(IDC_GOON)->EnableWindow(true);
	pThread->SuspendThread();//挂起线程
	CString string;
	string.Format("工作线程已经停止，已经完成：%d",npercent);
	AfxMessageBox(string+"%");//弹出对话框显示进程进度
}

void CWorkThreadDlg::OnGoon() 
{
	// TODO: Add your control notification handler code here
	pThread->ResumeThread();//恢复线程
	GetDlgItem(IDC_STOP)->EnableWindow(true);
	GetDlgItem(IDC_GOON)->EnableWindow(false);
}

void CWorkThreadDlg::OnMsg() 
{
	// TODO: Add your control notification handler code here
	pThread->SuspendThread();//挂起线程
	AfxMessageBox("计算已经完成了一半！");//提示对话框
	pThread->ResumeThread();//恢复线程
}