Threads And Timers

// MFCThreadTimerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MFCThreadTimer.h"
#include "MFCThreadTimerDlg.h"
#include ".\mfcthreadtimerdlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

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

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
};

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

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

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CMFCThreadTimerDlg dialog
BEGIN_DHTML_EVENT_MAP(CMFCThreadTimerDlg)
	DHTML_EVENT_ONCLICK(_T("ButtonOK"),				OnButtonOK)
	DHTML_EVENT_ONCLICK(_T("ButtonCancel"),			OnButtonCancel)
END_DHTML_EVENT_MAP()


CMFCThreadTimerDlg::CMFCThreadTimerDlg(CWnd* pParent /*=NULL*/)
	: CDHtmlDialog(CMFCThreadTimerDlg::IDD, CMFCThreadTimerDlg::IDH, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMFCThreadTimerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDHtmlDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_NUMBEROFTHREADS, m_SliderNumberofThreads);
	DDX_Control(pDX, IDC_LIST2, m_LogList);
}

BEGIN_MESSAGE_MAP(CMFCThreadTimerDlg, CDHtmlDialog)
	ON_WM_SYSCOMMAND()
	ON_MESSAGE(LOGMSG,								OnLogMessage)
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_STARTTHREAD,					OnStartThreads)
	ON_BN_CLICKED(IDC_STOPTHREAD,					OnStopThreads)
END_MESSAGE_MAP()


// CMFCThreadTimerDlg message handlers

BOOL CMFCThreadTimerDlg::OnInitDialog()
{
	CDHtmlDialog::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

	m_SliderNumberofThreads.SetRange(1, 100, true);
	m_SliderNumberofThreads.SetTicFreq( 10 );
	UpdateData(TRUE);
	//
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMFCThreadTimerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDHtmlDialog::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 CMFCThreadTimerDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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
	{
		CDHtmlDialog::OnPaint();
	}
}

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMFCThreadTimerDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}
HRESULT CMFCThreadTimerDlg::OnButtonOK(IHTMLElement* /*pElement*/)
{
	OnOK();
	return S_OK;
}

HRESULT CMFCThreadTimerDlg::OnButtonCancel(IHTMLElement* /*pElement*/)
{
	OnCancel();
	return S_OK;
}

void CMFCThreadTimerDlg::OnStartThreads()
{
	CMyThread *pThread;
	int i;
	int numthreads = m_SliderNumberofThreads.GetPos();

	for (i=0; i < numthreads; i++)
	{
		pThread = (CMyThread*) AfxBeginThread(	RUNTIME_CLASS(CMyThread),
												THREAD_PRIORITY_NORMAL,
												NULL,
												CREATE_SUSPENDED, 
												NULL);
		if (pThread)
		{
			m_ThreadList.Add(pThread);
			pThread->SetLogWindow(this);
			pThread->ResumeThread();
		}
	}
}

void CMFCThreadTimerDlg::OnStopThreads()
{
	int i;

	// send a quit message to all threads
	for (i=0; i <= m_ThreadList.GetUpperBound(); i++)
	{
		// tell the thread to quit
		m_ThreadList[i]->PostThreadMessage(WM_QUIT, NULL, NULL);
	}
	// remove the thread objects from the list
	m_ThreadList.RemoveAll();
	//
}
 LRESULT CMFCThreadTimerDlg::OnLogMessage(WPARAM wparam, LPARAM lparam)
 {
	 CString* pLogMessage = (CString*) wparam;

	 m_LogList.AddString( *pLogMessage);

     return UpdateData(FALSE);
 }

 void CMFCThreadTimerDlg::OnBnClickedStartthread()
 {
	 // TODO: Add your control notification handler code here
 }