drawcurvedlg.cpp

wince下的画二维曲线的的一个程序

// drawcurveDlg.cpp : implementation file
//

#include "stdafx.h"
#include "drawcurve.h"
#include "drawcurveDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDrawcurveDlg dialog

CDrawcurveDlg::CDrawcurveDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDrawcurveDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDrawcurveDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    CDrawcurveDlg::RegisterWndClass(AfxGetInstanceHandle());
	m_bStartStop = FALSE;

	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	
	m_dXValue[0] = 0.5;m_dXValue[1] = 1;m_dXValue[2] = 2;m_dXValue[3] = 3.5;
	m_dXValue[4] = 5;m_dXValue[5] = 6;m_dXValue[6] = 7;m_dXValue[7] = 8;

	m_dYValue[0] = 2;m_dYValue[1] = 3;m_dYValue[2] = 4;m_dYValue[3] = 5.5;
	m_dYValue[4] = 7;m_dYValue[5] = 8;m_dYValue[6] = 8.5;m_dYValue[7] = 9;
	m_nTimerIndex = 0;

}

void CDrawcurveDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDrawcurveDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDrawcurveDlg, CDialog)
	//{{AFX_MSG_MAP(CDrawcurveDlg)
	ON_BN_CLICKED(IDC_BUTTON1, OnRunOrStop)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDrawcurveDlg message handlers

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

	// 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
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
		CRect rect;
	GetDlgItem(IDC_GRAPH_CUSTOM1)->GetWindowRect(rect) ;
	ScreenToClient(rect) ;
	GetDlgItem(IDC_GRAPH_CUSTOM1)->ShowWindow(SW_HIDE);

	// create the control
	m_oGraphCtrl.Create(WS_VISIBLE | WS_CHILD, rect, this) ; 
	m_oGraphCtrl.SetXRange(0,10,2);
	m_oGraphCtrl.SetRange(0, 10, 2) ;
	
    m_oGraphCtrl.SetYUnits("Volume in ml") ;
    m_oGraphCtrl.SetXUnits("Time in seconds") ;
    m_oGraphCtrl.SetBackgroundColor(RGB(0, 0, 64)) ;
    m_oGraphCtrl.SetGridColor(RGB(192, 192, 255)) ;
    m_oGraphCtrl.SetPlotColor(RGB(0, 255, 0)) ;
	return TRUE;  // return TRUE  unless you set the focus to a control
}

BOOL CDrawcurveDlg::RegisterWndClass(HINSTANCE hInstance)
{
	WNDCLASS wc;
	wc.lpszClassName = _T("GRAPH_CUSTOM1"); // matches class name in client
	wc.hInstance = hInstance;
	wc.lpfnWndProc = ::DefWindowProc;
	//wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hIcon = 0;
	wc.lpszMenuName = NULL;
	wc.hbrBackground = (HBRUSH) ::GetStockObject(LTGRAY_BRUSH);
	wc.style = CS_GLOBALCLASS; // To be modified
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;

	return (::RegisterClass(&wc) != 0);
}


void CDrawcurveDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
		double nRandomY, nRandomX;

	// generate a random number between 0 and 10
	//nRandomY = 10.0*rand()/(double)RAND_MAX;
	//nRandomX = 10.0*rand()/(double)RAND_MAX;

	if(m_nTimerIndex == 8) KillTimer(1);
	nRandomX = m_dXValue[m_nTimerIndex];
	nRandomY = m_dYValue[m_nTimerIndex];
	m_nTimerIndex++;
	// append the new value to the plot
	m_oGraphCtrl.AppendPoint(nRandomX, nRandomY);

	CDialog::OnTimer(nIDEvent);
}


void CDrawcurveDlg::OnRunOrStop() 
{
	// TODO: Add your control notification handler code here
		m_bStartStop ^= TRUE;

	  if (m_bStartStop)
		SetTimer(1,100,NULL);
	  else
		KillTimer(1);
}