thresholddlg.cpp

一个非常全的vc编程的原程序代码是关于图像处理的!

// ThresholdDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ViewDIB.h"
#include "ThresholdDlg.h"
#include "ViewDIBDoc.h"
#include "ViewDIBView.h"
#include "MainFrm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CThresholdDlg dialog


CThresholdDlg::CThresholdDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CThresholdDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CThresholdDlg)
	m_Value = 0;
	//}}AFX_DATA_INIT
}

void CThresholdDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CThresholdDlg)
	DDX_Text(pDX, IDC_EDIT1, m_Value);
	DDV_MinMaxLong(pDX, m_Value, 0, 255);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CThresholdDlg, CDialog)
	//{{AFX_MSG_MAP(CThresholdDlg)
	ON_WM_PAINT()
	ON_BN_CLICKED(IDC_BUTTON_OK, OnButtonOk)
	ON_BN_CLICKED(ID_FINISH, OnFinish)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CThresholdDlg message handlers

BOOL CThresholdDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
    return TRUE;
}

void CThresholdDlg::OnPaint()
{
	CPaintDC dc(this); 
	
	UpdateData(TRUE);
   
    //some prepare work for painting.
	CWnd* pWnd = GetDlgItem(IDC_G);
	CDC* pControlDC = pWnd->GetDC();
	pWnd->Invalidate();
	pWnd->UpdateWindow();
 
 	CPen penD;
	CBrush brush;
    CPen* pOldPen;
	CBrush* pOldBrush;
	penD.CreatePen(PS_SOLID, 2, RGB(0,0,0));
	brush.CreateSolidBrush(RGB(192, 192, 192));
	pOldBrush = pControlDC->SelectObject(&brush);
    pOldPen = pControlDC->SelectObject(&penD);
         
	//drow the histogram and color bar.
	pControlDC->Rectangle(0, 0, 258, 110);
    pControlDC->SelectObject(pOldBrush);
	
 	for(int i=0;i<256;i++)
		{
	        pOldPen = pControlDC->SelectObject(&penD);
			pControlDC->MoveTo(i+1, 110);
			pControlDC->LineTo(i+1, 110-m_L[i]);
			pControlDC->SelectObject(pOldPen);
		}

	//do the end work for paint.	
	pWnd->ReleaseDC(pControlDC);	
	UpdateData(FALSE);
}

void CThresholdDlg::OnButtonOk() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);

	CMainFrame* pCMainWnd = (CMainFrame*)GetParent();
	pCMainWnd->m_value = m_Value;
	pCMainWnd->OnBinary();

	UpdateData(FALSE);
	return;
}

void CThresholdDlg::OnFinish() 
{
	// TODO: Add your control notification handler code here
   OnOK();	
}