CBigImageDlg 类：MFC 对话框用于显示大型图像

// CBigImageDlg.cpp : implementation file
//
#include "stdafx.h"
#include "BigImageDlg.h"
#include "CMainFrame.h"
#include "CBsqViewView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBigImageDlg dialog

CBigImageDlg::CBigImageDlg(CWnd* pParent /*=NULL*/) : CDialog(CBigImageDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBigImageDlg)
	// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	//将视图类的变量转化为此类的
	CMainFrame* pframe = (CMainFrame *)AfxGetApp()->GetMainWnd();
	CMDIChildWnd* pChildWnd = pframe->MDIGetActive();
	CBsqViewView* pView = (CBsqViewView *) pChildWnd->GetActiveView();
	
    memset(AverageGrey, 0x00, sizeof(float)*240);
	Bands = pView->Bands;
	Width = pView->Width;
	Height = pView->Height;
	m_pathname = pView->m_pathname;
	HBig = pView->HBig;
	
	workmode = CommonMode;
	m_ldraw = FALSE;
	m_rdraw = FALSE;
	firstmouse_l = TRUE;
	firstmouse_r = TRUE;
	Areas = 0;
	
	for (int i = 1; i < 40; i++)
	{
		AreasBool[i] = true;
	}
	
	bChooseAreas = false;
	
	m_display = true;
	
}

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

BEGIN_MESSAGE_MAP(CBigImageDlg, CDialog)
	//{{AFX_MSG_MAP(CBigImageDlg)
	ON_WM_PAINT()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_RBUTTONDOWN()
	ON_WM_RBUTTONUP()
	ON_WM_LBUTTONDBLCLK()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBigImageDlg message handlers

void CBigImageDlg::OnPaint()
{
	CPaintDC dc(this); // device context for painting

	// TODO: Add your message handler code here
	CWnd *pWnd = GetDlgItem(IDC_BIG_IMAGE);
	CDC *pDC = pWnd->GetDC();
	CRect conRect;

	//获得该控件的矩形区域
	::GetClientRect(pWnd->m_hWnd, conRect);
	
	//设置窗口原点
	pDC->SetViewportOrg(conRect.left, conRect.top);

	//更新窗口
	pWnd->Invalidate();
	pWnd->UpdateWindow();	
	
    CMainFrame* pframe = (CMainFrame *)AfxGetApp()->GetMainWnd();
    CMDIChildWnd* pChildWnd = pframe->MDIGetActive();
    CBsqViewView* pView = (CBsqViewView *) pChildWnd->GetActiveView();
	
	pView->pBigPiData = (LPSTR)(pView->lpbigshowbuf);
	   
	//显示设备无关图到指定的坐标
	::SetDIBitsToDevice(pDC->m_hDC, 0, 0, pView->bgbi.biWidth, pView->bgbi.biHeight, 0, 0,
             0, pView->bgbi.biHeight, pView->pBigPiData, (BITMAPINFO *)&(pView->bgbi), DIB_RGB_COLORS);
	
}


void CBigImageDlg::PostNcDestroy()
{
	// TODO: Add your specialized code here and/or call the base class
	delete this;
	CDialog::PostNcDestroy();
}

void CBigImageDlg::PreSubclassWindow()
{
	// TODO: Add your specialized code here and/or call the base class
	
	CDialog::PreSubclassWindow();
}

BOOL CBigImageDlg::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Add your specialized code here and/or call the base class
	
	return CDialog::PreCreateWindow(cs);
}



void CBigImageDlg::OnMouseMove(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default
	CString str;
	CMainFrame* pFrame = (CMainFrame*)AfxGetApp()->m_pMainWnd;
	CStatusBar* pStatus = &pFrame->m_wndStatusBar;
	if (pStatus)
	{
		str.Format("X=%d", point.x);
		pStatus->SetPaneText(1, str);
		str.Format("Y=%d", point.y);
		pStatus->SetPaneText(2, str);
	}
	CDialog::OnMouseMove(nFlags, point);
}