dialog3dlg.h

在对话框程序中加入背景图像

// Dialog3Dlg.h : header file
//

#if !defined(AFX_DIALOG3DLG_H__3E9DC820_DC93_4256_B16C_ED3FF0E9ABFD__INCLUDED_)
#define AFX_DIALOG3DLG_H__3E9DC820_DC93_4256_B16C_ED3FF0E9ABFD__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

/////////////////////////////////////////////////////////////////////////////
// CDialog3Dlg dialog



class CDialog3Dlg : public CDialog
{
// Construction
public:
	CDialog3Dlg(CWnd* pParent = NULL);	// standard constructor
	
	CBitmap m_pBitmap;
	BOOL CDialog3Dlg::OnEraseBkgnd(CDC* pDC)
	{
		CBitmap m_pBitmap;
		CRect rect;
		GetClientRect(&rect);
		BITMAP bm;
		CDC dcMem;
		m_pBitmap.GetObject(sizeof(BITMAP),(LPVOID)&bm);
		dcMem.CreateCompatibleDC(NULL);
		CBitmap * pOldBitmap = dcMem.SelectObject(&m_pBitmap);
		pDC->StretchBlt(rect.left,rect.top,rect.Width(),rect.Height(),&dcMem,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY); 
		dcMem.SelectObject(pOldBitmap);
		return TRUE;
	}
	// Dialog Data
	//{{AFX_DATA(CDialog3Dlg)
	enum { IDD = IDD_DIALOG3_DIALOG };
		// NOTE: the ClassWizard will add data members here
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CDialog3Dlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(CDialog3Dlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_DIALOG3DLG_H__3E9DC820_DC93_4256_B16C_ED3FF0E9ABFD__INCLUDED_)