设置背景图的例程，VC6.0编写

// bkImgDlg.cpp : implementation file // #include "stdafx.h" #include "bkImg.h" #include "bkImgDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CBkImgDlg dialog CBkImgDlg::CBkImgDlg(CWnd* pParent /*=NULL*/) : CDialog(CBkImgDlg::IDD, pParent) { //{{AFX_DATA_INIT(CBkImgDlg) //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CBkImgDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CBkImgDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CBkImgDlg, CDialog) //{{AFX_MSG_MAP(CBkImgDlg) ON_WM_PAINT() ON_WM_QUERYDRAGICON() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CBkImgDlg message handlers BOOL CBkImgDlg::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 // TODO: Add extra initialization here m_pic1.SubclassWindow( m_hWnd ); m_pic1.m_nMessageHandler = CPictureWindow::BackGroundPaint; m_pic1.Load("dlg_bk.bmp"); return TRUE; // return TRUE unless you set the focus to a control } // 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 CBkImgDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (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 { CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CBkImgDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; }