www.gusucode.com > VC 获取位图图像大小 > VC 获取位图图像大小/gusucode/PicSizeDlg.cpp
//Download by http://www.NewXing.com // PicSizeDlg.cpp : implementation file // #include "stdafx.h" #include "PicSize.h" #include "PicSizeDlg.h" #include "afxdlgs.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App About class CAboutDlg : public CDialog { public: CAboutDlg(); // Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL // Implementation protected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CPicSizeDlg dialog CPicSizeDlg::CPicSizeDlg(CWnd* pParent /*=NULL*/) : CDialog(CPicSizeDlg::IDD, pParent) { //{{AFX_DATA_INIT(CPicSizeDlg) m_strFile = _T(""); m_strHeight = _T(""); m_strWidth = _T(""); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CPicSizeDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CPicSizeDlg) DDX_Text(pDX, IDC_FILE, m_strFile); DDX_Text(pDX, IDC_HEIGHT, m_strHeight); DDX_Text(pDX, IDC_WIDTH, m_strWidth); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CPicSizeDlg, CDialog) //{{AFX_MSG_MAP(CPicSizeDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BROWSE, OnBrowse) ON_BN_CLICKED(IDC_GETSIZE, OnGetsize) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CPicSizeDlg message handlers BOOL CPicSizeDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } // 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 return TRUE; // return TRUE unless you set the focus to a control } void CPicSizeDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // 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 CPicSizeDlg::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 CPicSizeDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CPicSizeDlg::OnBrowse() { //构造文件对话框,并过滤掉所有非bmp的文件 CFileDialog dlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, "Bmp Files(*.bmp)|*.bmp|",NULL); if(dlg.DoModal()) { //获得文件的完整路径 m_strFile = dlg.GetPathName(); UpdateData(FALSE); } } void CPicSizeDlg::OnGetsize() { UpdateData(TRUE); //m_strFile是位图文件的路径 if(m_strFile == "") { AfxMessageBox("请选择文件"); } CFile file; if( !file.Open( m_strFile, CFile::modeRead) ) return ; BITMAPFILEHEADER bmfHeader; //读位图文件头信息 if (file.Read((LPSTR)&bmfHeader, sizeof(bmfHeader)) != sizeof(bmfHeader)) return ; //判断是否是BMP if (bmfHeader.bfType != ((WORD) ('M' << 8) | 'B')) return ; //读位图头信息 BITMAPINFOHEADER bmiHeader; if (file.Read((LPSTR)&bmiHeader, sizeof(bmiHeader)) !=sizeof(bmiHeader)) return ; //获得大小信息,并显示 int bmWidth=bmiHeader.biWidth; int bmHeight=bmiHeader.biHeight; m_strWidth.Format("宽度:%d",bmWidth); m_strHeight.Format("高度:%d",bmHeight); UpdateData(FALSE); }