CRectTracker的使用

// resizeDlg.cpp : implementation file // #include "stdafx.h" #include "resize.h" #include "resizeDlg.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() ///////////////////////////////////////////////////////////////////////////// // CResizeDlg dialog CResizeDlg::CResizeDlg(CWnd* pParent /*=NULL*/) : CDialog(CResizeDlg::IDD, pParent) { //{{AFX_DATA_INIT(CResizeDlg) m_cText = _T("Click The Start button to resize me !"); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m_tracker = NULL; } void CResizeDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CResizeDlg) DDX_Control(pDX, IDC_STOP, m_cmdStop); DDX_Control(pDX, IDC_START, m_cmdStart); DDX_Text(pDX, IDC_EDIT1, m_cText); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CResizeDlg, CDialog) //{{AFX_MSG_MAP(CResizeDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_START, OnStart) ON_BN_CLICKED(IDC_STOP, OnStop) ON_WM_SETCURSOR() ON_WM_LBUTTONDOWN() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CResizeDlg message handlers BOOL CResizeDlg::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 return TRUE; // return TRUE unless you set the focus to a control } void CResizeDlg::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 CResizeDlg::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 { if (m_tracker) { CDC* pDC = GetDC(); m_tracker->Draw(pDC); } CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CResizeDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CResizeDlg::OnStart() { CDC* pDC = GetDC(); if (m_tracker) { delete m_tracker; m_tracker = NULL; } LPRECT rect = new RECT; CWnd* wnd = (CWnd*)(GetDlgItem(IDC_EDIT1)); wnd->GetWindowRect(rect) ; ScreenToClient(rect) ; //pDC->LPtoDP(rect); m_tracker = new CRectTracker(rect,CRectTracker::dottedLine | CRectTracker::resizeOutside | CRectTracker::hatchedBorder ); m_tracker->Draw(pDC) ; delete rect; rect = NULL; } void CResizeDlg::OnStop() { if (m_tracker) { delete m_tracker; m_tracker = NULL; Invalidate(TRUE); } } BOOL CResizeDlg::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) { if (m_tracker) if (pWnd == this && m_tracker->SetCursor(this, nHitTest)) return TRUE; return CDialog::OnSetCursor(pWnd, nHitTest, message); } void CResizeDlg::OnLButtonDown(UINT nFlags, CPoint point) { if (m_tracker) { m_tracker->Track(this, point, TRUE); Invalidate(FALSE); CDC* pDC = GetDC(); m_tracker->Draw(pDC); LPRECT rect = new RECT; CWnd* wnd = (CWnd*)(GetDlgItem(IDC_EDIT1)); rect = LPRECT(m_tracker->m_rect); wnd->MoveWindow(rect,TRUE) ; rect = NULL; delete rect; rect = NULL; } CDialog::OnLButtonDown(nFlags, point); }