www.gusucode.com > VC 画直线源代码源码程序 > VC 画直线源代码源码程序/code/图形学Dlg.cpp
// 图形学Dlg.cpp : implementation file // Download by http://www.NewXing.com #include "stdafx.h" #include "图形学.h" #include "图形学Dlg.h" #include "Line.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CMyDlg dialog CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/) : CDialog(CMyDlg::IDD, pParent) { //{{AFX_DATA_INIT(CMyDlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CMyDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CMyDlg) // NOTE: the ClassWizard will add DDX and DDV calls here //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CMyDlg, CDialog) //{{AFX_MSG_MAP(CMyDlg) ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_LBUTTONDOWN() ON_WM_RBUTTONDOWN() //ON_BN_CLICKED(IDC_BUTTON1, OnButton1) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMyDlg message handlers BOOL CMyDlg::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 line.cwnd=this; 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 CMyDlg::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 { line.display(); CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CMyDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CMyDlg::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default line.can_be_display=false; line.point1=point; CDialog::OnLButtonDown(nFlags, point); } void CMyDlg::OnRButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default line.point2=point; line.can_be_display=true; Invalidate(TRUE); CDialog::OnRButtonDown(nFlags, point); }