一个十分不错的采用doc/view结构封装的Activex绘图程序

// Demo1View.cpp : implementation of the CDemo1View class // #include "stdafx.h" #include "resource.h" #include "Demo1Doc.h" #include "Demo1View.h" #include "Draw.h" #include "bitmap.h" #include <windowsx.h> #include "structure.h" #include "TextDlg.h" #define WIDTH_THIN 1 #define WIDTH_NORMAL 3 #define WIDTH_WIDE 5 #define UD_WHITE 0 #define UD_BLACK 0xffffff #define UD_YELLOW 0x00ffff #define UD_PINK 0xff80ff #define UD_CYAN 0xffff00 #define UD_GRAY 0x4080 #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CDemo1View IMPLEMENT_DYNCREATE(CDemo1View, CView) BEGIN_MESSAGE_MAP(CDemo1View, CView) //{{AFX_MSG_MAP(CDemo1View) ON_WM_LBUTTONDOWN() ON_WM_MOUSEMOVE() ON_WM_LBUTTONUP() ON_UPDATE_COMMAND_UI(IDT_SELECT, OnUpdateArrow) ON_UPDATE_COMMAND_UI(IDT_LINE, OnUpdateLine) ON_UPDATE_COMMAND_UI(IDT_RECTANGLE, OnUpdateRectangle) ON_UPDATE_COMMAND_UI(IDT_ELLIPSE, OnUpdateEllipse) ON_UPDATE_COMMAND_UI(IDT_CIRCLE, OnUpdateCircle) ON_UPDATE_COMMAND_UI(IDT_POLY, OnUpdatePline) ON_UPDATE_COMMAND_UI(IDT_FONT, OnUpdateFont) ON_COMMAND(IDT_LINE, OnLine) ON_COMMAND(IDT_RECTANGLE, OnRectangle) ON_COMMAND(IDT_ELLIPSE, OnEllipse) ON_COMMAND(IDT_CIRCLE, OnCircle) ON_COMMAND(IDT_FONT, OnFont) ON_COMMAND(ID_FILE_NEW, OnFileNew) ON_COMMAND(IDT_SELECT, OnSelect) ON_COMMAND(ID_EDIT_COPY, OnEditCopy) ON_COMMAND(ID_EDIT_CUT, OnEditCut) ON_COMMAND(ID_EDIT_PASTE, OnEditPaste) ON_COMMAND(ID_FILE_SAVE, OnFileSave) ON_COMMAND(ID_FILE_OPEN, OnFileOpen) ON_COMMAND(ID_COLOR_BLACK, OnColorBlack) ON_COMMAND(ID_COLOR_CYAN, OnColorCyan) ON_COMMAND(ID_COLOR_GRAY, OnColorGray) ON_COMMAND(ID_COLOR_GREEN, OnColorGreen) ON_COMMAND(ID_COLOR_PINK, OnColorPink) ON_COMMAND(ID_COLOR_RED, OnColorRed) ON_COMMAND(ID_COLOR_WHITE, OnColorWhite) ON_COMMAND(ID_COLOR_YELLOW, OnColorYellow) ON_COMMAND(ID_COLOR_BLUE, OnColorBlue) ON_UPDATE_COMMAND_UI(ID_EDIT_CUT, OnUpdateEditCut) ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste) ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy) ON_UPDATE_COMMAND_UI(IDT_SELECT, OnUpdateSelect) ON_COMMAND(ID_EDIT_REDO, OnEditRedo) ON_UPDATE_COMMAND_UI(ID_EDIT_REDO, OnUpdateEditRedo) ON_COMMAND(ID_EDIT_UNDO, OnEditUndo) ON_UPDATE_COMMAND_UI(ID_EDIT_UNDO, OnUpdateEditUndo) ON_WM_PAINT() ON_COMMAND(IDT_CURVE, OnCurve) ON_COMMAND(IDT_POLY, OnPoly) ON_WM_LBUTTONDBLCLK() ON_COMMAND(ID_WIDTH_NORMAL, OnWidthNormal) ON_COMMAND(ID_WIDTH_THIN, OnWidthThin) ON_COMMAND(ID_WIDTH_WIDE, OnWidthWide) ON_COMMAND(ID_FILL_FALSE, OnFillFalse) ON_COMMAND(ID_FILL_TRUE, OnFillTrue) ON_UPDATE_COMMAND_UI(ID_FILL_TRUE, OnUpdateFillTrue) ON_UPDATE_COMMAND_UI(ID_FILL_FALSE, OnUpdateFillFalse) ON_UPDATE_COMMAND_UI(ID_WIDTH_NORMAL, OnUpdateWidthNormal) ON_UPDATE_COMMAND_UI(ID_WIDTH_THIN, OnUpdateWidthThin) ON_UPDATE_COMMAND_UI(ID_WIDTH_WIDE, OnUpdateWidthWide) ON_UPDATE_COMMAND_UI(IDT_CURVE, OnUpdateCurve) ON_UPDATE_COMMAND_UI(ID_COLOR_BLACK, OnUpdateColorBlack) ON_UPDATE_COMMAND_UI(ID_COLOR_BLUE, OnUpdateColorBlue) ON_UPDATE_COMMAND_UI(ID_COLOR_CYAN, OnUpdateColorCyan) ON_UPDATE_COMMAND_UI(ID_COLOR_GRAY, OnUpdateColorGray) ON_UPDATE_COMMAND_UI(ID_COLOR_GREEN, OnUpdateColorGreen) ON_UPDATE_COMMAND_UI(ID_COLOR_PINK, OnUpdateColorPink) ON_UPDATE_COMMAND_UI(ID_COLOR_RED, OnUpdateColorRed) ON_UPDATE_COMMAND_UI(ID_COLOR_WHITE, OnUpdateColorWhite) ON_UPDATE_COMMAND_UI(ID_COLOR_YELLOW, OnUpdateColorYellow) //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CDemo1View construction/destruction CDemo1View::CDemo1View() { // TODO: add construction code here m_bDrawing=false; m_nMouseMode = IDT_LINE; m_usrCurrentObject = NULL; m_nCurrentColor = UD_RED; m_iPenWidth = WIDTH_THIN; m_bFill = false; m_pSelect = NULL; //没有选中区域 m_bClip = false; //剪贴扳为空 virtualline=false; m_pStack =new Stack(3); //栈的大小 m_bFirstSave = true; //可以保存空白屏幕 m_bShowGrid = false; } CDemo1View::~CDemo1View() { if(m_pSelect) { delete m_pSelect; m_pSelect = NULL; } if(m_pStack) { delete m_pStack; m_pStack = NULL; } if(m_usrCurrentObject) { delete m_usrCurrentObject; m_usrCurrentObject = NULL; } } BOOL CDemo1View::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs //加载自定义光标资源 m_hcurCross = (HCURSOR)::LoadImage(cs.hInstance, MAKEINTRESOURCE(IDC_USERDRAW), IMAGE_CURSOR, 32, 32, LR_DEFAULTCOLOR); //加载光标的类方法(与上述方法功能类似) CWinApp* pApp = ::AfxGetApp();//获得当前CWinApp对象指针 m_hcurMoving = pApp->LoadCursor(IDC_USERMOVING); m_hcurArrow = pApp->LoadCursor(IDC_USERARROW); return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CDemo1View drawing void CDemo1View::OnDraw(CDC* pDC) { CDemo1Doc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here } ///////////////////////////////////////////////////////////////////////////// // CDemo1View printing BOOL CDemo1View::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CDemo1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CDemo1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CDemo1View diagnostics #ifdef _DEBUG void CDemo1View::AssertValid() const { CView::AssertValid(); } void CDemo1View::Dump(CDumpContext& dc) const { CView::Dump(dc); } CDemo1Doc* CDemo1View::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDemo1Doc))); return (CDemo1Doc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CDemo1View message handlers void CDemo1View::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default CDC* pDC = GetDC();//获得DC OnPrepareDC(pDC);//设置DC的滚动属性，与ScollView的滚动有关 pDC->DPtoLP(&point);//转换当前点为逻辑位置坐标 CDemo1Doc* pDoc = GetDocument(); CRect client; GetClientRect(&client);//获得客户区范围 ClientToScreen(&client);//转化为屏幕坐标 ::ClipCursor(&client);//锁定鼠标移动范围 switch(m_nMouseMode) { case IDT_SELECT: if(!m_pSelect)//如果没选中 { m_bDrawing = true; m_pSelect = new CDrawSelect(m_nCurrentColor); m_pSelect->NewPoint(point.x, point.y); break; } else//如果选中 { CDC * pDC = GetDC(); m_pSelect->Clear(pDC); m_bDrawing = false; if (m_pSelect->isin(point))//如果鼠标进入 { m_pSelect->maponmouse=true; m_pSelect->p_maponmouse.x=point.x; m_pSelect->p_maponmouse.y=point.y; if (!(m_pSelect->copied))//如果没有存储两个图 { m_pSelect->maponmouse=true; m_pSelect->copied=true; Selected_Copy(); Back_CutCopy(); ReleaseDC(pDC); } break; } else//如果落在选中的矩形外边 { virtualline=false; delete m_pSelect; m_pSelect = NULL; break; } } case IDT_LINE: m_bDrawing = true; m_usrCurrentObject = new CDrawLine(m_nCurrentColor, m_iPenWidth); m_usrCurrentObject->NewPoint(point.x, point.y); break; case IDT_CURVE: m_bD