GDI+和GDI的一些基本图形描绘方法函数对比

GDI+

GDI

// 清空背景 SolidBrush brush(Color(255, 255,255,255)); using namespace Gdiplus; pGraphics->FillRectangle(&brush,0,0,m_winWidth,m_winHeight); //------------------------------------------- // 画笔准备 int PenWidth = theApp.m_optionDlg.m_iSliderPenWidth; Pen pen(Color(255, 0, 0, 255), PenWidth); Pen pen2(Color(255, 255, 0, 0), PenWidth); //------------------------------------------- // 画对角线 pGraphics->DrawLine(&pen,pRect->left,pRect->top,pRect->right, pRect->bottom); pGraphics->DrawLine(&pen,pRect->right,pRect->top,pRect->left, pRect->bottom); //------------------------------------------- // 画格子 for (int y = 0; y < m_winHeight; y += 10) { pGraphics->DrawLine(&pen, 0, y, m_winWidth, y); } for (int x = 0; x < m_winWidth; x += 10) { pGraphics->DrawLine(&pen, x, 0, x, m_winHeight); } //------------------------------------------- // 画圆弧 pGraphics->DrawArc(&pen2, 0,0, 100,100, 0.0f,360.0f); //------------------------------------------- //画填充多边形 SolidBrush fillPolyBrush(Color(128, 255, 0, 0)); Point point1(100, 100); Point point2(200, 130); Point point3(250, 160); Point point4(150, 200); Point point5( 70, 130); Point points[5] = {point1, point2, point3, point4, point5}; pGraphics->FillPolygon(&fillPolyBrush, points, 5); //------------------------------------------- // 字符串 if (theApp.m_optionDlg.m_strDrawString != "") { // UNICODE 字串变换 _bstr_t bstr(theApp.m_optionDlg.m_strDrawString ); Font myFont(L"Arial", 42); PointF origin( 0.0f, 0.0f); SolidBrush blackBrush(Color(255, 0, 0, 0)); StringFormat format; format.SetAlignment (StringAlignmentCenter); pGraphics->DrawString( bstr, bstr.length(), &myFont, origin, &blackBrush); }

// 清空背景 CBrush brush; brush.CreateSolidBrush (RGB(255, 255, 255)); //------------------------------------------- //初始画刷保存 CBrush OrigBrush; CBrush *pTmpBrush = (CBrush*)pDC->SelectObject(brush); OrigBrush.FromHandle ((HBRUSH)pTmpBrush); pDC->Rectangle(pRect); pDC->SelectObject(&OrigBrush); brush.DeleteObject (); //------------------------------------------- // 画笔准备 int PenWidth = theApp.m_optionDlg.m_iSliderPenWidth; CPen pen(PS_SOLID, PenWidth, RGB(0, 0, 255)); CPen pen2(PS_SOLID, PenWidth, RGB(255, 0, 0)); //初始画笔保存 CPen OrigPen; CPen *pTmpPen = (CPen*)pDC->SelectObject(pen); OrigPen.FromHandle ((HPEN)pTmpPen); //------------------------------------------- // 画笔准备 pDC->MoveTo(pRect->left, pRect->top); pDC->LineTo(pRect->right, pRect->bottom); pDC->MoveTo(pRect->right, pRect->top); pDC->LineTo(pRect->left, pRect->bottom); //------------------------------------------- // 画格子 for (int y = 0; y < m_winHeight; y += 10) { pDC->MoveTo(0, y); pDC->LineTo(m_winWidth, y);} for (int x = 0; x < m_winWidth; x += 10) { pDC->MoveTo(x, 0); pDC->LineTo(x, m_winHeight);} pDC->SelectObject(&OrigPen); pen.DeleteObject (); //------------------------------------------- // 画圆弧 long width, height; POINT cpos; double r,srad,erad; const double m_pi = 3.1415926535758932; width = 100 - 0; height = 100 - 0; cpos.x = 0 + (long)(width / 2.0); cpos.y = 0 + (long)(height / 2.0); r = max(width / 2.0, height / 2.0); srad = 0.0 * m_pi / 180.0; erad = (0.0 + 360.0) * m_pi / 180.0; pTmpPen = (CPen*)pDC->SelectObject(pen2); pDC->Arc(0,0, 100,100, cpos.x + (long)(r * cos(srad)), cpos.y + (long)(r * sin(srad)), cpos.x + (long)(r * cos(erad)), cpos.y + (long)(r * sin(erad))); pDC->SelectObject(&OrigPen); pen2.DeleteObject (); //------------------------------------------- //画填充多边形 CBrush fillPolyBrush; fillPolyBrush.CreateSolidBrush (RGB(255, 0, 0)); pTmpBrush = (CBrush*)pDC->SelectObject(fillPolyBrush); CPoint point1(100, 100); CPoint point2(200, 130); CPoint point3(250, 160); CPoint point4(150, 200); CPoint point5( 70, 130); CPoint points[5] = {point1, point2, point3, point4, point5}; pDC->Polygon(points, 5); pDC->SelectObject(&OrigBrush); fillPolyBrush.DeleteObject (); //------------------------------------------- // 字符串 if (theApp.m_optionDlg.m_strDrawString != "") { //UNICODE 字串变换 _bstr_t bstr(theApp.m_optionDlg.m_strDrawString ); CFont myFont; CFont OrigFont; myFont.CreatePointFont (420, "Arial"); CFont *pTmpFont = (CFont*)pDC->SelectObject(myFont); OrigFont.FromHandle ((HFONT)pTmpFont); CBrush blackBrush; blackBrush.CreateSolidBrush (RGB(0, 0, 0)); pTmpBrush = (CBrush*)pDC->SelectObject(blackBrush); //pDC->SetTextAlign(TA_CENTER); pDC->TextOut(0, 0, bstr, bstr.length()); pDC->SelectObject(&OrigFont); myFont.DeleteObject(); }

GDI+与GDI绘图函数的对比

GDI+ GDI 备注

轮廓线 填充

DrawArc - Arc 圆弧

- - AngleArc 线段和圆弧

- - ArcTo 椭圆的圆弧

- - Chord 圆弧和线段组成的半月形

DrawEllipse FillEllipse Ellipse 圆和椭圆

DrawPie FillPie Pie 扇形

DrawLine - LineTo MoveToEx 从现在位置开始到终点的直线

DrawLines - Polyline PolyLineTo 一组线段组成的线段群

- - PolyPolyline 一组线段群

DrawPolygon FillPolygon Polygon 多边形

- - PolyPolygon 一组多边形

DrawBezier　 - - 由 4个点定义的贝塞尔曲线

DrawBeziers - PolyBezier PolyBezierTo 一个以上的贝塞尔曲线

DrawPath FillPath FillPath 路径

DrawRectangle FillRectangle Rectangle 矩形

DrawRectangles FillRectangles - 一组矩形

- - RoundRect 圆弧端角的矩形

- FillRegion PaintRgn FillRgn Region 内部填充

DrawString - TextOut 字符串

DrawClosedCurve FillClosedCurve - 闭合 Curve曲线

DrawCurve - - Curve 曲线

DrawIcon - - 在指定坐标处绘制由指定的 Icon 对象表示的图像。

DrawIconUnstretched - - Icon 对象表示的图像，而不缩放该图像。

DrawImage - StretchBlt StretchDIBits 在指定位置并且按原始大小绘制指定的 Image 对象

DrawImageUnscaled - BitBlt 在由坐标对指定的位置，使用图像的原始物理大小绘制指定的图像。