VC++画圆形可以使用API函数：Ellipse（int x1, int y1, int x2, int y2）；其画圆的原理是矩形的内切圆，四个参数中的前两个是矩形左上角坐标，后两个是矩形右下角坐标。VC++画图形前得先有一块画布DC即设备上下文。下面个例子：void CrrDlg::PaintCircle() //画实心圆函数{ CDC ...
函数功能：该函数用于画一个椭圆，椭圆的中心是限定矩形的中心，使用当前画笔画椭圆，用当前的画刷填充椭圆。函数原型：BOOL Ellipse(HDC hdc, int nLeftRect, int nTopRect, nRightRect, int nBottomRect)；参数：hdc：设备环境句柄。nLeftRect：指定限定矩形左上角的X坐标。nTopRect：指定限定矩形左...
int nEllipse = nUnits/3 // calculate how many todrawint nIndex// current ellipse that is being drawCBrush brush// bursh used for ellipse fill colorCBrush *pBrushOld // previousbrush that was selected into dc//draw ellipse , gradually moving towards upper-rightcornerfor (nIndex = 0 nIn...
直接上代码,具体注释看代码即可。 #include<iostream> #include<opencv2/opencv.hpp> using namespace std; using namespace cv; void drawLine(Mat ); void drawRectangle(Mat& image); void drawEllipse(Mat& image); void drawCricle(Mat& zy010101...
dc.Ellipse(CRect(m_startPoint,point)); m_OldPoint=point; break; case 5: //Dot break; } void CGISView::OnLButtonUp(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default m_startRect=FALSE;//重置绘制矩形框标志 ...
int nEllipse = nUnits/3 // calculate how many todrawint nIndex// current ellipse that is being drawCBrush brush// bursh used for ellipse fill colorCBrush *pBrushOld // previousbrush that was selected into dc//draw ellipse , gradually moving towards upper-rightcornerfor (nIndex = 0 nIn...
圆弧不要用Ellipse画，用Arc函数画 pDC->Arc(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4);由(x1, y1, x2, y2)确定椭圆外接矩形，(x3, y3, x4, y4)确定圆弧起点与终点(不一定在所要圆弧上，但必须使其与圆心的连线与前确定的椭圆有交点)不...
1.2 基于菜单栏的程序设计基于菜单栏的程序设计1 Menuitem程序为一个单文档的应用程序,程序启动后,单击“graph”菜单中的“rectangle”,则在当前的客户区中显示一个矩形;单击“graph”菜单中的“Ellipse”,则在当前的客户区中显示一个椭圆。 (1)利用AppW 5、izard,生成一个MFC的单文档工程“Menuitem”。(2)...
一. 首先建立一个单文档程序,名字为:DrawEllipse 二. 然后在CDrawEllipseView 类中添加成员变量: AI检测代码解析 public: Rect rect; BOOL m_flag; 1. 2. 3. 三. 在CDrawEllipseView 类构造器中添加初始化代码: AI检测代码解析 CDrawEllipseView::CDrawEllipseView() ...
int nEllipse = nUnits/3 // calculate how many to draw int nIndex // current ellipse that is being draw CBrush brush // bursh used for ellipse fill color CBrush *pBrushOld // previous brush that was selected into dc //draw ellipse , gradually moving towards upper-right ...