C# 实现MFC里的CRectTracker。

Fxxk_Csdn

于 2019-05-23 11:41:29 发布

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分类专栏： C# GDI 文章标签： C# GDI

本文链接：https://blog.youkuaiyun.com/qq_39930578/article/details/90477087

本文介绍了如何在C#中实现MFC的CRectTracker类，提供了具体的效果展示，并给出了调用代码。示例代码可在CodeProject和GitHub找到，供开发者参考学习。

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效果：

代码:

using System.Drawing;
using System.Windows.Forms;
namespace CirecleCCS
{
    class CcsGo
    {
        /// <summary>
        /// 圆的直径
        /// </summary>
        public int ResizePinSize = 6;

        //半径
        int HalfRPR
        {
            get { return ResizePinSize / 2; }
        }
        private static Pen SelectRectPen, ResizePinPen;
        private float[] SelectRectDashPattern;
        private static Rectangle SelectRect;
        private static Rectangle ResizePin1, ResizePin2, ResizePin3, ResizePin4, ResizePin5, ResizePin6, ResizePin7, ResizePin8;
        private static Rectangle rect;  
        private static int ActivationPinPosition;
        //selectrect的x,y,x1,y1
        private static int SelectX0, SelectY0, SelectX1, SelectY1;

        //8个角+点空白处+点中间
        private const int hitNothing = -1;
        private const int hitTopLeft = 0;
        private const int hitTopRight = 1;
        private const int hitBottomRight = 2;
        private const int hitBottomLeft = 3;
        private const int hitTop = 4;
        private const int hitRight = 5;
        private const int hitBottom = 6;
        private const int hitLeft = 7;
        private const int hitMiddle = 8;

        #region HideResizePin//隐藏ResizePin
        private void HideResizePin()
        {
            ResizePin1.Width = 0; ResizePin1.Height = 0;
            ResizePin2.Width = 0; ResizePin2.Height = 0;
            ResizePin3.Width = 0; ResizePin3.Height = 0;
            ResizePin4.Width = 0; ResizePin4.Height = 0;
            ResizePin5.Width = 0; ResizePin5.Height = 0;
            ResizePin6.Width = 0; ResizePin6.Height = 0;
            ResizePin7.Width = 0; ResizePin7.Height = 0;
            ResizePin8.Width = 0; ResizePin8.Height = 0;
        }
        #endregion

        #region SetResizePinVal 实时显示ResizePin
        void SetResizePinVal()
        {
            ResizePin1.X = X - HalfRPR;
            ResizePin1.Y = Y - HalfRPR;
            ResizePin2.X = X + Width / 2 - HalfRPR;
            ResizePin2.Y = Y - HalfRPR;
            ResizePin3.X = X + Width - HalfRPR;
            ResizePin3.Y = Y - HalfRPR;
            ResizePin4.X = X + Width - HalfRPR;
            ResizePin4.Y = Y + Height / 2 - HalfRPR;
            ResizePin5.X = X + Width - HalfRPR;
            ResizePin5.Y = Y + Height - HalfRPR;
            ResizePin6.X = X + Width / 2 - HalfRPR;
            ResizePin6.Y = Y + Height - HalfRPR;
            ResizePin7.X = X - HalfRPR;
            ResizePin7.Y = Y + Height - HalfRPR;
            ResizePin8.X = X - HalfRPR;
            ResizePin8.Y = Y + Height / 2 - HalfRPR;
        }
        #endregion

        #region ShowResizePin//显示ResizePin
        private void ShowResizePin()
        {
            ResizePin1.X = SelectRect.X - HalfRPR;
            ResizePin1.Y = SelectRect.Y - HalfRPR;
            ResizePin2.X = SelectRect.X + SelectRect.Width / 2 - HalfRPR;
            ResizePin2.Y = SelectRect.Y - HalfRPR;
            ResizePin3.X = SelectRect.X + SelectRect.Width - HalfRPR;
            ResizePin3.Y = SelectRect.Y - HalfRPR;
            ResizePin4.X = SelectRect.X + SelectRect.Width - HalfRPR;
            ResizePin4.Y = SelectRect.Y + SelectRect.Height / 2 - HalfRPR;
            ResizePin5.X = SelectRect.X + SelectRect.Width - HalfRPR;
            ResizePin5.Y = SelectRect.Y + SelectRect.Height - HalfRPR;
            ResizePin6.X = SelectRect.X + SelectRect.Width / 2 - HalfRPR;
            ResizePin6.Y = SelectRect.Y + SelectRect.Height - HalfRPR;
            ResizePin7.X = SelectRect.X - HalfRPR;
            ResizePin7.Y = SelectRect.Y + SelectRect.Height - HalfRPR;
            ResizePin8.X = SelectRect.X - HalfRPR;
            ResizePin8.Y = SelectRect.Y + SelectRect.Height / 2 - HalfRPR;
            ResizePin1.Width = ResizePinSize; ResizePin1.Height = ResizePinSize;
            ResizePin2.Width = ResizePinSize; ResizePin2.Height = ResizePinSize;
            ResizePin3.Width = Resiz