public delegate void XMatchEventHandler(int x,bool flags);//定义委托
private int x;///窗体加载
private void Form1_Load(object sender, EventArgs e)
{ XObject.p = this.panel1; MatchListener ml = new MatchListener(); ml.XMatch += new MatchListener.XMatchEventHandler(ml_XMatch); ThreadStart ts = new ThreadStart(ml.StratListen); Thread t = new Thread(ts); t.IsBackground = true; t.Start(); }void ml_XMatch(int x,bool flags)
{ this.Invoke(new XMatchEventHandler(myMathch), new object[] { x,flags }); }void myMathch(int x,bool flags)
{ //Redr = flags; XObject.Redr = false; }
private int tempx;
private int tempy; private bool flag = false;private void panel1_MouseDown(object sender, MouseEventArgs e)
{ tempx = e.X; tempy = e.Y; flag = true; XObject.Redr = true; this.panel2.Paint += new PaintEventHandler(Form1_Paint); }private void panel1_MouseMove(object sender, MouseEventArgs e)
{ if (flag == true) { panel1.Location=(new Point(panel1.Location.X + e.X - tempx, panel1.Location.Y + e.Y - tempy)); } }private void panel1_MouseUp(object sender, MouseEventArgs e)
{ flag = false; XObject.Redr = false; panel2.Refresh(); }/// <summary>
/// 重绘控件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void Form1_Paint(object sender, PaintEventArgs e) { if (XObject.Redr) { //BurlyWood CadetBlue Coral CornflowerBlue Cornsilk Crimson DarkBlue DarkCyan DarkGray panel2.Refresh(); panel2.Update(); if (panel1.Location.X >= 3 || panel1.Location.X <= 3) { e.Graphics.DrawLine(new Pen(Color.DarkOrange, 2), new Point(panel1.Location.X, panel1.Parent.Location.Y), new Point(panel1.Location.X, panel1.Location.Y + Height)); } if (panel1.Location.Y >= 3 || panel1.Location.Y <= 3) { e.Graphics.DrawLine(new Pen(Color.Orange, 2), new Point(0, panel1.Location.Y), new Point(panel1.Parent.Width, panel1.Location.Y)); } XObject.Redr = false; } }
///静态类
public class XObject
{ public static System.Windows.Forms.Panel p;public static bool Redr = false;
}
///侦听
public class MatchListener
{ public delegate void XMatchEventHandler(int x,bool flag); public event XMatchEventHandler XMatch; public void OnXMatch(int x,bool flag) { if (XMatch != null) { XMatch(x,flag); } }
public MatchListener() { }
public int X = 100;
public int Y = 100;public void StratListen()
{ while (true) { if (Math.Abs(XObject.p.Left - X) < (XObject.p.Parent == null ? 200 : XObject.p.Parent.Width)) { //OnXMatch(X,true); XObject.Redr = true; } else { XObject.Redr = false; }System.Threading.Thread.Sleep(100);
} } }注意：重绘时重要的方法Invalidate() Refresh() Update()