代码如下：
namespace KM { public partial class Test : Form { public Test() { InitializeComponent(); } private void Test_Load(object sender, EventArgs e) { System.Windows.Forms.Timer StopRectTimer = new System.Windows.Forms.Timer(); StopRectTimer.Tick += new EventHandler(timer1_Tick); StopRectTimer.Interval =100; StopRectTimer.Enabled = true; this.TopMost = true; StopRectTimer.Start(); } private void timer1_Tick(object sender, EventArgs e) { if (this.Bounds.Contains(Cursor.Position)) { switch (this.StopAanhor) { case AnchorStyles.Top: this.Location = new Point(this.Location.X, 0); break; case AnchorStyles.Left: this.Location = new Point(0, this.Location.Y); break; case AnchorStyles.Right: this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, this.Location.Y); break; case AnchorStyles.Bottom: this.Location = new Point(this.Location.X, Screen.PrimaryScreen.Bounds.Height - this.Height); break; } } else { switch (this.StopAanhor) { case AnchorStyles.Top: this.Location = new Point(this.Location.X, (this.Height - 8) * (-1)); break; case AnchorStyles.Left: this.Location = new Point((-1) * (this.Width - 8), this.Location.Y); break; case AnchorStyles.Right: this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - 8, this.Location.Y); break; case AnchorStyles.Bottom: this.Location = new Point(this.Location.X, (Screen.PrimaryScreen.Bounds.Height - 8)); break; } } } internal AnchorStyles StopAanhor = AnchorStyles.None; private void mStopAnhor() { if (this.Top <= 0 && this.Left <= 0) { StopAanhor = AnchorStyles.None; } else if (this.Top <= 0) { StopAanhor = AnchorStyles.Top; } else if (this.Left <= 0) { StopAanhor = AnchorStyles.Left; } else if (this.Left >= Screen.PrimaryScreen.Bounds.Width - this.Width) { StopAanhor = AnchorStyles.Right; } else if (this.Top >= Screen.PrimaryScreen.Bounds.Height - this.Height) { StopAanhor = AnchorStyles.Bottom; } else { StopAanhor = AnchorStyles.None; } } private void Test_LocationChanged(object sender, EventArgs e) { this.mStopAnhor(); }
注：需要设计窗体控件的StopDock_LocationChanged事件。
