WinForm,窗体靠近屏幕边缘自动隐藏

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();
}