参考网上的代码，发现窗口容易闪烁而且最小化后无法恢复，为此添加了一个是否隐藏的一个标志位，并且捕获窗口大小变化，经过测试比较好的实现了边缘吸附功能
直接上代码：
internal AnchorStyles StopAanhor = AnchorStyles.None;
bool hideFlag = false;
//定时周期100ms
private void timer2_Tick(object sender, EventArgs e)
{
if (this.Bounds.Contains(Cursor.Position))
{
switch (this.StopAanhor)
{
case AnchorStyles.Top:
//窗体在最上方隐藏时，鼠标接触自动出现
if (hideFlag == false)
{
this.Location = new Point(this.Location.X, this.Location.Y);
}
else
{
this.Location = new Point(this.Location.X, 0);
}
break;
//窗体在最左方隐藏时，鼠标接触自动出现
case AnchorStyles.Left:
if (hideFlag == false)
{
this.Location = new Point(this.Location.X, this.Location.Y);
}
else
{
this.Location = new Point(0, this.Location.Y);
}
break;
//窗体在最右方隐藏时，鼠标接触自动出现
case AnchorStyles.Right:
if (hideFlag == false)
{
this.Location = new Point(this.Location.X, this.Location.Y);
}
else
{
this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, this.Location.Y);
}
break;
}
}
else
{
//窗体隐藏时在靠近边界的一侧边会出现2像素原因：感应鼠标，同时2像素不会影响用户视线
switch (this.StopAanhor)
{
//窗体在顶部时时，隐藏在顶部，底部边界出现2像素
case AnchorStyles.Top:
this.Location = new Point(this.Location.X, (this.Height - 2) * (-1));
StopAanhor = AnchorStyles.Top;
hideFlag = true;
break;
//窗体在最左边时时，隐藏在左边，右边边界出现2像素
case AnchorStyles.Left:
this.Location = new Point((-1) * (this.Width - 2), this.Location.Y);
StopAanhor = AnchorStyles.Left;
hideFlag = true;
break;
//窗体在最右边时时，隐藏在右边，左边边界出现2像素
case AnchorStyles.Right:
this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - 2, this.Location.Y);
StopAanhor = AnchorStyles.Right;
hideFlag = true;
break;
default:break;
}
}
}
/// <summary>
/// 固定了窗体位置的类型
/// </summary>
private void mStopAnhor()
{
if (Cursor.Position.Y <= 0)
{
StopAanhor = AnchorStyles.Top;
}
else if (Cursor.Position.X <= 0)
{
StopAanhor = AnchorStyles.Left;
}
else if (Cursor.Position.X >= Screen.PrimaryScreen.Bounds.Width - 2)//光标位置从0开始
{
StopAanhor = AnchorStyles.Right;
}
else
{
//StopAanhor = AnchorStyles.None; //这里防止点击任务栏窗口恢复不正常
}
//解决窗口乱跳问题
if (this.Bounds.Contains(Cursor.Position) && this.Location.X > 0 && this.Location.X < Screen.PrimaryScreen.Bounds.Width - this.Width - 0 && this.Location.Y > 0)
{
StopAanhor = AnchorStyles.None;
hideFlag = false;
}
else
{
hideFlag = false;
}
}
private void Form1_LocationChanged(object sender, EventArgs e)
{
this.mStopAnhor();
}
private void Form1_SizeChanged(object sender, EventArgs e)
{
if (this.WindowState == FormWindowState.Minimized)
{
this.timer2.Stop();//这里防止最小化后不显示
}
else if (this.WindowState == FormWindowState.Normal)
{
this.timer2.Start();//这里防止最小化后不显示
}
}
