类似QQ窗体靠边隐藏原理

class Win32API { [DllImport("user32.dll")] public static extern bool PtInRect(ref Rectangle r, Point p); } private void timer3_Tick(object sender, EventArgs e) { System.Drawing.Point pp = new Point(Cursor.Position.X, Cursor.Position.Y);//获取鼠标在屏幕的坐标点 Rectangle Rects = new Rectangle(this.Left, this.Top, this.Left + this.Width, this.Top + this.Height);//存储当前窗体在屏幕的所在区域 Rectangle Rects2 = new Rectangle(this.Right, this.Top, this.Right + this.Width, this.Top + this.Height); if ((this.Top < 0) && Win32API.PtInRect(ref Rects, pp))//当鼠标在当前窗体内，并且窗体的Top属性小于0 this.Top = 0; //设置窗体的Top属性为0,就是将窗口上边沿紧靠顶部 else if (this.Top > -5 && this.Top < 5 && !(Win32API.PtInRect(ref Rects, pp)))//当窗体的上边框与屏幕的顶端的距离小于5时 this.Top = 5 - this.Height;//将QQ窗体隐藏到屏幕的顶端 else if ((this.Left < -150) && Win32API.PtInRect(ref Rects, pp))//当鼠标在当前窗体内，并且窗体的Left属性小于0 this.Left = 0; else if (this.Left > -5 && this.Left < 5 && !(Win32API.PtInRect(ref Rects, pp)))//将QQ窗体隐藏到屏幕的左端 this.Left = 5 - this.Width; else if (this.Bottom > Screen.AllScreens[0].Bounds.Height + this.Height - 30 && (Win32API.PtInRect(ref Rects, pp)))//当鼠标在当前窗体内，并且窗体底边到屏幕顶部的距离大于屏幕高度+窗体高度—30像素 this.Top = Screen.AllScreens[0].Bounds.Height - this.Height;//窗体紧贴屏幕下方 else if (this.Top == Screen.AllScreens[0].Bounds.Height - this.Height && !(Win32API.PtInRect(ref Rects, pp))) this.Top = Screen.AllScreens[0].Bounds.Height - 5; //窗体隐藏 else if (this.Right > Screen.AllScreens[0].Bounds.Width + 100 && (Win32API.PtInRect(ref Rects, pp))) this.Left = Screen.AllScreens[0].Bounds.Width - this.Width; else if (this.Left == Screen.AllScreens[0].Bounds.Width - this.Width && !(Win32API.PtInRect(ref Rects, pp))) this.Left = Screen.AllScreens[0].Bounds.Width - 5; }