[DllImport("User32.dll")] public static extern bool PtInRect(ref Rectangle Rects, Point lpPoint); private void timerShowHide_Tick(object sender, EventArgs e) { if (this.WindowState == FormWindowState.Normal) { System.Drawing.Point cursorPoint = 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 bool prInRect = PtInRect(ref Rects, cursorPoint); if (prInRect) {//当鼠标在当前窗体内 if (this.Top < 0)//窗体的Top属性小于0 this.Top = 0; else if (this.Left < 0)//窗体的Left属性小于0 this.Left = 0; else if (this.Right > Screen.PrimaryScreen.WorkingArea.Width)//窗体的Right属性大于屏幕宽度 this.Left = Screen.PrimaryScreen.WorkingArea.Width - this.Width; } else { if (this.Top < 5) //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; //将窗体隐藏到屏幕的顶端 else if (this.Left < 5) //当窗体的左边框与屏幕的左端的距离小于5时 this.Left = 5 - this.Width; //将窗体隐藏到屏幕的左端 else if (this.Right > Screen.PrimaryScreen.WorkingArea.Width - 5)//当窗体的右边框与屏幕的右端的距离小于5时 this.Left = Screen.PrimaryScreen.WorkingArea.Width - 5;//将窗体隐藏到屏幕的右端 } } }
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