Winform子窗体在移动时如何控制不能超出MDI窗体范围

Question

我想控制子窗体在移动时不能超出MDI窗体的边框，如何实现呀

Answer 1

是判断MDI的TOP和LEFT的值吗？有没有具体的代码

Answer 2

        private void form1_Move(object sender, EventArgs e)
        {
            try
            {
                Rectangle subRc = this.Bounds;
                Rectangle parRc = this.Parent.Bounds;                if(!parRc.Contains(subRc))       //这句是关键
                {
                    if (subRc.X < parRc.X)
                        this.Bounds.X = this.Parent.Bounds.X;                    if (subRc.Y < parRc.Y)
                        this.Bounds.Y = this.Parent.Bounds.Y;                    if (subRc.Right > parRc.Right)
                        this.Bounds.Right  = this.Parent.Bounds.Right ;                    if (subRc.Bottom > parRc.Bottom)
                        this.Bounds.Bottom = this.Parent.Bounds.Bottom;
                }
            }
            catch(Exception ex)
            {            }        }