在aboutbox窗体修改子窗体B的button控件的Visible属性
想要达到的效果
点击关于窗体（aboutbox窗体）的logoPictureBox控件

修改子窗体frmmodily的button的Visible属性为true

目的是隐藏这个功能，但通过一个方法可以激活这个功能。
注：frmmodily的父窗体为MDIParent1



[解决办法]
设置父窗体一个属性，然后在子窗体Load中访问该属性，通过属性值，来判断是否隐藏
[解决办法]

C# code

//frmmodily 窗体public partial class frmmodily : Form    {        //静态变量        static bool btvs;        //将aboutbox传的值赋给静态变量btvs        public bool Btvs        {            get { return btvs; }            set { btvs = value; }        }        //静态变量,只是为了标识是否触发了aboutbox的logoPictureBox_Click事件        static bool pcclick;        public bool Pcclick        {            get { return pcclick; }            set { pcclick = value; }        }        public frmmodily()        {            InitializeComponent();        }        private void frmmodily_MouseMove(object sender, MouseEventArgs e)        {            //触发，执行一次            if (pcclick == true)            {                //为按钮的Visible赋值                button1.Visible = btvs;                pcclick = false;            }        }        /// <summary>        /// 为了区分下button1.Visible值已经改变        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void frmmodily_Load(object sender, EventArgs e)        {            button1.Visible = false;        }    }//aboutbox 窗体public partial class aboutbox : Form    {        public aboutbox()        {            InitializeComponent();        }        /// <summary>        /// 弹出frmmodily窗体        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void button1_Click(object sender, EventArgs e)        {            frmmodily fd = new frmmodily();            fd.Show();        }        /// <summary>        /// 为frmmodily窗体上的公开变量Btvs赋值,同时修改触发属性        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void logoPictureBox_Click(object sender, EventArgs e)        {            frmmodily fd = new frmmodily();            fd.Btvs = true;            fd.Pcclick = true;        }    }