frm.MdiParent = this; //frm.WindowState = FormWindowState.Maximized; frm.Dock = DockStyle.Fill; //设置为ChildForm和MainForm一起拉伸 frm.FormBorderStyle = FormBorderStyle.None; this.Client_Event += new Message_Event(frm.OnClientEvent); frm.m_Operator = m_Operator; return frm; 转载于:https://www.cnblogs.com/dannyr/archive/2007/07/27/833735.html