3,2011.9.1,物料主界面

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物料主界面使用DEV 的Rinnbon control

使用MDI，main_form为父窗口

 //             // Main_Form            //             this.IsMdiContainer = true;            this.Name = "Main_Form";            this.ShowIcon = false;            this.Text = "SY_BOM/采购与仓储";            this.WindowState = System.Windows.Forms.FormWindowState.Maximized;            this.Load += new System.EventHandler(this.Main_Form_Load);            this.ResumeLayout(false);

设定只能打开一个子窗口，

在打开子窗口时判断有否有活动子窗口并试图关闭，

private void buyList_barButtonItem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)        {            //关闭所有子窗口            foreach  (Form  child_form   in this .MdiChildren )            {                child_form.Close();            }            //没有子窗口后，建新窗口            //同时只能有一个子窗口            if (this.ActiveMdiChild ==null )            {                BuyList_Form My_BuyList_Form = new BuyList_Form();                My_BuyList_Form.MdiParent = this;                My_BuyList_Form.Show();            }        }