using DevExpress.XtraEditors; using DevExpress.XtraRichEdit.Model; using Gs.DevApp.ToolBox; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace Gs.DevApp.DevFrm { public partial class XtraForm1 : DevExpress.XtraEditors.XtraForm { private Gs.DevApp.ToolBox.DragResizeHelp _drapHelp; public XtraForm1() { InitializeComponent(); // this.xtraTabControl1.CustomHeaderButtonClick += new DevExpress.XtraTab.ViewInfo.CustomHeaderButtonEventHandler(this.xtraTabControl1_CustomHeaderButtonClick); _drapHelp = new DragResizeHelp(this, splitContainerControl1.Panel1, labelControl2); } private void xtraTabControl1_CustomHeaderButtonClick(object sender, DevExpress.XtraTab.ViewInfo.CustomHeaderButtonEventArgs e) { _drapHelp.Show(); } } }