■ TreeList 클래스의 DragEnter/DragDrop/DragOver 이벤트를 사용해 드래그 & 드롭을 사용하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.ComponentModel; using System.Drawing; using System.Windows.Forms; using DevExpress.Utils; using DevExpress.XtraEditors; using DevExpress.XtraGrid; using DevExpress.XtraGrid.Views.Grid.ViewInfo; using DevExpress.XtraTreeList; using DevExpress.XtraTreeList.Nodes; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : XtraForm { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 그리드 히트 정보 /// </summary> private GridHitInfo gridHitInfo = null; /// <summary> /// 그리드 데이터 소스 /// </summary> private BindingList<Person> gridDataSource = new BindingList<Person>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.gridDataSource.Add(new Person("John" , "Smith" , "USA" )); this.gridDataSource.Add(new Person("Michael", "Suyama" , "UK" )); this.gridDataSource.Add(new Person("Laura" , "Callahan", "UK" )); this.gridDataSource.Add(new Person("Gerard" , "Blain" , "France")); this.gridDataSource.Add(new Person("Sergio" , "Rubini" , "Italy" )); this.gridDataSource.Add(new Person("Andrew" , "Fuller" , "USA" )); this.gridControl.DataSource = this.gridDataSource; this.gridView.OptionsBehavior.EditorShowMode = EditorShowMode.Click; this.treeList.OptionsView.ShowIndentAsRowStyle = true; this.treeList.AllowDrop = true; this.treeList.KeyFieldName = "ID"; this.treeList.ParentFieldName = "ParentID"; this.treeList.DataSource = new BindingList<PersonExtended>(); this.gridControl.MouseDown += gridControl_MouseDown; this.gridControl.MouseMove += gridControl_MouseMove; this.treeList.DragEnter += treeList_DragEnter; this.treeList.DragDrop += treeList_DragDrop; this.treeList.DragOver += treeList_DragOver; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 그리드 컨트롤 마우스 DOWN 처리하기 - gridControl_MouseDown(sender, e) /// <summary> /// 그리드 컨트롤 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void gridControl_MouseDown(object sender, MouseEventArgs e) { this.gridHitInfo = this.gridView.CalcHitInfo(new Point(e.X, e.Y)); } #endregion #region 그리드 컨트롤 마우스 이동시 처리하기 - gridControl_MouseMove(sender, e) /// <summary> /// 그리드 컨트롤 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void gridControl_MouseMove(object sender, MouseEventArgs e) { if(this.gridHitInfo == null) { return; } if(e.Button != MouseButtons.Left) { return; } Rectangle dragRectangle = new Rectangle ( new Point ( this.gridHitInfo.HitPoint.X - SystemInformation.DragSize.Width / 2, this.gridHitInfo.HitPoint.Y - SystemInformation.DragSize.Height / 2 ), SystemInformation.DragSize ); if(!(this.gridHitInfo.RowHandle == GridControl.InvalidRowHandle) && !dragRectangle.Contains(new Point(e.X, e.Y))) { object data = this.gridView.GetRow(gridHitInfo.RowHandle); this.gridControl.DoDragDrop(data, DragDropEffects.Copy); } } #endregion #region 트리 리스트 드래그 ENTER 처리하기 - treeList_DragEnter(sender, e) /// <summary> /// 트리 리스트 드래그 ENTER 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void treeList_DragEnter(object sender, DragEventArgs e) { e.Effect = DragDropEffects.Copy; } #endregion #region 트리 리스트 드래그 OVER 처리하기 - treeList_DragOver(sender, e) /// <summary> /// 트리 리스트 드래그 OVER 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void treeList_DragOver(object sender, DragEventArgs e) { e.Effect = DragDropEffects.Copy; } #endregion #region 트리 리스트 드래그 DROP 처리하기 - treeList_DragDrop(sender, e) /// <summary> /// 트리 리스트 드래그 DROP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void treeList_DragDrop(object sender, DragEventArgs e) { TreeList treeList = sender as TreeList; DXDragEventArgs args = treeList.GetDXDragEventArgs(e); DragInsertPosition position = args.DragInsertPosition; Person persion = e.Data.GetData(typeof(TestProject.Person)) as Person; if(persion == null) { return; } int parentID = (int)treeList.RootValue; TreeListNode node = args.TargetNode; if(node == null) { treeList.AppendNode((new PersonExtended(persion, parentID)).ToArray(), null); } else { if(position == DragInsertPosition.AsChild) { parentID = Convert.ToInt32(node.GetValue("ID")); object[] persionValueArray = (new PersonExtended(persion, parentID)).ToArray(); treeList.AppendNode(persionValueArray, node); } if(position == DragInsertPosition.Before) { parentID = Convert.ToInt32(node.GetValue("ParentID")); object[] persionValueArray = (new PersonExtended(persion, parentID)).ToArray(); TreeListNode newNode = treeList.AppendNode(persionValueArray, node.ParentNode); int targetPosition; if(node.ParentNode == null) { targetPosition = treeList.Nodes.IndexOf(node); } else { targetPosition = node.ParentNode.Nodes.IndexOf(node); } treeList.SetNodeIndex(newNode, targetPosition); } node.Expanded = true; } } #endregion } } |
