■ GridControl 클래스의 DoDragDrop 메소드를 사용해 내부에서 마우스 드래그 & 드롭을 처리하는 방법을 보여준다.
▶ 예제 코드 (C#)
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using System.Data; using System.Drawing; using System.ComponentModel; using System.Windows.Forms; using DevExpress.XtraGrid; using DevExpress.XtraGrid.Views.Grid; using DevExpress.XtraGrid.Views.Grid.ViewInfo; ... private GridControl gridControl; private GridView gridView; ... this.gridControl.MouseDown += new gridControl_MouseDown; this.gridControl.MouseMove += new gridControl_MouseMove; this.gridControl.DragOver += new gridControl_DragOver; this.gridControl.DragDrop += new gridControl_DragDrop; ... private GridHitInfo gridHitInfo = null; ... #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)); if(this.gridHitInfo.RowHandle < 0) { this.gridHitInfo = null; } } #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(!dragRectangle.Contains(new Point(e.X, e.Y))) { if(this.gridHitInfo.InRow) { this.gridControl.DoDragDrop(new object[] { this.gridHitInfo.RowHandle, gridControl }, DragDropEffects.All); } } } #endregion #region 그리드 컨트롤 드래그 OVER 처리하기 - gridControl_DragOver(sender, e) /// <summary> /// 그리드 컨트롤 드래그 OVER 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void gridControl_DragOver(object sender, DragEventArgs e) { GridHitInfo gridHitInfo = this.gridView.CalcHitInfo(this.gridControl.PointToClient(new Point(e.X, e.Y))); int sourceRowHandle = GetDragObject(sender, e.Data); if(gridHitInfo.InRow && sourceRowHandle >= 0 && sourceRowHandle != gridHitInfo.RowHandle) { if((e.KeyState & 8) != 0) { e.Effect = DragDropEffects.Copy; } else { e.Effect = DragDropEffects.Move; } } else { e.Effect = DragDropEffects.None; } } #endregion #region 그리드 컨트롤 드래그 DROP 처리하기 - gridControl_DragDrop(sender, e) /// <summary> /// 그리드 컨트롤 드래그 DROP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void gridControl_DragDrop(object sender, DragEventArgs e) { int sourceRowHandle = GetDragObject(sender, e.Data); if(sourceRowHandle < 0) { return; } GridHitInfo targetGridHitInfo = this.gridView.CalcHitInfo ( this.gridControl.PointToClient(new Point(e.X, e.Y)) ); if(targetGridHitInfo.InRow) { DataRowView sourceDataRowView = this.gridView.GetRow(sourceRowHandle) as DataRowView; int targetRowHandle = targetGridHitInfo.RowHandle; if(targetRowHandle < 0) { this.gridView.SetRowExpanded(targetRowHandle, true, true); targetRowHandle = this.gridView.GetDataRowHandleByGroupRowHandle(targetRowHandle); } DataRow targetDataRow = this.gridView.GetDataRow(targetRowHandle); DataRowView newDataRowView = null; if(e.Effect == DragDropEffects.Copy) { newDataRowView = ((DataView)this.gridView.DataSource).AddNew(); for(int i = 0; i < this.gridView.Columns.Count; i++) { newDataRowView.Row[this.gridView.Columns[i].FieldName] = sourceDataRowView[this.gridView.Columns[i].FieldName]; } sourceDataRowView = newDataRowView; } for(int i = 0; i < this.gridView.SortInfo.GroupCount; i++) { sourceDataRowView.Row[this.gridView.GroupedColumns[i].FieldName] = targetDataRow[this.gridView.GroupedColumns[i].FieldName]; } if(newDataRowView != null) { newDataRowView.Row["id"] = ((DataView)this.gridView.DataSource).Count; } sourceDataRowView.EndEdit(); } } #endregion #region 드래그 객체 구하기 - GetDragObject(sender, dataObject) /// <summary> /// 드래그 객체 구하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="dataObject">데이터 객체</param> /// <returns>드래그 객체</returns> private int GetDragObject(object sender, IDataObject dataObject) { object[] objectArray = dataObject.GetData(typeof(object[])) as object[]; if(objectArray == null || !sender.Equals(this.gridControl)) { return -2; } if(objectArray[0] is int) { return (int)objectArray[0]; } else { return -1; } } #endregion |