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MyBarLinkDragManager.cs
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MyBarLinkDragManager.cs
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using System.Windows.Forms;
using DevExpress.XtraBars;
using DevExpress.XtraBars.Controls;
using DevExpress.XtraBars.Utils;
using DevExpress.XtraBars.ViewInfo;
namespace BarsCustomization
{
public class MyBarLinkDragManager : BarLinkDragManager
{
private Bar currentBar = null;
public MyBarLinkDragManager(BarManager manager)
: base(manager)
{
}
protected virtual bool IsItemLinkIsFixed(BarItemLink link)
{
if ( currentBar == null )
return false;
bool fixedItem = false;
if ( link.Bar is MyBar )
fixedItem = ((MyBar)link.Bar).FixedItems.Contains(link.Item);
return fixedItem && link.Bar != currentBar;
}
public override bool CanAcceptDragObject(IDataObject data)
{
if ( currentBar == null )
return base.CanAcceptDragObject(data);
bool acceptDragObject = base.CanAcceptDragObject(data);
object obj = GetDraggingObject(data);
if ( obj is BarItemLink && IsItemLinkIsFixed((BarItemLink)obj) )
acceptDragObject = false;
return acceptDragObject;
}
public override void DoDragging(Control control, MouseEventArgs e)
{
base.DoDragging(control, e);
CustomBarControl barControl = control as CustomBarControl;
if ( barControl == null )
return;
currentBar = barControl.Bar;
if ( DragObject is BarItemLink && IsItemLinkIsFixed((BarItemLink)DragObject) )
{
Cursor.Current = (Cursor)Manager.GetController().DragCursors[2];
Manager.SelectionInfo.DropSelectStyle = LinkDropTargetEnum.None;
}
}
public new MyBarManager Manager
{
get
{
return base.Manager as MyBarManager;
}
}
}
}