版本：V2.0 SP2
错误发生过程： 打开单据设计界面，将属性窗口托动到屏幕中间，点击对像选择框的下拉箭头没有反应或报以下错误。
发生时间： 2013年9月11日 22:58:10
错误来源： System.Windows.Forms
错误信息： Cannot access a disposed object.
Object name: 'KDTreeView'.
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调用堆栈：
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.ControlCollection.Add(Control value)
at System.Windows.Forms.Form.ControlCollection.Add(Control value)
at System.Windows.Forms.Control.set_ParentInternal(Control value)
at System.Windows.Forms.Control.set_Parent(Control value)
at Kingdee.BOS.WinForm.Ctrl.PropSheet.KDPropertyGrid.ShowDropDown()
at Kingdee.BOS.WinForm.Ctrl.PropSheet.KDPropertyGrid.lookUpEditObjectList_ButtonClick(Object sender, ButtonPressedEventArgs e)
at DevExpress.XtraEditors.Repository.RepositoryItemButtonEdit.RaiseButtonClick(ButtonPressedEventArgs e)
at DevExpress.XtraEditors.ButtonEdit.OnClickButton(EditorButtonObjectInfoArgs buttonInfo)
at DevExpress.XtraEditors.ButtonEdit.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at DevExpress.Utils.Controls.ControlBase.WndProc(Message& m)
at DevExpress.XtraEditors.TextEdit.WndProc(Message& msg)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
错误数据： System.Collections.ListDictionaryInternal
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