/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnDragLeave(EventArgs e)
{
if ( this._selectedNode != null )
{
this.SelectedNode = this._selectedNode;
}
if ( this._previousNode != null )
{
this._previousNode.BackColor = this._dragOverNodeBackColor;
this._previousNode.ForeColor = this._dragOverNodeForeColor;
}
this._formDrag.Visible = false;
this.Cursor = Cursors.Default;
// Call cancel event
if ( this.DragCancel != null )
{
DragItemEventArgs ea = new DragItemEventArgs();
ea.Node = this._selectedNode;
this.DragCancel(this,ea);
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnKeyUp(KeyEventArgs e)
{
if ( e.KeyCode == Keys.Escape )
{
if ( this._selectedNode != null )
{
this.SelectedNode = this._selectedNode;
}
if ( this._previousNode != null )
{
this._previousNode.BackColor = SystemColors.HighlightText;
this._previousNode.ForeColor = SystemColors.ControlText;
}
this.Cursor = Cursors.Default;
this._formDrag.Visible = false;
// Call cancel event
if ( this.DragCancel != null )
{
DragItemEventArgs ea = new DragItemEventArgs();
ea.Node = this._selectedNode;
this.DragCancel(this,ea);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnItemDrag(ItemDragEventArgs e)
{
this._selectedNode = (TreeNode) e.Item;
// Call dragstart event
if ( this.DragStart != null )
{
DragItemEventArgs ea = new DragItemEventArgs();
ea.Node = this._selectedNode;
this.DragStart(this,ea);
}
// Somente dará start no drag drop se não for um nó raiz
if (this._selectedNode.PrevVisibleNode != null)
{
// Start drag drop. desde que seja de um nó selecionado na pasta FIELDS
if (this._selectedNode.Parent.Text == "Fields")
this.DoDragDrop(e.Item, this._dragMode);
}
}
