void ISectionHost.DoDragDropOperation( Section sectionToDrag )
{
_draggingSections = sectionToDrag.GetExpandedDragList();
object[] data = sectionToDrag.GetDragObjects();
_imageWindowOffX = sectionToDrag.HostBasedRectangle.X - CursorClientPosition.X;
_imageWindowOffY = sectionToDrag.HostBasedRectangle.Y - CursorClientPosition.Y;
_imageWindow = CreateDragImageWindow( _draggingSections, data.Length != _draggingSections.Length );
if( DoDragDrop( data, DragDropEffects.Copy | DragDropEffects.Move ) == DragDropEffects.None )
{
Point cursorPos = PointToClient( Cursor.Position );
if( _lastDragAction == DragAction.Drop )
{
Rectangle rc = Rectangle.Empty;
foreach( Section s in _draggingSections )
{
if( rc == Rectangle.Empty )
{
rc = s.HostBasedRectangle;
}
else
{
rc = Rectangle.Union( rc, s.HostBasedRectangle );
}
}
foreach( Section s in _draggingSections )
{
if( s.CanDropInVoid && !rc.Contains( cursorPos ) )
{
s.DroppedInVoid();
}
}
}
}
FinishDropOperation();
}
private void FinishDropOperation()
{
if( _currentDropSection != null )
{
_currentDropSection.DragLeave();
_currentDropSection = null;
}
if( _sectionMouseButtonPressed != null )
{
_sectionMouseButtonPressed.MouseUp( new MouseEventArgs( MouseButtons.Left, 1, 0, 0, 0 ) );
_sectionMouseButtonPressed = null;
}
_draggingSections = null;
Cursor = Cursors.Arrow;
if( _imageWindow != null )
{
_imageWindow.Dispose();
_imageWindow = null;
}
_currentDropSection = null;
}
public void Dispose()
{
if( !_disposed )
{
if( --_referencesCount == 0 )
{
if( _upArrowWindow != null )
{
_upArrowWindow.Close();
_upArrowWindow = null;
}
if( _downArrowWindow != null )
{
_downArrowWindow.Close();
_downArrowWindow = null;
}
}
Debug.Assert( _referencesCount >= 0 );
_disposed = true;
}
}