protected override void OnMouseDown(MouseEventArgs e)
{
if (!_isDraging)
{
foreach (TrackBarItem it in _items)
{
if (it.Contains(e.Location))
{
_currentTrackBarItem = it;
_currentTrackBarItem.Selected = true;
_isDraging = true;
_startPoint = e.Location;
Invalidate();
break;
}
}
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
if (_isDraging && _currentTrackBarItem != null)
{
int idx = _items.IndexOf(_currentTrackBarItem);
if (BarValueChangedFinished != null)
{
_isDraging = false;
BarValueChangedFinished(this, idx, GetValueAt(idx));
}
if (_currentTrackBarItem != null)
{
_currentTrackBarItem.Selected = false;
}
_currentTrackBarItem = null;
}
_isDraging = false;
_startPoint = Point.Empty;
Invalidate();
}