public new void mouseDown(NSEvent evt)
{
NSPoint originalPoint = convertPoint_fromView(evt.locationInWindow(), null);
if (m_selection.size != NSSize.Zero)
{
setNeedsDisplayInRect(m_selection);
m_selection = NSRect.Empty;
}
do
{
evt = window().nextEventMatchingMask(Enums.NSLeftMouseDraggedMask | Enums.NSLeftMouseUpMask);
autoscroll(evt);
NSPoint currentPoint = convertPoint_fromView(evt.locationInWindow(), null);
NSRect oldSelection = m_selection;
m_selection = DoCreateSelectionRect(originalPoint, currentPoint);
setNeedsDisplayInRect(m_selection.Union(oldSelection));
}
while (evt.type() == Enums.NSLeftMouseDragged);
DoInvariant();
}