private void SetCursor(MouseEventArgs e)
{
TreeColumn col;
col = GetColumnDividerAt(e.Location);
if (col == null)
_innerCursor = null;
else
{
if (col.Width == 0)
_innerCursor = ResourceHelper.DVSplitCursor;
else
_innerCursor = Cursors.VSplit;
}
col = GetColumnAt(e.Location);
if (col != _hotColumn)
{
_hotColumn = col;
UpdateHeaders();
}
}