public void Dispose()
{
if (disposed)
return;
disposed = true;
if (fmt_center != null)
{
fmt_center.Dispose();
fmt_center = null;
}
if (fmt_right != null)
{
fmt_right.Dispose();
fmt_right = null;
}
if (fmt_left != null)
{
fmt_left.Dispose();
fmt_left = null;
}
if (fmt_default != null)
{
fmt_default.Dispose();
fmt_default = null;
}
if (back_rect_brush != null)
{
back_rect_brush.Dispose();
back_rect_brush = null;
}
}