/// <summary>
/// 去頭去尾斷么九
/// </summary>
private void Trim()
{
if (Frames != null)
{
int first = 0, last = Frames.Count - 1;
for (int i = 0; i < Frames.Count; i++)
{
if (!IsNoPointable(Frames[i]))
{
first = i;
break;
}
}
for (int i = Frames.Count - 1; i >= 0; i--)
{
if (!IsNoPointable(Frames[i]))
{
last = i;
break;
}
}
Frames = Frames.GetRange(first, last - first + 1);
}
}
