nbsp; }             }             return false;         }                 private bool 二折连(int x1, int y1, int x2, int y2)         {             try            {                 if (右边(x1, y1, x2, y2) == true)                 {                     return true;                 }                 if (上边(x1, y1, x2, y2) == true)                 {                     return true;                 }                 if (左边(x1, y1, x2, y2) == true)                 {                     return true;                 }                 if (下边(x1, y1, x2, y2) == true)                 {                     return true;                 }             }             catch (Exception ex)             {                 MessageBox.Show(ex.Message, "趙趑龍提示:",                     MessageBoxButtons.OK, MessageBoxIcon.Information);           &nbs
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