unity调用打印机打印

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/// <summary>     /// 打印     /// </summary>     public void PrintFile()     {         PrintDocument pri = new PrintDocument();         pri.PrintPage += Printpagetest;         pri.Print();     }       private void Printpagetest(object sender, PrintPageEventArgs e)     {         try         {             System.Drawing.Image image = System.Drawing.Image.FromFile(printPath);             System.Drawing.Graphics g = e.Graphics;             g.TranslateTransform(_4AHeight, 0);             g.RotateTransform(90);             g.DrawImage(image, 0, 0, _4AWidth, _4AHeight);         }         catch (Exception ee)         {             Debug.LogError(ee.Message);         }     }