怎么把一个字符串、字体大小、打印位置发送给打印端口机打印出来呢。

Question

同上。

Answer 1

PrintDocument pd = new PrintDocument(); 
pd.PrintPage += new PrintPageEventHandler( PrintInOut );
pd.Print();
然后在PrintInOut把所要打印的东西画出来后，通过PrintDocument打印出来

Answer 2

public class TestPrint
{
 private PrintDocument m_PrintDocument; 
 public SmartPrint()
  {
    m_PrintDocument = new PrintDocument();
   m_PrintDocument.PrintPage +=new PrintPageEventHandler(m_PrintDocument_PrintPage);
}        private void m_PrintDocument_PrintPage(object sender, PrintPageEventArgs ev)
        {
            IntPtr printerHDC = ev.Graphics.GetHdc();
            Graphics g = Graphics.FromHdc(printerHDC);
        g.DrawString("HelloWorld",new Font("Arial",10),Brushes.Red,new PointF(0,0));
            
        }
        public string Print()
        {
           try
            {
                if (m_PrintDocument.PrinterSettings.IsValid)
                {
                     
                    m_PrintDocument.Print();
                }
                return "Print completed.";
            }
            catch (Exception ex)
            {
                return ex.Message;
            } 
        }
    }