我开发了 windows mobile 6.1 应用程序,它可以搜索附近的蓝牙设备并发送文件。我还提供了打印功能以在蓝牙打印机上打印文档。
第一次打印功能工作得很好,但是当我再次打印文档时,我需要重新启动打印机,然后才能打印。
有什么办法可以避免重启打印机吗??
以下是我参考https://32feet.codeplex.com/discussions/355451的打印代码
private void btPrint_Click(object sender, EventArgs e)
{
// Activate BT
BluetoothRadio.PrimaryRadio.Mode = RadioMode.Connectable;
System.Threading.Thread.Sleep(1000);
// Connect
BluetoothAddress btAddress;
btAddress = BluetoothAddress.Parse("0022583165F7");
BluetoothClient btClient = new BluetoothClient();
try
{
btClient.Connect(new BluetoothEndPoint(btAddress, BluetoothService.SerialPort));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
// Send data
string CPCLStr1 =
"! 0 200 200 210 1" + Environment.NewLine +
"ML 25" + Environment.NewLine +
"TEXT 7 0 10 20" + Environment.NewLine +
"Just" + Environment.NewLine +
"Testing" + Environment.NewLine +
"ENDML" + Environment.NewLine +
"FORM" + Environment.NewLine +
"PRINT" + Environment.NewLine;
// Convert CPCL String to byte array
byte[] CPCLbytes1 = ASCIIEncoding.ASCII.GetBytes(CPCLStr1);
NetworkStream ns = btClient.GetStream();
ns.Write(CPCLbytes1, 0, CPCLbytes1.Length);
btClient.Close();
}