在C#中使用PrintDocument发送剪切命令到热敏打印机,可以通过以下步骤实现:
using System.Drawing.Printing;
PrintDocument printDocument = new PrintDocument();
printDocument.PrinterSettings.PrinterName = "热敏打印机名称";
printDocument.PrintPage += new PrintPageEventHandler(PrintPageHandler);
private void PrintPageHandler(object sender, PrintPageEventArgs e)
{
// 设置打印内容
string content = "这是要打印的内容";
Font font = new Font("Arial", 12);
e.Graphics.DrawString(content, font, Brushes.Black, 0, 0);
// 发送剪切命令
string cutCommand = "\x1B\x69";
RawPrinterHelper.SendStringToPrinter(printDocument.PrinterSettings.PrinterName, cutCommand);
}
public class RawPrinterHelper
{
[DllImport("winspool.drv")]
public static extern bool OpenPrinter(string pPrinterName, out IntPtr phPrinter, IntPtr pDefault);
[DllImport("winspool.drv")]
public static extern bool ClosePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = false)]
public static extern bool SendStringToPrinter(IntPtr hPrinter, string data, int count, out int bytesWritten);
public static bool SendStringToPrinter(string printerName, string data)
{
IntPtr printerHandle;
int bytesWritten;
if (!OpenPrinter(printerName, out printerHandle, IntPtr.Zero))
{
return false;
}
if (!SendStringToPrinter(printerHandle, data, data.Length, out bytesWritten))
{
return false;
}
ClosePrinter(printerHandle);
return true;
}
}
printDocument.Print();
这样,当你运行程序时,它将发送剪切命令到热敏打印机,并打印指定的内容。
请注意,以上代码仅为示例,实际使用时需要根据具体的热敏打印机型号和驱动程序进行适配。另外,如果需要更复杂的打印格式或者控制命令,可以参考热敏打印机的开发文档或者相关资料进行扩展。
推荐的腾讯云相关产品:腾讯云云服务器(ECS),腾讯云云数据库MySQL版,腾讯云云原生容器服务(TKE)。
腾讯云产品介绍链接地址:
领取专属 10元无门槛券
手把手带您无忧上云