// SendBytesToPrinter()
// When the function is given a printer name and an unmanaged array
// of bytes, the function sends those bytes to the print queue.
// Returns true on success, false on failure.
/// <summary>
///
/// </summary>
/// <param name="docName"></param>
/// <param name="szPrinterName"></param>
/// <param name="pBytes"></param>
/// <param name="dwCount"></param>
/// <returns></returns>
private static bool sendBytesToPrinter(string docName, string szPrinterName, IntPtr pBytes, Int32 dwCount)
{
Int32 dwError = 0;
Int32 dwWritten = 0;
IntPtr hPrinter = new IntPtr(0);
DOCINFOA docInfo = new DOCINFOA();
bool bResult = false; // Assume failure unless you specifically succeed.
docInfo.pDocName = docName;
docInfo.pDataType = "RAW";
if (ZPLHelper.OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero))
{
if (ZPLHelper.StartDocPrinter(hPrinter, 1, docInfo))
{
if (ZPLHelper.StartPagePrinter(hPrinter))
{
bResult = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
ZPLHelper.EndPagePrinter(hPrinter);
}
ZPLHelper.EndDocPrinter(hPrinter);
}
ZPLHelper.ClosePrinter(hPrinter);
}
if (bResult == false)
{
dwError = Marshal.GetLastWin32Error(); // If you did not succeed, GetLastError may give more information about why not.
}
return(bResult);
}
/// <summary>
/// <para>打印含有中文的ZPL II条码</para>
/// <para>使用此方法可以无需放置字符集（GB2312, GB18080等）到打印机 或 指定字符集</para>
/// <para>ZPLII 指令事例</para>
/// ^XA
/// ^CW1,E:MSHEI.FNT -- 指定打印机的中文字体
/// ^CI28 --
/// ^LH0,0
/// ^FO20,20^A1N,25,25^FD大中華排名地下城(アテナ杯)開催決定！ ^FS^XZ"
/// </summary>
/// <param name="docName">打印文档名称</param>
/// <param name="printerName">指定打印机名称</param>
/// <param name="szString">ZPL II 指令</param>
/// <returns></returns>
public static bool SendChineseStringToPrinter(string docName, string printerName, string szString)
{
bool bSuccess = false;
byte[] byteArray = Encoding.UTF8.GetBytes(szString);
IntPtr pUnmanagedBytes = new IntPtr(0);
int nLength = byteArray.Length;
pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
Marshal.Copy(byteArray, 0, pUnmanagedBytes, nLength);
bSuccess = ZPLHelper.sendBytesToPrinter(docName, printerName, pUnmanagedBytes, nLength);
Marshal.FreeCoTaskMem(pUnmanagedBytes);
return(bSuccess);
}
/// <summary>
/// Send the converted ANSI string to the printer.
/// 打印中文需要指定字符集信息
/// </summary>
/// <param name="szPrinterName"></param>
/// <param name="szString"></param>
/// <returns></returns>
public static bool SendStringToPrinter(string docName, string szPrinterName, string szString)
{
IntPtr pBytes;
Int32 dwCount;
// How many characters are in the string?
dwCount = StringHelper.CountStringLength(szString);
// Assume that the printer is expecting ANSI text, and then convert
// the string to ANSI text.
pBytes = Marshal.StringToCoTaskMemAnsi(szString);
// Send the converted ANSI string to the printer.
ZPLHelper.sendBytesToPrinter(docName, szPrinterName, pBytes, dwCount);
Marshal.FreeCoTaskMem(pBytes);
return(true);
}
public static bool SendFileToPrinter(string docName, string szPrinterName, string szFileName)
{
FileStream fs = new FileStream(szFileName, FileMode.Open);
BinaryReader br = new BinaryReader(fs);
Byte[] bytes = new Byte[fs.Length];
bool bResult = false;
IntPtr pUnmanagedBytes = new IntPtr(0);
int nLength;
nLength = Convert.ToInt32(fs.Length);
bytes = br.ReadBytes(nLength);
pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
bResult = ZPLHelper.sendBytesToPrinter(docName, szPrinterName, pUnmanagedBytes, nLength);
Marshal.FreeCoTaskMem(pUnmanagedBytes); // Free the unmanaged memory that you allocated earlier.
return(bResult);
}
