// Structure and API declarions:
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public class DOCINFOA
{
[MarshalAs(UnmanagedType.LPStr)]
public string pDocName;
[MarshalAs(UnmanagedType.LPStr)]
public string pOutputFile;
[MarshalAs(UnmanagedType.LPStr)]
public string pDataType;
}
[DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);
[DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool ClosePrinter(IntPtr hPrinter);
[DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);
[DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool EndDocPrinter(IntPtr hPrinter);
[DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool StartPagePrinter(IntPtr hPrinter);
[DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool EndPagePrinter(IntPtr hPrinter);
[DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);
// 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.
public static bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount)
{
Int32 dwError = 0, dwWritten = 0;
IntPtr hPrinter = new IntPtr(0);
DOCINFOA di = new DOCINFOA();
bool bSuccess = false; // Assume failure unless you specifically succeed.
di.pDocName = "My C#.NET RAW Document";
di.pDataType = "RAW";
// Open the printer.
if (OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero))
{
// Start a document.
if (StartDocPrinter(hPrinter, 1, di))
{
// Start a page.
if (StartPagePrinter(hPrinter))
{
// Write your bytes.
bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
EndPagePrinter(hPrinter);
}
EndDocPrinter(hPrinter);
}
ClosePrinter(hPrinter);
}
// If you did not succeed, GetLastError may give more information
// about why not.
if (bSuccess == false)
{
dwError = Marshal.GetLastWin32Error();
}
return bSuccess;
}
public static bool SendFileToPrinter(string szPrinterName, string szFileName)
{
// Open the file.
FileStream fs = new FileStream(szFileName, FileMode.Open);
// Create a BinaryReader on the file.
BinaryReader br = new BinaryReader(fs);
// Dim an array of bytes big enough to hold the file's contents.
Byte[] bytes = new Byte[fs.Length];
bool bSuccess = false;
// Your unmanaged pointer.
IntPtr pUnmanagedBytes = new IntPtr(0);
int nLength;
nLength = Convert.ToInt32(fs.Length);
// Read the contents of the file into the array.
bytes = br.ReadBytes(nLength);
// Allocate some unmanaged memory for those bytes.
pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
// Copy the managed byte array into the unmanaged array.
Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
// Send the unmanaged bytes to the printer.
bSuccess = SendBytesToPrinter(szPrinterName, pUnmanagedBytes, nLength);
// Free the unmanaged memory that you allocated earlier.
Marshal.FreeCoTaskMem(pUnmanagedBytes);
return bSuccess;
}
public static bool SendStringToPrinter(string szString)
{
PrintDocument pdc = new PrintDocument();
string szPrinterName = pdc.PrinterSettings.PrinterName;
IntPtr pBytes;
Int32 dwCount;
// How many characters are in the string?
dwCount = szString.Length;
// 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.
SendBytesToPrinter(szPrinterName, pBytes, dwCount);
Marshal.FreeCoTaskMem(pBytes);
return true;
}
哪位大神帮忙看看,怎么才能打印中文。
8 个解决方案
#1
dwCount = szString.Length;
改成asciiing.defuatl.getBytes(szString).length
new FileStream(szFileName, FileMode.Open); 传的用文件用ANSI编码,试试
改成asciiing.defuatl.getBytes(szString).length
new FileStream(szFileName, FileMode.Open); 传的用文件用ANSI编码,试试
#2
还是不行
#3
SendStringToPrinter, 不知楼主是不是处在石器时代,除非楼主的打印机是文本打印机,并带所谓中文字库的那种!
发送字节过去的时候,估计得用GB2312编码吧:
byte[] bs = Encoding.GetEncoding("GB2312").GetBytes("string");
发送字节过去的时候,估计得用GB2312编码吧:
byte[] bs = Encoding.GetEncoding("GB2312").GetBytes("string");
#4
你这个是RawPringterHelper?
我用过,好像就是不能打印中文.
后来我用的是LTPControls
里面调用的kernel32.dll
是通过LPT端口访问打印机的.
我用过,好像就是不能打印中文.
后来我用的是LTPControls
里面调用的kernel32.dll
是通过LPT端口访问打印机的.
#5
我使用的是USB端口 无法用LPT端口访问
#6
没有特殊要求的话,也可以用vs自带的document.printer
不过在Epson LQ-380K上使用的时候会出现字高小于30就不打印,大于30小于50就只能打出来一半
在Epson LQ-680K上没有问题.
激光打印机也都没有问题.
不过在Epson LQ-380K上使用的时候会出现字高小于30就不打印,大于30小于50就只能打出来一半
在Epson LQ-680K上没有问题.
激光打印机也都没有问题.
#7
这个是调用的GDI+画个图片,打印的其实是图片,所以也不存在中文英文的问题
而且可以预览.
#8
/// <summary>
/// 打印标签带有中文字符的ZPL指令
/// </summary>
/// <param name="printerName"></param>
/// <param name="szString"></param>
/// <returns></returns>
public static bool SendStringToPrinter(string printerName,string szString)
{
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(szString); //转换格式注意编码名称,有时候是"utf-8"才能打印中文
IntPtr ptr = Marshal.AllocHGlobal(bytes.Length + 2);
try
{
Marshal.Copy(bytes, 0, ptr, bytes.Length);
SendBytesToPrinter(printerName, ptr, bytes.Length);
}
catch
{
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return true;
}
/// 打印标签带有中文字符的ZPL指令
/// </summary>
/// <param name="printerName"></param>
/// <param name="szString"></param>
/// <returns></returns>
public static bool SendStringToPrinter(string printerName,string szString)
{
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(szString); //转换格式注意编码名称,有时候是"utf-8"才能打印中文
IntPtr ptr = Marshal.AllocHGlobal(bytes.Length + 2);
try
{
Marshal.Copy(bytes, 0, ptr, bytes.Length);
SendBytesToPrinter(printerName, ptr, bytes.Length);
}
catch
{
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return true;
}
#1
dwCount = szString.Length;
改成asciiing.defuatl.getBytes(szString).length
new FileStream(szFileName, FileMode.Open); 传的用文件用ANSI编码,试试
改成asciiing.defuatl.getBytes(szString).length
new FileStream(szFileName, FileMode.Open); 传的用文件用ANSI编码,试试
#2
还是不行
#3
SendStringToPrinter, 不知楼主是不是处在石器时代,除非楼主的打印机是文本打印机,并带所谓中文字库的那种!
发送字节过去的时候,估计得用GB2312编码吧:
byte[] bs = Encoding.GetEncoding("GB2312").GetBytes("string");
发送字节过去的时候,估计得用GB2312编码吧:
byte[] bs = Encoding.GetEncoding("GB2312").GetBytes("string");
#4
你这个是RawPringterHelper?
我用过,好像就是不能打印中文.
后来我用的是LTPControls
里面调用的kernel32.dll
是通过LPT端口访问打印机的.
我用过,好像就是不能打印中文.
后来我用的是LTPControls
里面调用的kernel32.dll
是通过LPT端口访问打印机的.
#5
我使用的是USB端口 无法用LPT端口访问
#6
没有特殊要求的话,也可以用vs自带的document.printer
不过在Epson LQ-380K上使用的时候会出现字高小于30就不打印,大于30小于50就只能打出来一半
在Epson LQ-680K上没有问题.
激光打印机也都没有问题.
不过在Epson LQ-380K上使用的时候会出现字高小于30就不打印,大于30小于50就只能打出来一半
在Epson LQ-680K上没有问题.
激光打印机也都没有问题.
#7
这个是调用的GDI+画个图片,打印的其实是图片,所以也不存在中文英文的问题
而且可以预览.
#8
/// <summary>
/// 打印标签带有中文字符的ZPL指令
/// </summary>
/// <param name="printerName"></param>
/// <param name="szString"></param>
/// <returns></returns>
public static bool SendStringToPrinter(string printerName,string szString)
{
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(szString); //转换格式注意编码名称,有时候是"utf-8"才能打印中文
IntPtr ptr = Marshal.AllocHGlobal(bytes.Length + 2);
try
{
Marshal.Copy(bytes, 0, ptr, bytes.Length);
SendBytesToPrinter(printerName, ptr, bytes.Length);
}
catch
{
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return true;
}
/// 打印标签带有中文字符的ZPL指令
/// </summary>
/// <param name="printerName"></param>
/// <param name="szString"></param>
/// <returns></returns>
public static bool SendStringToPrinter(string printerName,string szString)
{
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(szString); //转换格式注意编码名称,有时候是"utf-8"才能打印中文
IntPtr ptr = Marshal.AllocHGlobal(bytes.Length + 2);
try
{
Marshal.Copy(bytes, 0, ptr, bytes.Length);
SendBytesToPrinter(printerName, ptr, bytes.Length);
}
catch
{
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return true;
}