Created
May 19, 2016 18:33
-
-
Save Vaccano/89b7139186990b970e74c28083237918 to your computer and use it in GitHub Desktop.
RawPrint
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public class RawPrinterHelper | |
{ | |
// 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); | |
public static string queueName = "Label"; | |
// 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 = queueName; | |
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; | |
} | |
private static object iolock = new object(); | |
public static bool SendFileToPrinter(string szPrinterName, string szFileName) | |
{ | |
lock (iolock) | |
{ | |
// 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); | |
br.Close(); | |
fs.Close(); | |
return bSuccess; | |
} | |
} | |
public static bool SendStringToPrinter(string szPrinterName, string szString) | |
{ | |
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; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment