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Print Zebra ZPL using PowerShell and C#
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| <# | |
| DISCLAIMER: Script is not optimized, just a quick example and reference | |
| RESOURCES: | |
| - Csharp script doing the heavy lifting is by barrypicker; https://stackoverflow.com/a/13201219 posted Nov 2, 2012 | |
| - Use `Get-Printer` to find your Zebra Printer Name | |
| - Use https://labelary.com/viewer.html for help with ZPL and preview | |
| - Official Zebra ZPLII programming guide https://www.zebra.com/content/dam/zebra_new_ia/en-us/manuals/printers/common/programming/zpl-zbi2-pm-en-pg.pdf | |
| #> | |
| $ZplRawPrinthelper = @" | |
| using System; | |
| using System.IO; | |
| using System.Runtime.InteropServices; | |
| 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); | |
| // 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 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; | |
| } | |
| } | |
| "@ | |
| # Add the C# class to the PowerShell session | |
| Add-Type -TypeDefinition $ZplRawPrinthelper | |
| # Define the printer name | |
| $printerName = "ZDesigner ZD421-203dpi ZPL" | |
| # ZPL Command as a multi-line string for readability, but can be a one-line string | |
| $zplString = @" | |
| ^XA | |
| ^CFP,40,40 | |
| ^FO225,15^^FDdiscord.gg/PDQ^FS | |
| ^FO225,55^^FDPLAVENGERS!!!^FS | |
| ^CFP,30,30 | |
| ^FO225,125^^FD... assemble?...^FS | |
| ^XZ | |
| "@ | |
| # Send the ZPL string to the printer | |
| [RawPrinterHelper]::SendStringToPrinter($printerName, $zplString) |
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