Epson bitmap plugin unable to write to file programs

' that is 48 pixels high, then this while loop will execute twice, The offset variable keeps track of our global 'y' So, starting from x = 0, read 24 bits down and send that data ' '3' just means 'change line height command' ' height-how much the printer moves on a newline-is 30 dots. ' whitespace between slices of the image since the default line ' draw the bitmap in multiple passes, then we'll end up with some ' Set the line spacing to 24 dots, the height of each 'stripe' of the ' command to draw the next slice of 24 dots in the image. ' image is more than 24 dots high, we have to send a second bit image ' bytes, and send them to the printer, then keep increasing x. ' So, essentially, we need to read 24 bits for x = 0, generate those ' The printer wants to see these arranged in bytes stacked three high. ' as if we had scanned the bitmap from top to bottom, left to right. ' This is one long array of 1s (black) and 0s (white) pixels arranged Public Shared Function ConvertImagetoBytes(BM As Bitmap) As Byte()Дim Data As BitMapData = GetBitmapData(BM)Дim bw As New So we have our bitmap data sitting in a bit array called 'dots.' Marshal.Copy(managedData, 0, unmanagedData, managedData.Length)Д«Success = WritePrinter(hPrinter, unmanagedData, managedData.Length, dwWritten) UnmanagedData = Marshal.AllocCoTaskMem(managedData.Length) If OpenPrinter(PrinterName.Normalize(), hPrinter, 0) Then Public Shared Function PrintBytes(Document As Byte()) As BooleanДim hPrinter As IntPtr ' The printer handle.Дim dwError As Int32 ' Last error - in case there was trouble.Дim di As DOCINFOW ' Describes your document (name, port, data type).Дim dwWritten As Int32 ' The number of bytes written by WritePrinter().Дim bSuccess As Boolean ' Your success code. ' Send the unmanaged bytes to the printer. Marshal.Copy(b, 0, pUnmanagedBytes, b.Count) ' Copy the managed byte array into the unmanaged array. PUnmanagedBytes = Marshal.AllocCoTaskMem(b.Count) ' Allocate some unmanaged memory for those bytes. Public Shared Function PrintImage(BM As Bitmap) As BooleanДim b As Byte() = ConvertImagetoBytes(BM) Public Shared Function WritePrinter(ByVal hPrinter As IntPtr, ByVal pBytes As IntPtr, ByVal dwCount As Int32, ByRef dwWritten As Int32) As Boolean Public Shared Function EndPagePrinter(ByVal hPrinter As IntPtr) As Boolean Public Shared Function StartPagePrinter(ByVal hPrinter As IntPtr) As Boolean Public Shared Function EndDocPrinter(ByVal hPrinter As IntPtr) As Boolean Public Shared Function StartDocPrinter(ByVal hPrinter As IntPtr, ByVal level As Int32, ByRef pDI As DOCINFOW) As Boolean Public Shared Function ClosePrinter(ByVal hPrinter As IntPtr) As Boolean Public Shared Function OpenPrinter(ByVal src As String, ByRef hPrinter As IntPtr, ByVal pd As Long) As Boolean Private Shared PrintNam As String = 'POS' This is what makes the magic: Public Class EscPOS this article is really good if you want to print images Images.bot here are some articles that helped me with this: If you look for information you will notice how epson is not really happy sharing their knowleage. This is hard since it is not easy to find good articles.

Epson bitmap plugin unable to write to file programs