barcode

问题 I try to create a PDF with a EAN13 Bar-code using the iTextSharp library. I try to generate a barcode with the value " 023942432852 ". iTextSharp.text.Image imageEAN = codeEan.CreateImageWithBarcode(cb, null, null); throws System.IndexOutOfRangeException . There is the code: Document pdfdoc = new Document(pageSize, _margSx, _margDx, _margUp, _margBo); PdfWriter writer = PdfWriter.GetInstance(pdfdoc, new FileStream(_path + @"\Barcode.pdf", FileMode.Create)); pdfdoc.Open(); PdfContentByte cb =

问题 i have to develop application that create a paint object. and user can add different items such as shape , image , date ... . one of that items is barcode such as this image : barcode is exist a library for generate unique barcode? and how to draw it in Qt? 回答1: There is a Qt library named "Prison" which can generate bar codes and QR codes https://quickgit.kde.org/?p=prison.git 来源： https://stackoverflow.com/questions/39498215/how-to-generate-barcode-in-qt

问题 How can I display different barcodes in multiple columns in a PDF page using itext library to generate pdfs in java? I have to display 12 barcodes in the same PDF page in three columns, each one contains 4 barcodes (in other words it is a 4 by 3 matrix). 回答1: I've made a Barcodes example that does exactly what you need. See the resulting pdf: barcodes_table.pdf There's nothing difficult about it. You just create a table with 4 column and you add 12 cell: PdfPTable table = new PdfPTable(4);

问题 I have created one barcode image and convert it in data stream and embed it inline and pass it through smtp mail. Now recipient can able to see that barcode in webmail, but cannot able to see it outlook it is coming as red cross (x). Any help is highly appreciated. private string MyMethod(string myInputStr) { var myBarcodeObj = new Barcode(); string myString = string.Format("{0}\t", myInputStr); byte[] myGeneratedCode = myBarcodeObj.GenerateCode(myString); string myBase64ImageString =

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . What is the formula for converting UPC-E barcodes to UPC-A barcodes? Better yet would be some C# code, C#esque pseudocode, or even just in an "English" expository way. 回答1: Ctrl+F for "Converting UPC-A to UPC-E" at http://www.taltech.com/barcodesoftware/symbologies/upc . It explains all the cases in a better

问题 Here's a link to the Koamtac iOS SDK that i'm trying to use: Koamtac iOS SDK. It includes a static library along with some sample code. Background I'm working on an iPhone application that requires a batch barcode import functionality, using KDC scanner device. The iPhone application is ARC based, and is built using Standard (armv7, armv7s) architecture. Problem I was able to run the KTDemo application (provided with the SDK). However, I'm having a difficult time setting-up the SDK in my own

问题 I have a multi-page document that is being scanned. Sometimes, either because the document was a fax or simply a bad scan, the barcode reading software cannot determine the value of the barcode. The barcode could be on any page within the document, however, this page should be the "header" page and moved to the front. How can I automatically detect that the image has a barcode when the value cannot be read with typical barcode reading tools? The usual barcode type is Code39, but sometimes it

问题 I have a requirement to clean a string for illegal barcode-39 data and change each illegal charcter to whitespace. Currently the only valid characters in barcode-39 are 0-9,A-Z,-(dash),.(dot),$(dollar-sign),/(forward-slash),+(plus-sign),%(percent-sign) and a space. I tried the following regular expression but it seems to only use the not operator in the first group of characters. barcode = barcode.toUpperCase().replaceAll("[^A-Z0-9\\s\\-\\.\\s\\$/\\+\\%]*"," "); The code seems to only

问题 I'm attempting to split a string I've read from a barcode into an array in Swift and I'm getting somewhat lost in the discussion of codepoints, unicode scalars and grapheme clusters... The barcode string contains "FNC1" delimiters which I believe has either an ASCII value of 232 or of 29 (I've found conflicting documentation), so the string is of this form: FNC1019931265099999891T77FNC1203000FNC19247 I'd expect the correct array split output to be: ["019931265099999891T77", "1203000", "19247"

问题 Matlab code for barcode detection using Hough tranform & edge detection techniques is required. I tried built in matlab functions for this but could not get the result because i know very little about Hough transform, edge detection or barcode detection So, any kind of help is much appreciated. So far i did this .. a=imread('BEAN13.jpg'); b = rgb2gray(a); rotI = imrotate(b,30,'crop'); %figure,imshow(rotI) BW = edge(rotI,'sobel'); [H,T,R] = hough(BW); imshow(H,[],'XData',T,'YData',R,...