barcode-scanner

Texbox input, disable for keyboard, keep for barcode scanner

坚强是说给别人听的谎言 提交于 2019-12-04 05:41:47
问题 I have made a Windows Form application with a textbox. I will force users to use the barcode scanner, so the keyboard input should be disabled. The KeyPressed event does not work, because is also disabled input from the barcode scanner. I thought maybe I can set a timer on the TextChanged event, but I do not really know how it works. Have someone a good idea? 回答1: Based on your description, I assume that your barcode scanner is an HID barcode scanner. If so, there is no easy answer here

Prevent open downloads window in chrome with barcode reader

白昼怎懂夜的黑 提交于 2019-12-04 05:25:38
i have this problem with my website (MVC3, C#) and a barcode reader. In my form i have something like this: <ajax form....> <input type=text /> <div id=list> </div> </form> And the input is filled with a barcode reader and automatically submits the form that with ajax, fills the div with the id = list. My problem is that with chrome and ie, after the text is submited, a downloads windows appears in chrome and the favorites window appears in ie. I suppose that is because the barcode reader insers a [CR][LF] in the text and that opens those windows. I thought that the barcode reader was

USB interface barcode scanners

别来无恙 提交于 2019-12-04 04:41:27
Not exactly a programming question, but close. I'll try my luck anyway. The keyboard wedge barcode scanner inserts the translation device between the reader and the keyboard. Data sent through a wedge appears as if it was typed into the computer, while the keyboard itself remains fully functional . Because a computer using a keyboard wedge can't tell the difference between data that is entered by a scanning device, or data that is entered by keyboard typing, a wedge can be used to easily add barcode reading capability to an existing computer without modifying software applications . I'd like

iOS PhoneGap 1.7.0 + Barcode Scanning Plugin issue

跟風遠走 提交于 2019-12-04 03:14:05
Has anyone managed to get the BarcodeScanning plugin for PhoneGap to work on PhoneGap 1.7.0? Barcode Scanning plugin: https://github.com/phonegap/phonegap-plugins/tree/master/iOS/BarcodeScanner The issues is that the plugin is not getting set when its added.. I get the following when I call "alert(window.plugins.barcodeScanner);" "undefined" I am trying to isolate the point where the plugin is failing to get added and will update the question once I know more.. Thanks in advance for anyone who can help... Updated answer below: WTFJesus Excellent, The plugin now works again. One issue is the

iOS key code capture from external bluetooth scanner

白昼怎懂夜的黑 提交于 2019-12-03 22:47:10
I'm trying to scan a 2D barcode in iOS that contains non-printable characters. I have a multiple scanners that I would like to support. When connected via Serial Port Profile (SPP) using an SDK I can read all of that data just fine. One of the devices I would like to support only has Human Interface Device (HID) support (external keyboard). When I use the scanner in HID mode to populate a UITextField the unprintable characters are stripped out. I've connected the device to my laptop and used a key code capturing device to see that the data is actually being sent. Is there a way to populate a

Various barcode reader free SDK in iOS

自古美人都是妖i 提交于 2019-12-03 21:35:47
I am making a barcode reader app which is free. I am looking for free SDK to decode Datamatrix,QR,Aztec,UPC,EAN barcodes. I have implemented ZBar SDK as per now. Which detects QR,UPC and EAN successfully. I tested This link Zbar ZXingOBjC But none of these are able to detect Aztec properly. With Data Matrix,UPC,EAN and QR i found Redlaser very effective but now its not free. Now, is there any free SDK available to detect all four barcodes without paying as i want to keep my app free on app store. Please suggest P.S I want compatibility of scanner with latest iOS available. You scan customize

USB Barcode Scanner and WM_KEYDOWN

扶醉桌前 提交于 2019-12-03 20:29:11
I am trying to write a program that can will read a barcode scanner. In addition, I need it to read the input even when the application is not the window in focus (i.e., running in system tray, etc). I found this article, titled Distinguishing Barcode Scanners from the Keyboard in WinForms , that seems to solve the exact problem. It is working pretty good, it detects my device and handles the WM_INPUT message. However, it is checking to see if the RAWINPUT.keyboard.Message is WM_KEYDOWN (0x100). It never seems to receive this. The only line of code I've altered in the code provided in the

Getting Camera error in Zxing Barcode Application

不羁岁月 提交于 2019-12-03 19:46:06
问题 I am trying to use Zxing Library for developing a barcode scanner. My activity is as follows: public class Scanner extends Activity { private static final String PACKAGE = "com.test.scan"; private static final String SCANNER = "com.google.zxing.client.android.SCAN"; private static final String SCAN_FORMATS = "UPC_A,UPC_E,EAN_8,EAN_13,CODE_39,CODE_93,CODE_128"; private static final String SCAN_MODE = "QR_CODE_MODE"; public static final int REQUEST_CODE = 1; @Override public void onCreate

How to read barcodes with the camera on Android?

江枫思渺然 提交于 2019-12-03 17:54:03
问题 I want my application to recognize barcodes taken by camera. Is it possible using Android SDK? Something like this: Barcode Scanner 回答1: It's not built into the SDK, but you can use the Zxing library. It's free, open source, and Apache-licensed. The 2016 recommendation is to use the Barcode API, which also works offline. 回答2: 2016 update With the latest release of Google Play Services, v7.8, you have access to the new Mobile Vision API. That's probably the most convenient way to implement

image to barcode recognition [closed]

…衆ロ難τιáo~ 提交于 2019-12-03 16:50:36
Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I know this has been discussed a few times on stackoverflow but I wasn't able to find a sufficient answer. For a project, I am seeking the best possible piece of software/api/library that can recognise barcode numbers from the input image. It will be used on mobile phones(iphone, windows mobile, android etc.) so it should be good at catching barcodes from bad angles, blurry images and such bad