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Using a Webcam with WB24

Posted by mixgh 
Using a Webcam with WB24
October 28, 2019 12:32AM
I need to let my users take pictures and load into the database. Has anyone used the webcam control successfully?

If not, is there an alternative?

Thanks and regards

Re: Using a Webcam with WB24
November 10, 2019 10:38PM
Yes it can be done donot use that control , brows the web and add it yourself

There is a very cool way to add anything you need:

Creation ==>Webcomponent ==> Other

Then you can addsome javascript to get the cam and then it will display your cam . You then can save the picture.

This is awesome. I made a barcode scanner on a website this way. * without a native app


Renko Allard

Sorry Here code that will help you out:

html placeholder:
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>

var video = document.getelementbyID('video')
// Make sure you can connect to the camera
if (navigator.mediaDevices.getUserMedia)
{navigator.mediaDevices.getUserMedia({video:true }).then
video.srcObject = stream;

// Elements for taking the snapshot
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var video = document.getElementById('video');

// Trigger photo take
document.getElementById("snap").addEventListener("click", function() {
context.drawImage(video, 0, 0, 640, 480);

Edited 1 time(s). Last edit at 11/11/2019 08:32AM by Allard.
Re: Using a Webcam with WB24
November 12, 2019 08:46PM
Thanks so much Allard, I'll give it a try.

Re: Using a Webcam with WB24
January 30, 2020 08:08PM
Hi Renko,

I gave your code a try but it didn't work. Most probably because I don't know how to program javascript. I did however continue my search based on your JS idea and got the following code:

<!DOCTYPE html><html><head></head><body onload="init();"><h1>
Take a snapshot of the current video stream
Click on the Start WebCam button.<p>
<button onclick="startWebcam();">Start WebCam</button><button onclick="stopWebcam();">Stop WebCam</button>&nbsp;<button onclick="snapshot();">Take Snapshot</button>&nbsp;
<video onclick="snapshot(this);" width=400 height=400 id="video" controls autoplay></video><p>
Screenshots :&nbsp;<p>
<canvas id="myCanvas" width="400" height="350"></canvas>&nbsp;&nbsp;
navigator.getUserMedia = ( navigator.getUserMedia ||
navigator.webkitGetUserMedia ||
navigator.mozGetUserMedia ||
var video;
var webcamStream;
function startWebcam() {
if (navigator.getUserMedia) {
navigator.getUserMedia (
// constraints
video: true,
audio: false
// successCallback
function(localMediaStream) {
video = document.querySelector('video');
video.src = window.URL.createObjectURL(localMediaStream);
webcamStream = localMediaStream;
// errorCallback
function(err) {
console.log("The following error occured: " + err);
} else {
console.log("getUserMedia not supported");
function stopWebcam() {
var canvas, ctx;
function init() {
// Get the canvas and obtain a context for
// drawing in it
canvas = document.getElementById("myCanvas");
ctx = canvas.getContext('2d');
function snapshot() {
// Draws current image from the video element into the canvas
ctx.drawImage(video, 0,0, canvas.width, canvas.height);

It goes one step better but nothing comes up in the video to take a snapshot of within the browser but when I connect to the webcam from windows, it works. Could you try this at your end?

Also, how would I save the snapped picture.

Sorry if I'm asking too much.


Re: Using a Webcam with WB24
January 31, 2020 11:38AM
I haven't looked at it yet, but this MAY help you: [www.pcsoft.fr]

Steven Sitas
Re: Using a Webcam with WB24
February 18, 2020 09:01AM
Hi , I get a snapshot from the video with this code .

You have to use the webcomponents though

I am having trouble getting the canvas to save to an image. I would like to be able to take more then one picture and addd them to alooper.

The problem is saving the canvas to an image.

I saw a pcsoft video where they did just what we are talking about. I asked for an example of that but the y donnot react to my question.
It is the combining of javascript and w language that is a problem for me

Pitty for I almoast got what I need


Renko Allard
Re: Using a Webcam with WB24
February 28, 2020 11:46AM

It would be great if PCSoft would solve this problem once and for all with a system that works. Using a webcam with a browser based app is now standard fare.

We should not be hustling like this for basic features.

Re: Using a Webcam with WB24
February 28, 2020 11:47AM
Hi Allard,

Thanks for the effort.


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