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Add some comments for windows users. #204

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merged 2 commits into from
May 28, 2014
Merged

Add some comments for windows users. #204

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c9c3b58
Add some comments for windows users.
sdaclin Mar 4, 2014
64c45e1
Update README.md
sdaclin Mar 26, 2014
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4 changes: 4 additions & 0 deletions usb-label-printer/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,10 @@ var productId = 0x0021; // changed from 0x0020

(thanks @kjantzer for the [information](https://github.com/GoogleChrome/chrome-app-samples/issues/126#issuecomment-29547981))

### Windows issues

Some Windows device drivers take ownership of the device and don't allow Chrome to connect to them. If openDevice or findDevice doesn't work for you, you can try to use a generic low level driver instead.
For more info, check this [chrome-app-samples issue](https://github.com/GoogleChrome/chrome-app-samples/issues/203).

LICENSE
=======
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12 changes: 6 additions & 6 deletions usb-label-printer/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ function printCanvas() {

var info = {
"direction": "out",
"endpoint": 2, // 2 is the Bulk OUT Endpoint
"endpoint": 2, // 2 is the Bulk OUT Endpoint. You may use chrome.usb.listInterfaces to figure which address to use for Outputing data.
"data": data
};
chrome.usb.claimInterface(device, 0, function() {
Expand Down Expand Up @@ -298,7 +298,7 @@ function ditherImg(imgData) {
navigator.webkitGetUserMedia({audio: false, video: true}, function(videoStream) {
stream = videoStream;
video.src = webkitURL.createObjectURL(stream);
video.style.display = 'block';
video.style.display = 'block';
video.play();
}, function(e) {
console.error(e);
Expand All @@ -315,19 +315,19 @@ function ditherImg(imgData) {
tempCanvas.setAttribute('height', height);
}, false);


var takePicture = function() {
stream.stop();
video.style.display = 'none';
tempCanvas.width = width;
tempCanvas.height = height;
tempCanvas.getContext('2d').drawImage(video, 0, 0, width, height);
var data = tempCanvas.toDataURL('image/png');
logoImg.src=data;
};
logoImg.src=data;
};

video.addEventListener('click', takePicture);



var updateCanvasSize = function(e) {
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