Usefull files for MCSD

Attaching localization

<h2><span data-win-res="{textContent: 'greeting'}"></span></h2>

and resource file with .resjson extension within strings folder:

eng
{
"greeting"          : "Hello",
"_greeting.comment" : "A welcome greeting"
}

dutch
{
"greeting"          : "Hallo",
"_greeting.comment" : "A welcome greeting"
}

Barcode reader

http://msdn.microsoft.com/en-US/library/windows/apps/windows.devices.pointofservice.barcodescanner

var barcodeScanner = Windows.Devices.PointOfService.BarcodeScanner;

/CheckHealthAsync - Tests the state of the barcode scanner./;
/ClaimScannerAsync - Attempts to get an exclusive access to the barcode scanner./;
/GetDefaultAsync - Returns the first available barcode scanner./;
/GetDeviceSelector - Returns an Advanced Query Syntax (AQS) string this is used to enumerate available barcode scanners./;

CameraCaptureUI

http://msdn.microsoft.com/en-us/library/windows/apps/windows.media.capture.cameracaptureui.photosettings.aspx

// Takes a photo with specified settings.
function takePhoto() {
    var captureUI = new Windows.Media.Capture.CameraCaptureUI();
    captureUI.photoSettings.allowCropping = true;
    captureUI.photoSettings.croppedAspectRatio.height = 3;
    captureUI.photoSettings.croppedAspectRatio.width = 4;
    captureUI.photoSettings.croppedSizeInPixels.height = 0;
    captureUI.photoSettings.croppedSizeInPixels.width = 0;
    captureUI.photoSettings.format = Windows.Media.Capture.CameraCaptureUIPhotoFormat.jpeg;
    captureUI.photoSettings.maxResolution = Windows.Media.Capture.CameraCaptureUIMaxPhotoResolution.highestAvailable;
    captureUI.captureFileAsync(Windows.Media.Capture.CameraCaptureUIMode.photo).then(function (capturedItem) {
        if (capturedItem) {
            document.getElementById("message").innerHTML = "User captured a photo."
        }
        else {
            document.getElementById("message").innerHTML = "User didn't capture a photo."
        }
    });
}

Magnetic stripe reader

https://code.msdn.microsoft.com/windowsapps/Magnetic-stripe-reader-30aa2ca5
http://msdn.microsoft.com/en-us/library/windows/apps/windows.devices.pointofservice.magneticstripereader.aspx

function startRead() {
    // Get the default magnetic stripe reader.
    Windows.Devices.PointOfService.MagneticStripeReader.getDefaultAsync().then(function (reader) {
        if (reader !== null) {
            _reader = reader;
            WinJS.log && WinJS.log("Default Magnetic Stripe Reader created.", "sample", "status");
            WinJS.log && WinJS.log("Device Id is:" + reader.deviceId, "sample", "status");

            // Claim the magnetic stripe reader for exclusive use.
            //=================================================
            // This function call way to review in future!!!
            //=================================================
            reader.claimReaderAsync().done(function (claimedReader) {
                _claimedReader = claimedReader;
                claimedReader.isDecodeDataEnabled = true;
                WinJS.log && WinJS.log("Claim Magnetic Stripe Reader succeeded.", "sample", "status");

                // Register event listeners
                claimedReader.addEventListener("bankcarddatareceived", onBankCardDataReceived);

                // Enable receiving data
                claimedReader.enableAsync().done(function () {
                    WinJS.log && WinJS.log("Enable Magnetic Stripe Reader succeeded.", "sample", "status");
                    WinJS.log && WinJS.log("Ready to swipe...", "sample", "status");
                    document.getElementById("startReadButton").disabled = true;
                    document.getElementById("endReadButton").disabled = false;
                }, function error(e) {
                    WinJS.log && WinJS.log("Error enabling reader..." + e.message, "sample", "status");
                });
            }, function error(e) {
                WinJS.log && WinJS.log("Could not claim reader..." + e.message, "sample", "status");
            });
        }
        else {
            WinJS.log && WinJS.log("Could not claim reader...", "sample", "status");
        }
           
    }, function error(e) {
        WinJS.log && WinJS.log("Magnetic Stripe Reader not found.  Please connect a Magnetic Stripe Reader.", "sample", "status");
    });
}

Printer options specified

function onPrintTaskRequested(printEvent) { 
    var printTask = printEvent.request.createPrintTask("Print Sample", function (args) { 
        args.setSource(MSApp.getHtmlPrintDocumentSource(document)); 

        // Choose the printer options to be shown. 
        // The order in which the options are appended determines the order in which they appear in the UI 
        printTask.options.displayedOptions.clear(); 
        printTask.options.displayedOptions.append(Windows.Graphics.Printing.StandardPrintTaskOptions.copies); 
        printTask.options.displayedOptions.append(Windows.Graphics.Printing.StandardPrintTaskOptions.mediaSize); 
        printTask.options.displayedOptions.append(Windows.Graphics.Printing.StandardPrintTaskOptions.orientation); 
        printTask.options.displayedOptions.append(Windows.Graphics.Printing.StandardPrintTaskOptions.duplex); 

        // Preset the default value of the printer option 
        printTask.options.mediaSize = Windows.Graphics.Printing.PrintMediaSize.northAmericaLegal; 

        // Register the handler for print task completion event 
        printTask.oncompleted = onPrintTaskCompleted; 
    }); 
} 

Proximity

http://msdn.microsoft.com/en-us/library/windows/apps/hh465229.aspx

Smart card certificate

http://msdn.microsoft.com/en-us/library/windows/apps/hh921583.aspx

To enable make changes in CAPABILITIES tab in app manifest:

 - Enterprise authentication (enterpriseAuthentication): Uses Windows credentials for access to a corporate intranet. This is typically used in line-of-business apps that connect to servers within an enterprise. You don't need this capability for generic communication across the internet.
 - Shared User Certificates (sharedUserCertificates): Enables an app to access software and hardware certificates, such as certificates stored on a smart card. This is typically used for financial or enterprise apps that require a smart card for authentication.
 - Documents library (documentsLibrary): Allows programmatic access to the user's Documents library, filtered to the file type associations declared in the package manifest. Apps can use the file picker to access a user's Documents library without declaring this capability.
 - Important  Apps using this capability can only be submitted from developer accounts which can demonstrate they have acquired an Extended Validation (EV) code signing certificate from a certificate authority (CA). See Account types, locations, and fees for more info.

Web Workers

https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/NsIWorkerScope#close()

var w = WebWorker('web.js');

to terminate a web worker following might be used:

- invoking w.terminate() from the main calling code
- calling close() from within the WebWorker, so it can be closed by itself.