Developing Retail Applications Using POS for NET

8/18/2019 Developing Retail Applications Using POS for NET

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Introduction to Microsoft WindowsEmbedded for Point of Service (WEPOS) andMicrosoft Point of Service for .NET

Unified Point of Service (UPOS) and Point ofService (POS) for .NET

POS for .NET Applications


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Retail and POS markets widely use Microsoftoperating systems

WEPOS offers a standard platform for theretail industry, and much more

POS 1.11 SDK on Microsoft.com Downloads


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Unified Point Of Service is

Abstract hardware andsoftware

one application supportsmany POS devices of thesame type

No recompile of applicationsif hardware fails

Combines OPOS andJavaPOS specifications

POS Device

Application

UnifiedPOS Device

UnifiedPOSControlObject

UnfiedPOSServiceObject

UPOS


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POS for .NET is a .NET implementation ofUPOSPlug and Play is at the heart of POS for .NET

Legacy support for OPOS

POS for .NET SDKDevelop POS Applications and service objectsin .NET

Run time for Microsoft Windows XPProfessional, WEPOS, Windows Vista Business,and Windows Vista Ultimate, 32bit and 64bit

POS for .NET 1.11 supports UPOS v1.11


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POSDevice

Application

DeviceDriver

PosExplorer

ServiceObject

POS for .NET

OPOSDriver

ServiceObject

POSDevice

Application

ControlObject ActiveX

OPOS

InterOp


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Finally, there is a set sequence toenable/perform action/disable the device1. OPEN – Open access to the SO

2. CLAIM – Get exclusive access to the device3. DeviceEnable – Enable the device

4. Perform device action

5. DeviceDisable – Disable the device6. RELEASE – Release exclusive access to thedevice

7. CLOSE – Close access to the device


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Each device needs to be handled differentlyUSB Devices – Implement anDeviceAddedEvent and DeviceRemovedEvent

Printer and cash drawer sharing the same COMport – disable/enable to alternate between thetwo devices

Poll Display – Initialize on application startupand never shut down

Scanner – Re-enable device after a DataEvent


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One form in a multi-form application controlsthe POS devices

Keyboard wedges – Many Bar Code Scannersand MSR act as keyboard wedges

Devices can be added and removed withoutchanging the application

No Service Object available for keyboard wedges

Focus must be on the control (Text Box) toscanned or swipe in data

A POS for .NET’s key feature is data eventhandling


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Applications


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BumpBar

CashChanger

CashDrawer

Cat

CheckScanner

CoinDispenser

FiscalPrinter

HardTotals

Keylock

LineDisplay

Micr

MotionSensor

Msr

PinPad

PointCardRW

PosKeyboard

PosPower

PosPrinter

Scale

SignatureCapture

SmartCardRW

Bill Acceptor

RemoteOrderDisplay

Electronic Journal

ToneIndicator

Image Scanner

Biometrics

CoinAcceptor

Scanner

Bill Dispenser


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Typically written bydevice manufacturersand shipped with thedevice

May be installed by Inf or stand alone installer(drag-and-drop)

Derive from eitherInterface, Basic, orBase class

Scanner

ScannerDevice

ScannerServiceObject

DeviceDriver


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POS for .NET SDK comes with two serviceobjects with source code

Sample Service ObjectsUSB bar code, Scanners and MSRs

Microsoft.PointOfService.ExampleServiceObjects.dll –.

SimulatorsScanners, MSR, LineDisplays etc

Microsoft.PointOfService.DeviceSimulators.dll –


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Posdm.exe command-line tool

Exposes WMI via command line

Manual setup required to address Firewall

WMI Classes (root\MicrosoftPointOfService)ServiceObject – Information about installed SOs

POSDevice – Information about installed devices

LogicalDevice – Alias for POSDevice

DeviceProperty – name/value pair set on POSDevice

WMI Server Extensions for .NET applicationsMMC snap-in coming

All tools support remote management

Performance Monitor Counters


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POSDM.EXE

SOManager.exePerformanceMonitor(ensurePOSPerfCountersServiceStarted)


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Check for Application and Service Objectcompatibility

POS for .NET 1.11 loads .NET Framework 2.0

POS for .NET 1.1x and older loads .NETFramework 1.1

POS for .NET version in the registry:

HKLM/Software/POSfor.NET/Setup/ProductVersion


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CheckforCompatibility

POS for .NET Application Service Object Compatible

POS for .NET 1.11

(synchronized with

UPOS v1.11

UPOS v1.11 UPOS v1.11 Yes

UPOS v1.11 UPOS v1.8 or v1.9 No

UPOS v1.8 or v1.9 UPOS 1.11 Workaround

required

POS for .NET 1.1

(synchronized with

UPOS v1.9)





POS for .NET 1.0

(synchronized with

UPOS v1.8)


UPOS v1.8 UPOS v1.9 No



Check the versions of SO and applications


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Solutions for older POS for .NET applictions:1. Uninstall the .NET Framework 1.1 from the machine.

1. An application built against .NET Framework 1.1 will load the .NETFramework 2.0 if the .NET Framework 1.1 is not installed.

2. Add a Config file that instructs the application to load the

.NET Framework 2.0 instead of the .NET Framework 1.1Foo.exe – config file will be Foo.exe.config

Foo.exe.config must be in the same directory as Foo.exe

Foo.exe.config file would look like the following:

3. Recompile the application against the .NET Framework 2.0


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POS for .NET is .NET implementation of UPOS

Write applications in Visual C# or Visual Basic .NET

Architect the application to handle multiple devices

Service Objects and managing Service Objects

are at the center of POS for .NET


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Visit the Windows Embedded for Point of Service Web page

http://www.microsoft.com/windows/embedded/wepos

Evaluate Windows Embedded for Point of Service 120-daytrial version

http:// www.windowsembeddedkit.com/

Visit WEPOS support page at XPe Center @ seanliming.comhttp:// www.seanliming.com

Sign up for the Embedded DevWirehttp://msdn.microsoft.com/embedded/community/community/devwire/default.aspx

Engage with Windows Embedded Partnershttp://www.mswep.com

http://www.microsoft.com/windows/embedded/weposhttp://www.microsoft.com/windows/embedded/weposhttp://www.windowsembeddedkit.com/http://www.microsoft.com/windows/embedded/weposhttp://www.seanliming.com/http://msdn.microsoft.com/embedded/community/community/devwire/default.aspxhttp://www.mswep.com/http://www.mswep.com/http://msdn.microsoft.com/embedded/community/community/devwire/default.aspxhttp://www.seanliming.com/http://www.microsoft.com/windows/embedded/weposhttp://www.windowsembeddedkit.com/http://www.windowsembeddedkit.com/http://www.microsoft.com/windows/embedded/weposhttp://www.microsoft.com/windows/embedded/wepos


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Developing Retail Applications Using POS for NET

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