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14.6.6 xDeviceBarcodeScanner Widget
Scan one or more barcodes using the camera on device.
Properties
ScanMultiple
A boolean value that indicates whether accept multiple barcode entries or just scan a single barcode.
AllowDuplicates
A boolean value that indicates if duplicate barcode entries are allowed. Only applicable if ScanMultiple is set to True.
ScannerEngine
A enum value that specifies the barcode processing engine. There are 3 valid options: Default, System (for iOS only), Google.
Methods
AddBarcodeType
Add a barcode scanner type.
- Input Arguments:
|
Name
Type
Mandatory
Description
Type
Enum
Yes
Supported barcode type of each scanner engine.
Default:
UPCA, CODE128, QRCODE, CODE39, ITF14, CODABAR, UPCE, CODE93
Google:
UPCA, CODE128, QRCODE, CODE39, ITF14, CODABAR, UPCE, CODE93, DATAMATRIX, PDF417, AZTEK
System:
UPCA, CODE128, QRCODE, CODE39, ITF14, UPCE, CODE93, DATAMATRIX, PDF417, AZTEK - Output Argument: None.
- Return Value: None.
RemoveBarcodeType
Remove a barcode scanner type.
- Input Arguments:
|
Name
Type
Mandatory
Description
Type
Enum
Yes
Valid values are: UPCA, CODE128, QRCODE, CODE39, ITF14, CODABAR, UPCE, CODE93, DATAMATRIX, PDF417, AZTEK
- Output Argument: None.
- Return Value: None.
ClearBarcodeTypes
Clear the current list of barcode scanner types.
- Input Arguments: None.
- Output Argument: None.
- Return Value: None.
ActivateScanner
Activate the scanner.
- Input Arguments: None.
- Output Argument: None.
- Return Value: Status Code
GetScannedValue
Get the scanned value. Call this method in Completed event to get scanned barcode value.
- Input Arguments:
|
Name
Type
Mandatory
Description
Index
Integer
Yes
Specify an index to locate a barcode value in scanned value list.
- Output Argument: None.
- Return Value: The scanned barcode value.
Events
Completed
Triggered when barcode scanning is finished.
- Parameters:
|
Name
Type
Description
Status
Enum
See Status Code
BarcodeCount
Integer
The number of barcodes that were scanned
Message
String
Code Examples
Define_Com Class(#xDeviceBarcodeScanner) Name(#BarcodeScanner) Evtroutine Handling(#COM_OWNER.Initialize) Clr_List Named(#BarcodeTypes) #STD_TEXTS := 'upca' Add_Entry To_List(#BarcodeTypes) #STD_TEXTS := 'code128' Add_Entry To_List(#BarcodeTypes) #STD_TEXTS := 'qrcode' Add_Entry To_List(#BarcodeTypes) #STD_TEXTS := 'code39' Add_Entry To_List(#BarcodeTypes) #STD_TEXTS := 'itf14' Add_Entry To_List(#BarcodeTypes) #Scanner.Enabled := false Endroutine Evtroutine Handling(#BarcodeScanner.Initialize) #Scanner.Enabled := true Endroutine Evtroutine Handling(#Scanner.Click) Define Field(#vrccItemCount) Type(*INT) Define Field(#vrccIx) Type(*INT) #BarcodeScanner.ScanMultiple := (#ScanMultiple.ButtonState = Checked) #BarcodeScanner.AllowDuplicates := (#AllowDuplicates.ButtonState = Checked) #BarcodeScanner.ClearBarcodeTypes() For Each(#item) In(#BarcodeTypes.Items) If (#item.Checked = Checked) Get_Entry Number(#item.Entry) From_List(#BarcodeTypes) #BarcodeScanner.AddBarcodeType( #STD_TEXTS ) Endif Endfor #BarcodeScanner.ActivateScanner() Endroutine Evtroutine Handling(#BarcodeScanner.Completed) Status(#lStatus) Barcodecount(#lCount) Message(#lMessage) Define Field(#vrbcIx) Type(*INT) If (#lStatus = OK) Begin_Loop Using(#vrbcIx) From(0) To(#lCount - 1) #STD_TEXTL := #BarcodeScanner.GetScannedValue( #vrbcIx ) Add_Entry To_List(#ScannedValues) End_Loop Endif Endroutine
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