TwainBarCodeGetCount Method (GdPictureImaging)

In This Topic

If barcode detection is enabled, returns the number of bar codes found on the last acquired image.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function TwainBarCodeGetCount() As Integer

public int TwainBarCodeGetCount()

public function TwainBarCodeGetCount(): Integer;

public function TwainBarCodeGetCount() : int;

public: int TwainBarCodeGetCount();

public:
int TwainBarCodeGetCount();

Return Value

The number of bar codes found on the document image. A value of 0 means the bar code engine was enabled but that no bar codes were found. A value of -1 means the bar code engine was not enabled.

Remarks

Before using this method make sure that the barcode detection was enabled by the TwainSetBarcodeDetection() method. Use the TwainBarCodeGetCount() method to determine how many barcodes have been detected on the last acquired image.

Reference

GdPictureImaging Class
GdPictureImaging Members
TwainIsBarcodeDetectionAvailable Method
TwainIsBarcodeDetectionEnabled Method
TwainSetBarcodeDetection Method