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ScanBarCodeFromBitmap

Overview

ScanBarCodeFromBitmap(hBitmap)

Scan the specified device dependent bitmap for bar code strings and return the number of bar codes found. The image must be single plane. Note that hBitmap is a HANDLE to a BITMAP, not the address of a BITMAP structure.

The managed component supports 2 forms of this function:

• ScanBarCodeFromBitmap(IntPtr hBitmap)
• ScanBarCodeFromBitmap(System.Drawing.Bitmap bitmap) (Managed Component Only)

Scan the specified managed bitmap object for bar code strings and return the number of bar codes found.

If the returned value is less than 0 then an error has occurred:

Visual Basic using the OCX

count = [form.]SoftekBarcode.ScanBarCodeFromBitmap(hBitmap)

Visual Basic using the DLL

Private Declare Function stScanBarCodeFromBitmap Lib "SoftekBarcode" (ByVal hBitmap As Long) As Integer
count = stScanBarCodeFromBitmap(hBitmap)

Visual Basic using COM

Not yet supported in this interface.

VB.Net using the DLL

Private Declare Function stScanBarCodeFromBitmap Lib "SoftekBarcode" (ByVal hBitmap As IntPtr) As Short
count = stScanBarCodeFromBitmap(hBitmap)

VB.Net using the SoftekBarcode Wrapper Class

Dim barcode As SoftekBarcode
..........
count = barcode.ScanBarCodeFromBitmap(hBitmap)

VB.Net using the SoftekBarcodeLib Managed Component

Dim barcode As SoftekBarcodeLib.BarcodeReader
....
nBarCode = barcode.ScanBarCodeFromBitmap(Me.PictureBox1.Image)

or

nBarCode = barcode.ScanBarCodeFromBitmap(hBitmap)

Visual C++ Using the OCX

short ScanBarCodeFromBitmap(long hBitmap)

Visual C++ Using the DLL

short __stdcall stScanBarCodeFromBitmap(long hBitmap);