General Methods

Method	Description
`GetErrorString`	Get error message by error code.
`GetVersion`	Get version information of SDK.
`TransformCoordinates`	Transform the coordinates of a point based on the given transformation matrix.
`FreeString`	Free memory allocated for string.

GetErrorString

Get error message by error code.

static const char* dynamsoft::dbr::CBarcodeReader::GetErrorString (const int iErrorCode)

Parameters
[in] iErrorCode Error code.

Return Value
The error message.

Code Snippet

char errorBuf[512];
dynamsoft::dbr::CBarcodeReader::InitLicense("YOUR-LICENSE-KEY", errorBuf, 512);
CBarcodeReader* reader = CBarcodeReader::GetInstance();
if(reader != NULL)
{
    int errorCode = reader->DecodeFile("C:\\Program Files (x86)\\Dynamsoft\\{Version number}\\Images\\AllSupportedBarcodeTypes.tif", "");
    const char* errorString = dynamsoft::dbr::CBarcodeReader::GetErrorString(errorCode);
    // add further process
    reader->Recycle();
}

GetVersion

Get version information of SDK.

static const char* dynamsoft::dbr::CBarcodeReader::GetVersion ()

Return Value
The version information string.

Code Snippet

const char* versionInfo = dynamsoft::dbr::CBarcodeReader::GetVersion();

TransformCoordinates

Transform the coordinates of a point based on the given transformation matrix.

static DBRPoint dynamsoft::dbr::CBarcodeReader::TransformCoordinates(DBRPoint originalPoint, double transformationMatrix[9])

Parameters

[in] originalPoint : The original point that needs to be transformed.
[in] transformationMatrix : The 3x3 matrix used for coordinate transformation.

Return Value

The point after transformation.

Code Snippet

//get originalPoint and transformationMatrix from LocalizationResult
DBRPoint targetPoint = CBarcodeReader::TransformCoordinates(originalPoint, transformationMatrix);

FreeString

Free memory allocated for string.

static void dynamsoft::dbr::CBarcodeReader::FreeString(char** content)

Parameters

[in] content The string needs to be freed.