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Initialize and Destroy Functions

Function	Description
`DBR_CreateInstance`	Creates an instance of Dynamsoft Barcode Reader.
`DBR_DestroyInstance`	Destroys the instance of Dynamsoft Barcode Reader.
`DBR_GetInstance`	Gets an idle Dynamsoft Barcode Reader instance running on concurrent instance mode.
`DBR_RecycleInstance`	Recycles a Dynamsoft Barcode Reader instance running on concurrent instance mode.

DBR_CreateInstance

Creates an instance of Dynamsoft Barcode Reader.

DBR_API void* DBR_CreateInstance ()	

Return Value

Returns an instance of Dynamsoft Barcode Reader. If failed, returns NULL.

Code Snippet

char errorBuf[512];
DBR_InitLicense("YOUR-LICENSE-KEY", errorBuf, 512);
void* barcodeReader = DBR_CreateInstance();
DBR_DestroyInstance(barcodeReader);

DBR_DestroyInstance

Destroys an instance of Dynamsoft Barcode Reader.

DBR_API void DBR_DestroyInstance (void* barcodeReader)	

Parameters

[in] barcodeReader Handle of the barcode reader instance.

Code Snippet

char errorBuf[512];
DBR_InitLicense("YOUR-LICENSE-KEY", errorBuf, 512);
void* barcodeReader = DBR_CreateInstance();
DBR_DestroyInstance(barcodeReader);

DBR_GetInstance

Gets an idle Dynamsoft Barcode Reader instance running on concurrent instance mode.

DBR_API void* DBR_GetInstance()

Return Value
Returns an idle Dynamsoft Barcode Reader instance running on concurrent instance mode. If failed, returns NULL.

Code Snippet

//Make sure DBR_InitLicense have been called somewhere before DBR_GetInstance
void* dbr = DBR_GetInstance();
// If no instance is available right away, the application will wait until one becomes available
if(dbr != NULL)
{
    // Add your code here to call decoding method, process barcode results and so on
    // ...
    // Recycle the instance to make it idle for other concurrent tasks
    DBR_RecycleInstance(dbr);
}

DBR_RecycleInstance

Recycles a Dynamsoft Barcode Reader instance running on concurrent instance mode.

DBR_API void DBR_RecycleInstance (void* barcodeReader)

Parameters

[in] barcodeReader Handle of a Dynamsoft Barcode Reader instance running on concurrent instance mode.

Code Snippet

//Make sure DBR_InitLicense have been called somewhere before DBR_GetInstance
void* dbr = DBR_GetInstance();
// If no instance is available right away, the application will wait until one becomes available
if(dbr != NULL)
{
    // Add your code here to call decoding method, process barcode results and so on
    // ...
    // Recycle the instance to make it idle for other concurrent tasks
    DBR_RecycleInstance(dbr);
}