License Functions

Function	Description
`DBR_InitLicense`	Initializes license key and activate the SDK.
`DBR_GetIdleInstancesCount`	Gets available instances count when charging by concurrent instances count.
`DBR_InitLicenseFromServer`	`Deprecated`
`DBR_InitLicenseFromLicenseContent`	`Deprecated`
`DBR_OutputLicenseToString`	`Deprecated`
`DBR_OutputLicenseToStringPtr`	`Deprecated`
`DBR_FreeLicenseString`	`Deprecated`
`DBR_InitDLSConnectionParameters`	`Deprecated`
`DBR_InitLicenseFromDLS`	`Deprecated`
`DBR_InitLTSConnectionParameters`	`Deprecated`
`DBR_InitLicenseFromLTS`	`Deprecated`

DBR_InitLicense

Initializes license key and activate the SDK.

DBR_API int DBR_InitLicense (const char* pLicense, char errorMsgBuffer[], const int errorMsgBufferLen)

Parameters

[in] pLicense The license string.

[in, out] errorMsgBuffer The buffer is allocated by caller and the recommended length is 512. The error message will be copied to the buffer.

[in] errorMsgBufferLen The length of allocated buffer.

Return Value

Returns error code (returns 0 if the function operates successfully).

You can call DBR_GetErrorString to get detailed error message.

Code Snippet

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

DBR_GetIdleInstancesCount

Gets available instances count when charging by concurrent instances count.

DBR_API int DBR_GetIdleInstancesCount()

Return Value

Returns available instances count.

0: There is no space for new instance
-1: The available count needs to be updated from server by calling DBR_InitLicense.
N ( N > 0 ): N more instances can be created.

Code Snippet

//...
int count = DBR_GetIdleInstancesCount();
if(count > 0)
{
  //create instance and process further
}
if(count < 0)
{
  //call DBR_InitLicense
  //create instance and process further
}
if(count = 0)
{
  //waiting for available instances 
}