If you have not purchased a copy of LEADTOOLS ePrint 5 C DLL but wish to evaluate it, you must unlock the Evaluation ePrint COM.
Before programming with the LEADTOOLS ePrint 5 COM, you must unlock the Basic or OEM level of ePrint support.
Unlocking Evaluation ePrint C DLLs
If you have not purchased a copy of LEADTOOLS ePrint 5 C DLL but wish to evaluate it, you must unlock the Evaluation ePrint C DLLs by passing the SUPPORT_EVAL value for the lSupportType parameter and pass an empty string for the pszKey parameter.
Unlocking the Evaluation ePrint COM allows you to use all the ePrint COM objects during the evaluation period. The evaluation period lasts for 30 days.
Unlocking Basic ePrint Support
To determine whether ePrint support is locked, call the IsSupportLocked method.
To unlock ePrint support, call the UnlockSupport method and pass the key that you received when you purchased the product for the pszKey parameter. The UnlockSupport method unlocks and supports the Basic and OEM functionality features.
Unlocking OEM ePrint Support
To determine whether OEM ePrint support is locked, call the IsOEMPrinterLocked method.
To unlock the OEM ePrint printer to enable any application to print directly to it, call the UnlockOEMPrinter method.
For more information on locking and unlocking the OEM ePrint Printer, refer to: