Call this function to verify that the license file named by pszLicFileName is valid for the OLE control.
The instance handle of the DLL associated with the licensed control.
Points to a null-terminated character string containing the license filename.
Points to a byte sequence that must match the sequence found at the beginning of the license file.
Number of characters in pszLicFileContents.
Nonzero if the license file exists and begins with the character sequence in pszLicFileContents; otherwise 0.