[in] A handle to the error value generated in the previous method call.
[in] A bitmask of flags that controls the type of strings returned. The following flag can be set:
The strings in the MAPIERROR structure returned in the lppMAPIError parameter are in Unicode format. If the MAPI_UNICODE flag is not set, the strings are in ANSI format.
[out] A pointer to a pointer to a MAPIERROR structure that contains version, component, and context information for the error. The lppMAPIError parameter can be set to NULL if the provider cannot supply a MAPIERROR structure with appropriate information.
Address book providers implement the GetLastError method to supply information about a prior method call that failed. Callers can provide their users with detailed information about the error by including the data from the MAPIERROR structure in a dialog box.
You can use the MAPIERROR structure pointed to by the lppMAPIError parameter if the address book provider supplies the structure and only if GetLastError returns S_OK. Sometimes the address book provider cannot determine what the last error was or has nothing more to report about the error. In this situation, the address book provider returns a pointer to NULL in lppMAPIError instead.