[in] A handle to the error value generated in the previous method call for the support object.
[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 the MAPIERROR structure that contains version, component, and context information for the error. The lppMAPIError parameter can be set to NULL if a MAPIERROR structure with appropriate error information cannot be provided.
The IMAPISupport::GetLastError method is implemented for all support objects. 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 pointer to the MAPIERROR structure, if MAPI supplies one, in the lppMAPIError parameter only if GetLastError returns S_OK. Sometimes MAPI cannot determine what the last error was or it has nothing more to report about the error. In this situation, lppMAPIError returns a pointer to NULL instead.