The IMAPIFormContainer::ResolveMultipleMessageClasses method resolves a group of message classes to their forms within a form container and returns an array of form information objects for those forms.
See IMAPIFormContainer : IUnknown.
HRESULT ResolveMultipleMessageClasses (
LPSMESSAGECLASSARRAY pMsgClassArray,
ULONG ulFlags,
LPSMAPIFORMINFOARRAY FAR * ppfrminfoarray
);
Client applications call the IMAPIFormContainer::ResolveMultipleMessageClasses method to resolve a group of message classes to forms within a form container. The array of form information objects returned in the ppfrminfoarray parameter provides further access to each of the forms' properties.
To resolve a group of message classes to forms, pass in an array of message class names to be resolved. To force the resolution to be exact — that is, to prevent resolution to a superclass of the message class — the MAPIFORM_EXACTMATCH flag can be passed in the ulFlags parameter.
If a message class cannot be resolved to a form, NULL is returned for that message class in the form information array. Therefore, even if the method returns S_OK, do not assume that all message classes have been successfully resolved. Instead, check the values in the returned array.
IMAPIFormContainer::ResolveMessageClass