MAPIRESOLVENAME callback function (mapi.h)

Article
04/19/2022

[The use of this function is discouraged. It may be altered or unavailable in subsequent versions of Windows.]

The MAPIResolveName function transforms a message recipient's name as entered by a user to an unambiguous address list entry.

Syntax

MAPIRESOLVENAME Mapiresolvename;

ULONG Mapiresolvename(
  [in]  LHANDLE lhSession,
  [in]  ULONG_PTR ulUIParam,
  [in]  LPSTR lpszName,
  [in]  FLAGS flFlags,
        ULONG ulReserved,
        lpMapiRecipDesc *lppRecip
)
{...}

Parameters

[in] lhSession

Handle that represents a Simple MAPI session or zero. If the value of the lhSession parameter is zero, MAPI logs on the user and creates a session that exists only for the duration of the call. This temporary session can be an existing shared session or a new one. If necessary, the logon dialog box is displayed.

[in] ulUIParam

Parent window handle or zero, indicating that if a dialog box is displayed, it is application modal. If the ulUIParam parameter contains a parent window handle, it is of type HWND (cast to a ULONG_PTR). If no dialog box is displayed during the call, ulUIParam is ignored.

[in] lpszName

Pointer to the name to be resolved.

[in] flFlags

Bitmask of option flags. The following flags can be set.

Value	Meaning
MAPI_AB_NOMODIFY	The caller is requesting that the dialog box be read-only, prohibiting changes. MAPIResolveName ignores this flag if MAPI_DIALOG is not set.
MAPI_DIALOG	A dialog box should be displayed for name resolution. If this flag is not set and the name cannot be resolved, MAPIResolveName returns the MAPI_E_AMBIGUOUS_RECIPIENT value.
MAPI_LOGON_UI	A dialog box should be displayed to prompt the user to log on if required. When the MAPI_LOGON_UI flag is not set, the client application does not display a logon dialog box and returns an error value if the user is not logged on.
MAPI_NEW_SESSION	An attempt should be made to create a new session rather than acquire the environment's shared session. If the MAPI_NEW_SESSION flag is not set, MAPIResolveName uses an existing shared session.

ulReserved

Reserved; must be zero.

lppRecip

Return value

This function returns one of the following values.

Return code	Description
MAPI_E_AMBIGUOUS_RECIPIENT	The recipient requested has not been or could not be resolved to a unique address list entry.
MAPI_E_UNKNOWN_RECIPIENT	The recipient could not be resolved to any address. The recipient might not exist or might be unknown.
MAPI_E_FAILURE	One or more unspecified errors occurred. The name was not resolved.
MAPI_E_INSUFFICIENT_MEMORY	There was insufficient memory to proceed. The name was not resolved.
MAPI_E_LOGIN_FAILURE	There was no default logon, and the user failed to log on successfully when the logon dialog box was displayed. The name was not resolved.
MAPI_E_NOT_SUPPORTED	The operation was not supported by the underlying messaging system.
MAPI_E_USER_ABORT	The user canceled one of the dialog boxes. The name was not resolved.
SUCCESS_SUCCESS	The call succeeded and the name was resolved.

Remarks

The MAPIResolveName function resolves a message recipient's name (as entered by a user) to an unambiguous address list entry, optionally prompting the user to choose between possible entries, if necessary. A recipient descriptor structure containing fully resolved information about the entry is allocated and returned. The caller should free this MapiRecipDesc structure at some point by calling the MAPIFreeBuffer function. If MAPIResolveName returns an error value, it is not necessary to deallocate memory with MAPIFreeBuffer.

Requirements

Requirement	Value
Target Platform	Windows
Header	mapi.h