Microsoft KB Archive/108842

= PC MAPI: Using Simple MAPI on Windows NT and NTAS =

Article ID: 108842

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Mail Client 3.0
 * Microsoft Mail Client 3.0
 * Microsoft Mail Client 3.2

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This article was previously published under Q108842



SUMMARY
The Simple Messaging Application Programming Interface (MAPI) can be used on Microsoft Windows NT and Microsoft Windows NT Advanced Server in the following configurations:

CONFIGURATION 1
Simple MAPI applications written for 16-bit Windows and Windows for Workgroups Mail can be used with the 32-bit NT Mail client. There is a 16- bit MAPI.DLL that "thunks" the 16-bit calls to the 32-bit MAPI32.DLL and requires no additional 16-bit Mail files.

Configuration 2
Windows NT includes MAPI32.DLL, a 32-bit Simple MAPI DLL for developing 32-bit applications for the 32-bit NT Mail client.

Configuration 3
In order for 16-bit MAPI applications to work with 16-bit Microsoft Mail installed on Windows NT, you must copy the 16-bit MAPI.DLL that comes with versions 3.0, 3.0b, and 3.2 of Microsoft Mail into the WINNT\SYSTEM32 directory.

Additional query words: 3.00 3.00b 3.20

Keywords: KB108842

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