Qualcomm 4.3 user manual Eudora Mapi Shutdown Procedure, Eudora DLL Swapping Restrictions

Eudora User Manual Eudora MAPI Shutdown Procedure

1Check to see whether or not the Eudora MAPI DLLs are already installed in the Windows SYSTEM directory. If so, then you are finished.

2Check for existing Microsoft MAPI.DLL and MAPI32.DLL files. If found, rename MAPI.DLL to MAPI.000 and rename MAPI32.DLL to MAPI32.000. (If a MAPI.000 file already exists, then Eudora uses MAPI.001, MAPI.002 etc.)

3Copy the EUMAPI.DLL and EUMAPI32.DLL files from the Eudora program directory to the Windows SYSTEM directory as MAPI.DLL and MAPI32.DLL, respectively.

Eudora MAPI Shutdown Procedure

When shutdown, Eudora runs the following “unswap” procedure when the user selects either the “When Eudora is running” or “Never” MAPI Server option in Eudora (see “MAPI Technical Report” on page 247; click the page number to display the topic).

1Check to see whether or not the Eudora MAPI DLLs are already installed in the Windows SYSTEM directory. If not, then you are finished.

2Delete the Eudora MAPI.DLL and MAPI32.DLL files.

3Rename the MAPI.000 and MAPI32.000 files, if any, to MAPI.DLL and MAPI32.DLL, respectively. (If a MAPI.001, MAPI.002, etc. file exists, then Eudora renames the one with the highest number.)

Eudora DLL Swapping Restrictions

It is important to note that there are several restrictions with the above Eudora swap and unswap procedures: The Eudora swap and unswap procedures can only run successfully if the MAPI.DLL and MAPI32.DLL are not currently “in use” by one or more MAPI client applications.

When a MAPI client application loads a MAPI or MAPI32 DLL file, Windows “locks” the DLL file while the library is loaded into memory to show that the file is “in use.” Eudora can normally detect that the MAPI.DLL and/or MAPI32.DLL files are “in use.” If Eudora detects that a MAPI or MAPI32 DLL is locked, it displays an error message and skips the swap or unswap procedure.

When Eudora is forced to skip the swap or unswap procedure, this means that the MAPI DLLs are in the wrong “state” with respect to Eudora — that is, 1) the Microsoft MAPI DLLs could be installed even after Eudora starts, or 2) the Eudora MAPI DLLs could be installed even after Eudora shuts down. To prevent this from happening, use the following procedure when using Eudora MAPI:

1Start Windows.

2Start Eudora.

3Start any MAPI client applications.

4Send attachments to Eudora via the installed Eudora MAPI interface.

5Shutdown all MAPI client applications.

6Shutdown Eudora.

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