Changes Between Win 3.1 and WFW 3.1 Versions of DDEML |
Q102572
The information in this article applies to:
-
Microsoft Windows Software Development Kit (SDK) 3.1
SUMMARY
The following changes have been made from the Windows 3.1 version of
DDEML to the version that shipped with Windows for Workgroups (WFW)
version 3.1:
- The default shutdown timeout was changed from 3,000 milliseconds to
30,000 milliseconds.
- DdeQueryConvInfo() added support for the new hwnd and hwndPartner
fields.
- DdeQueryConvInfo() added more robust handling for improper setting
of the CONVINFO structure's cb field when called.
- Rewrote DdePostAdvise() to supply the correct count of remaining
transactions to be processed on the same topic!item!format name set
for the XTYP_ADVREQ transaction.
- Disallow synchronous calls if the application is shutting down, or
if already in the middle of a synchronous transaction.
- DdeUninitialize() was fixed to defer processing if called while in
the middle of a synchronous transaction.
- DdeUninitialize() was fixed to dispatch any pending DDE messages and
to make necessary callbacks before quitting.
- Added call to DdeUninitialize() from within DdeClientTransaction()
when in the middle of a synchronous transaction and
DdeUninitialize() had been called.
- Allow any instance to call DdeCreateStringHandle().
- Have DdeAbandonTransaction() only mark abandoned transactions,
rather than trying to remove the transaction from internal
structures.
- Alter PostMessage() overflow queuing to queue based on target
instead of on the same task, so that one target queue overflow does
not bog down all PostMessage() calls.
Additional query words:
3.10