LAN Manager Pop-up Messages While Running MS-DOS Applications (71300)


The information in this article applies to:

  • Microsoft Windows 3.0
  • Microsoft Windows 3.0a
This article was previously published under Q71300

SUMMARY

If you have Microsoft Windows 3.0 configured for a Microsoft LAN Manager 2.0 enhanced (or 100-percent-compatible) network, and the network is currently loaded, you can receive pop-up messages from a server or from other users on the network. These messages are displayed in a Windows pop-up panel titled "WinPopup," whose associated executable is WINPOPUP.EXE. This executable is typically on the LOAD= line in the WIN.INI file.

You cannot receive pop-up messages if you are currently running an MS-DOS application and any of the following conditions is true:

  • You are running Windows in real mode.
  • You are running Windows in standard mode.
  • You are running the MS-DOS application with full-screen and exclusive display and tasking options settings in Windows enhanced mode.
You can receive pop-up messages while running the MS-DOS application in Windows enhanced mode if the application is running in a window and/or the exclusive tasking option for the application is unchecked.

NOTE: If you are running a full-screen, nonexclusive MS-DOS application in Windows enhanced mode and you receive a pop-up message, the MS-DOS application will minimize to allow the pop-up message to be displayed.

MORE INFORMATION

The Messenger service receives the messages and passes them to NetPopup. However, if NetPopup detects that Windows is running, then it simply queues the messages (to prevent the messages from crashing Windows). WinPopup polls NetPopup every three seconds or so to determine if there are any messages. However, because WinPopup is running in the background,if you are running in real or standard mode or are running a full-screen exclusive MS-DOS session in enhanced mode, WinPopup is not able to respond. The message(s) will be displayed once you switch back to Windows or quit the MS-DOS application.

NOTE: In IBM's DOS LAN Requester, NETPOPUP.EXE is called MSGPOPUP.EXE. Also MSGPOPUP.EXE is loaded into memory when the /POP parameter is included in the NET START command.
Modification Type:MinorLast Reviewed:7/7/2005
Keywords:KB71300
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