Microsoft KB Archive/151889

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Cannot Replace Default Port Monitor for Standard Printer Ports

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Q151889

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The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) Windows 95

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SUMMARY
The default port monitor that handles the standard printer ports (LPT1-LPT9 and COM1-COM9) cannot be replaced with a different port monitor.

MORE INFORMATION
In Windows 95, SPOOLSS.DLL contains default print subsystem components such as the default print processor (WINPRINT) and the default port monitor (LOCALMON). Windows 95 can have more than one port monitor installed on the system and each port monitor can handle a variety of port names.

However, SPOOLSS.DLL will always call its internal port monitor (LOCALMON) first and allow it to provide support for printing to the standard printer ports. Once it returns that it has handled the call, no more installed port monitors are called. Since SPOOLSS.DLL cannot be replaced or modified, there is no way to have your port monitor called for LPT1-LPT9 or COM1- COM9. This is by design.

Additional query words: 4.00 hardware spool subsystem print

Keywords : kbDDK kbPrinting

Issue type :

Technology : kbAudDeveloper kbWin95search kbWinDDKSearch kbWin32sSearch kbWin32DDK95 kbWin32DDKSearch