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Brad's VB-32 Programs & Samples |
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| Posted: 08/19/98, last update: 03/17/99 | ||
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Brad's VB-32 Programs & Samples |
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| Posted: 08/19/98, last update: 03/17/99 | ||
| SHChangeNotify: An
example of how to *receive* shell change notifications We have the FindFirst/NextChangeNotification APIs that tell us when something changes in the physical file system. But what about the changes that happen in virtual folders implemented by namespace extension that aren't part of the physical file system? How does an Explorer window get updated when a new printer is added in the Printers folder, or a connection is deleted in the Dial-Up Networking folder? Enter the undocumented API functions SHChangeNotifyRegister and SHChangeNotifyDeregister. This demo shows how an application can use these functions to register itself with the shell, allowing the application to be notified of any specified changes that were made in any specified part of the namespace, from the desktop folder on down. The demo also provides a rather interesting study of what is actually happening in the namespace as well... Please note, use undocumented functions with care. There's no telling when they won't work anymore... 03/17/99 update (v1.10) - Added handling for SHCNE_EXTENDED_EVENT, occurs when shell menu items are repositioned. Download shnotify11.zip (23kb) |