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---
page_type: sample
languages:
- cpp
products:
- windows-api-win32
name: Windows Search Prioritization and Eventing sample
urlFragment: windows-search-prioritization-sample
description: Demonstrates how to implement and use the IRowsetEvents interface to monitor changes to items belonging to a query over a particular scope.
extendedZipContent:
- path: LICENSE
target: LICENSE
---
# Windows Search Prioritization and Eventing Sample
This demo illustrates how to implement and use the IRowsetEvents interface to monitor changes to items belonging to a query over a particular scope. This demo also shows how to use the IRowsetPrioritization interface to set the indexing speed and priority of items also belonging to that scope.
## Sample Language Implementations
C++
## Files
* *Eventing.sln*
* *Eventing.vcproj*
* *evtdemo.cpp*
## To build the sample using Visual Studio
1. Open Windows Explorer and navigate to the *ShellStorage* directory.
1. Double-click the icon for the *ShellStorage.sln* file to open the file in Visual Studio.
1. In the **Build** menu, select **Build Solution**. The application will be built in the default *Debug* or *Release* directory.
Note that this sample requires ATL (installed with Visual Studio).
## To run the sample
1. Navigate to the directory that contains the new executable using the command prompt.
1. Type **evtdemo.exe** at the command line to see the usage.
```
Allows monitoring and prioritization of indexer URLs.
Eventing.exe [drive:][path] [/p[:]priority] [/t[:]duration]
[drive:][path]
Specifies drive and directory of location to watch
/p Prioritizes indexing at the given speed
priority F Foreground H High
L Low D Default
/t Specifies how long in MS to monitor query
duration 0 Until all content is indexed
NNNN Monitor for NNNN milliseconds
Examples would be:
Eventing.exe /p:f C:\users
To monitor all events occurring under C:\users and to prioritize any items needed to be indexed under that location.
Eventing.exe /p:l /t:0 C:\music
To monitor all events occurring under C:\music and to wait until all items have been indexed before exiting.
```