Getting a list of hardware devices

Hi,
The first part of my question is : How do I query windows to see if a specific hardware device is installed.

And the second part is: Is there a way to tell windows to load or unload a particular driver programatically in C++

Thanks

Adam

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How do I query windows to see if a specific hardware device is installed

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A good starting point would be Windows Management Instrumentation (WMI). Check out hardware tasks.

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Is there a way to tell windows to load or unload a particular driver programatically in C++

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First method would be to use SystemLoadAndCallImage which is an undocumented API. Second method would be to use the Service Control Manager to load/unload a device driver.