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Enumerating devices

Posted on 2004-03-22
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Last Modified: 2013-12-03
I understand that I can open and manipulate a device by passing a name such as "\\.\TAPE0" to CreateFile.  However, I can find NO documentation that tells me where to find out that a device is named TAPE0.  I know that I can use GetNTMSInformation to find the names of tape devices, but

1.  I am trying to avoid using RSM because it is so horribly flaky and unreliable.
2.  That does nothing for disk drives unless they are removable.

Any suggestions?
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Question by:dirtdart
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4 Comments
 
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by:jkr
jkr earned 250 total points
ID: 10649508
Check out http://support.microsoft.com/default.aspx?scid=kb;en-us;259695 ("HOWTO: Enumerate Hardware Devices by Using SetupDi Calls")
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by:dirtdart
ID: 10698600
That does enumerate all the hardware on a machine, but unless I'm missing something, I have no way to find the device name from the information retrieved.  As stated above, I need to know that the device is named "TAPE0", "TAPE1", etc.
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Cayce earned 250 total points
ID: 10761484
Check out the API call SetupDiGetDeviceInterfaceDetail (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/devio/base/setupdigetdeviceinterfacedetail.asp).

The DeviceInterfaceDetailData (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/devio/base/sp_device_interface_detail_data_str.asp) parameter includes the DevicePath that is what you are looking for.
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by:dirtdart
ID: 10832281
That looks like it would probably do what I need.  However, the answer came just in time for the project to get cancelled.  Hopefully I'll have some time to pick it back up one day.  Thanks for your help.
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