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README.md

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get-parent-device

This program finds Device Instance ID of a parent of a Device given by another Device Instance ID. The main reason to create this program was to be able to obtain "bus relation" of Win32_PnPEntity objects connected to Win32_UsbController, because plain WMI cannot do that.

For the details see the source of the main.cpp file.

Dependencies & build instructions

This program compiled without problems with Visual Studio 2012 Express Edition for Desktop and Windows Driver Kit 7600.16385.1 installed.

The Windows Driver Kit is required, because program uses SetupAPI functions which are a part of Windows Driver Kit.

Running

To run, the program requires MSVC Redistributable Package installed, or at least, requires the following files from c:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\redist\x86\Microsoft.VC110.CRT to be distributed along with the executable:

  • msvcp110.dll
  • msvcr110.dll
  • vccorlib110.dll

Usage

    get-parent-device.exe DII PATTERN

Arguments:

    DII     - Device Instance ID of the Device whose parent is to be found
    PATTERN - Regular expression to match Parent's Device Instance ID

Examples:

  1. Get immediate parent:

    get-parent-device.exe "USBSTOR\DISK&VEN_GENERIC&PROD_STORAGE_DEVICE&REV_0207\000000000207&0" ".*"

    In this case the ".*" will cause first found parent to be returned.

  2. Get usb hub the device is connected to:

    get-parent-device.exe "USBSTOR\DISK&VEN_GENERIC&PROD_STORAGE_DEVICE&REV_0207\000000000207&0" ".*\\ROOT_HUB.*"

    The program will search "up" the device tree until it finds a parent with a matching Device Instance ID.