DEVMGR_DEVICE_INFORMATION (Compact 2013)

3/26/2014

This structure contains information about a device driver. Some drivers might be accessible by means of multiple names. If a particular name does not exist, the first byte of the entry in the structure is NULL.

Syntax

typedef struct _DevmgrDeviceInformation_tag {
  DWORD dwSize;
  HANDLE hDevice;
  HANDLE hParentDevice;
  WCHAR szLegacyName[6];
  WCHAR szDeviceKey[MAX_PATH];
  WCHAR szDeviceName[MAX_PATH];
  WCHAR szBusName[MAX_PATH];
} DEVMGR_DEVICE_INFORMATION, *PDEVMGR_DEVICE_INFORMATION;

Members

• dwSize
  Size of this structure.

• hDevice
  Device handle.

• hParentDevice
  Parent device's handle obtained from ActivateDeviceEx.

• szLegacyName
  Legacy device name, for example, "COM1:".

• szDeviceKey
  Registry key path passed to ActivateDeviceEx.

• szDeviceName
  Device name in the $device namespace.

• szBusName
  Device name in the $bus namespace.

Remarks

The following list shows the ways the DEVMGR_DEVICE_INFORMATION structure can be used:

• Call ActivateDeviceEx, and then call GetDeviceInformationByDeviceHandle.
• Obtain an open file handle to the device using CreateFile, and then call GetDeviceInformationByFileHandle.
• Determine what devices are running in the system, or which devices support a particular interface by calling FindFirstDevice, and then calling FindNextDevice.

Requirements

Header

winbase.h

See Also

Reference

Device Manager Structures
ActivateDeviceEx
GetDeviceInformationByDeviceHandle
GetDeviceInformationByFileHandle
FindFirstDevice
FindNextDevice

Other Resources

CreateFile