Серийный номер USB устройства
Серийный номер USB устройства
Серийный номер USB устройства uses JwaWinIoctl; procedure GetSerial:String; var Dummy :DWord; FHandle :Cardinal; RealPath :String; dg :CHANGER_PRODUCT_DATA; //falscher Datentyp? Laut SDK musste es eigentlich // MEDIA_SERIAL_NUMBER_DATA sein aber den gibs nicht Serial :String; i :byte; begin RealPath:='\\.\F:'; FHandle:=CreateFile(PChar(RealPath),GENERIC_READ or GENERIC_WRITE, FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); if DeviceIOControl(FHandle,IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER, nil, 0, @dg, sizeof(dg), dummy, nil) then begin Serial:=''; for i:=0 to 31 do Serial:=Serial+IntToStr(dg.SerialNumber[i]); Result:=Serial; end; end; end; Inc(pDrive, 4); end; end; *************************************************************** MEDIA_SERIAL_NUMBER_DATA Structure Contains the serial number of a USB device. It is used by the IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER control code. typedef struct _MEDIA_SERIAL_NUMBER_DATA { ULONG SerialNumberLength; ULONG Result; ULONG Reserved[2]; UCHAR SerialNumberData[]; } MEDIA_SERIAL_NUMBER_DATA, *PMEDIA_SERIAL_NUMBER_DATA; Members SerialNumberLength The size of the SerialNumberData string, in bytes. Result The status of the request. Reserved Reserved. SerialNumberData The serial number of the device. Remarks No header file is available for the MEDIA_SERIAL_NUMBER_DATA structure. Include the structure definition at the top of this page in your source code. RequirementsClient Requires Windows Vista or Windows XP. *********************************************************************** IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER Control Code Retrieves the serial number of a USB device. To perform this operation, call the DeviceIoControl function with the following parameters. BOOL DeviceIoControl( (HANDLE) hDevice, // handle to device IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER, // dwIoControlCode NULL, // lpInBuffer 0, // nInBufferSize (LPVOID) lpOutBuffer, // output buffer (DWORD) nOutBufferSize, // size of output buffer (LPDWORD) lpBytesReturned, // number of bytes returned (LPOVERLAPPED) lpOverlapped // OVERLAPPED structure ); Parameters hDevice A handle to the device. To obtain a device handle, call the CreateFile function. dwIoControlCode The control code for the operation. Use IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER for this operation. lpInBuffer Not used with this operation; set to NULL. nInBufferSize Not used with this operation; set to zero. lpOutBuffer A pointer to a MEDIA_SERIAL_NUMBER_DATA structure that receives the serial number. nOutBufferSize The size of the output buffer, in bytes. lpBytesReturned A pointer to a variable that receives the size of the data stored in the output buffer, in bytes. If the output buffer is too small, the call fails, GetLastError returns ERROR_INSUFFICIENT_BUFFER, and lpBytesReturned is zero. If lpOverlapped is NULL, lpBytesReturned cannot be NULL. Even when an operation returns no output data and lpOutBuffer is NULL, DeviceIoControl makes use of lpBytesReturned. After such an operation, the value of lpBytesReturned is meaningless. If lpOverlapped is not NULL, lpBytesReturned can be NULL. If this parameter is not NULL and the operation returns data, lpBytesReturned is meaningless until the overlapped operation has completed. To retrieve the number of bytes returned, call GetOverlappedResult. If hDevice is associated with an I/O completion port, you can retrieve the number of bytes returned by calling GetQueuedCompletionStatus. lpOverlapped A pointer to an OVERLAPPED structure. If hDevice was opened without specifying FILE_FLAG_OVERLAPPED, lpOverlapped is ignored. If hDevice was opened with the FILE_FLAG_OVERLAPPED flag, the operation is performed as an overlapped (asynchronous) operation. In this case, lpOverlapped must point to a valid OVERLAPPED structure that contains a handle to an event object. Otherwise, the function fails in unpredictable ways. For overlapped operations, DeviceIoControl returns immediately, and the event object is signaled when the operation has been completed. Otherwise, the function does not return until the operation has been completed or an error occurs. Return Value If the operation completes successfully, DeviceIoControl returns a nonzero value. If the operation fails or is pending, DeviceIoControl returns zero. To get extended error information, call GetLastError. RequirementsClient Requires Windows Vista or Windows XP.
