This function is to be implemented by a service and will be called by Services.exe. This function need only be implemented by a streaming service.
DWORD xxx_Seek( DWORD dwData, long pos, DWORD type );
[in] Specifies the value returned by xxx_Open (Services.exe) for the given service instance.
[in] Specifies the number of bytes to move the file pointer. pos is a 32-bit signed value. A positive value for this parameter moves the file pointer forward in the file while a negative value moves the file pointer backward.
[in] Specifies the starting point for the file pointer move. The following table shows possible values.
The starting point is zero, or at the beginning of the file.
The starting point is the current value of the file pointer.
The starting point is the current end-of-file position.
This function is called by Services.exe as a result of an application's call to SetFilePointer.
Services.exe uses the xxx prefix. When implementing the stream interface, replace xxx with a prefix appropriate for your specific implementation.