Property Set Header

At the beginning of the property set stream is a header. It consists of a byte-order indicator, a format version, the originating operating system version, the CLSID, and a reserved field.

The following pseudo-structure illustrates the header:

typedef struct tagPROPERTYSETHEADER

{ 

    // Header

    WORD   wByteOrder ;  // Always 0xFFFE

    WORD   wFormat ;     // Always 0

    DWORD   dwOSVer ;     // System version

    CLSID  clsID ;       // Application CLSID

    DWORD  reserved ;    // Should be 1

} PROPERTYSETHEADER;