DIPROPHEADER

DIPROPHEADER is a generic structure placed at the beginning of all property structures.

typedef struct { 
    DWORD    dwSize; 
    DWORD    dwHeaderSize; 
    DWORD    dwObj; 
    DWORD    dwHow; 
} DIPROPHEADER, *LPDIPROPHEADER; 
 
typedef const DIPROPHEADER *LPCDIPROPHEADER;

Members

dwSize
Size of the enclosing structure. This member must be initialized before the structure is used.
dwHeaderSize
Size of the DIPROPHEADER structure.
dwObj
Object for which the property is to be accessed. The value set for this member depends on the value specified in the dwHow member.
dwHow
Value specifying how the dwObj member should be interpreted. This value can be one of the following:
Value Meaning
DIPH_DEVICE The dwObj member must be zero.
DIPH_BYOFFSET The dwObj member is the offset into the current data format of the object whose property is being accessed.
DIPH_BYID The dwObj member is the object type/instance identifier. This identifier is returned in the dwType member of the DIDEVICEOBJECTINSTANCE structure returned from a previous call to the IDirectInputDevice::EnumObjects member.

QuickInfo

  Windows NT: Use version 5.0 or later.
  Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
  Windows CE: Unsupported.
  Header: Declared in dinput.h.