Determines whether the display pointer that this interface refers to is to the left of another one.
HRESULT retVal = object.IsLeftOf(pDispPointer, pfIsLeftOf);
A pointer to an IDisplayPointer interface that specifies the display pointer to compare to this one.
A pointer to a variable of type BOOL that receives TRUE if the display pointer represented by this interface is to the left of pDispPointer, or FALSE otherwise.
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.