VMI_CMD_LINE - Remarks

The LINEINFO structure can describe a sequence of line segments where each 
line segment may be clipped.  The LINEINFO2 structure describes a sequence 
of line segments where only the start of the first segment and the end of 
the last segment may be clipped.  For many cases, the simpler LINEINFO2 
data can be generated more efficiently than for the more general LINEINFO 
data. 

The LINEINFO and LINEINFO2 structures can be differentiated using the 
ulLength field at the start of each structure. 

Since the LINEINFO2 mechanism was defined after several GRADDs were 
already released, a LINEINFO2 structure will not be passed to a GRADD 
unless the GRADD sets the DS_SIMPLE_LINES flag in the ulFCFlags member of 
the CAPSINFO structure returned for the GHI_CMD_QUERYCAPS function. Note 
that if a GRADD indicates it can handle the LINEINFO2 structure, it may 
still be passed a LINEINFO structure when that generality is needed.