cmdMode (LONG) - input
The only valid flag is:
MPATH_STROKE
The envelope includes the effects of "line joins" and "line ends" according to the current values of these attributes. For example, where a line joins an arc, the common point is handled according to the line join attribute in the current line attribute bundle. (See Line Attributes.) When a figure is closed by using GreCloseFigure, the line join attribute in the current line bundle is applied to the start and end points. The envelope takes account of any crossings. For example, a stroked X does not have a hole in the middle if it is subsequently drawn in Exclusive-OR mode.