Set the antialias behavior
#include <gf/gf.h> void gf_context_set_antialias( gf_context_t context, unsigned flags );
This function sets the antialias behavior for subsequent draw operations for a draw context. After this function is called, antialiasing is applied to all applicable draw primitives (polylines and polygons). Antialiasing allows you to visually approximate an ideal resolution display by varying the intensities of discrete pixels, making edges appear smoother.
QNX Graphics Framework