cSize1 (ULONG)
If BRH_ERRORDIFFUSION is specified in usRendering, cSize1 is the error damping as a percentage in the range 0 through 100. A value of 100% indicates no damping, and a value of 0% indicates that any errors are not diffused.
If BRH_PANDA or BRH_SUPERCIRCLE is specified, cSize1 is the x dimension of the pattern used, in pels.