The PAINTHARDNESSDISTRBTYPE enumerated type contains options that describe the hardness distribution throughout a paintbrush. These options are possible values for the nDistributionType member of the PAINTHARDNESS structure.
typedef enum
{
PAINT_HARDNESS_DISTRB_TYPE_0
} PAINTHARDNESSDISTRBTYPE, *pPAINTHARDNESSDISTRBTYPE;
Distributes the brush hardness starting from the center (harder) toward the outer edges (lighter).