eIOAccelSurfaceLockBits Declarationtypedef enum eIOAccelSurfaceLockBits : unsigned int { ... } eIOAccelSurfaceLockBits; TopicsConstantskIOAccelSurfaceLockInAccelkIOAccelSurfaceLockInBackingkIOAccelSurfaceLockInDontCarekIOAccelSurfaceLockInMask