usTickNum (USHORT)
Tick mark location whose size is to be changed. If the SMA_SETALLTICKS attribute is specified for this parameter, all tick marks on the primary scale are set to the size specified.
usTickSize (USHORT)
Length of the tick mark, in pixels. If set to 0, the tick mark will not be drawn.
ulReserved (ULONG)
rc (BOOL)