This message queries for the current position of a tick mark for the primary scale. This represents where the tick mark would be located. The tick mark does not have to have a size (that is, to be visible) to use this message.

param1
     USHORT  usTickNum   /*  Tick mark location. */

param2
     ULONG   ulReserved  /*  Reserved value, should be 0. */

returns
     USHORT  xTickPos    /*  X-coordinate. */
     USHORT  yTickPos    /*  Y-coordinate. */