SLDCDATA

typedef struct _SLDCDATA {
  ULONG       cb;                // length of control data in bytes
  USHORT      usScale1Increments;// number of divisions on scale 1
  USHORT      usScale1Spacing;   // space in pixels between increments
  USHORT      usScale2Increments;// number of divisions on scale 2
  USHORT      usScale2Spacing;   // space in pixels between increments
} SLDCDATA, *PSLDCDATA;