SLDCDATA
From EDM2
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;