From ReactOS

typedef struct tagDEVINFO

{
    FLONG     flGraphicsCaps;     // 0x000
    LOGFONTW  lfDefaultFont;      // 0x004 (size = 0x5c = 92)
    LOGFONTW  lfAnsiVarFont;      // 0x060
    LOGFONTW  lfAnsiFixFont;      // 0x0bc
    ULONG     cFonts;             // 0x118
    ULONG     iDitherFormat;      // 0x11c
    USHORT    cxDither;           // 0x120
    USHORT    cyDither;           // 0x122
    HPALETTE  hpalDefault;        // 0x124
    FLONG     flGraphicsCaps2;    // 0x128
 // size = 0x12c = 300
} DEVINFO, *PDEVINFO;

References

• msdn DEVINFO
• Osr DEVINFO