The following information is provided as is, and the authors take no responsibility for the correctness.

DEVMODE Specifications

Over the years the DEVMODE structure has been extended. This page should give an overview of the differences.

Version	ID	Notes
DM_SPECVERSION_0320	0×0320	Windows NT 3.x
DM_SPECVERSION_0400	0×0400	Windows NT 4.0
DM_SPECVERSION_0401	0×0401	Windows 2000

typedef struct _devicemodeW {
    WCHAR  dmDeviceName[CCHDEVICENAME];
    WORD dmSpecVersion;
    WORD dmDriverVersion;
    WORD dmSize;
    WORD dmDriverExtra;
    DWORD dmFields;
    union {
      /* printer only fields */
      struct {
        short dmOrientation;
        short dmPaperSize;
        short dmPaperLength;
        short dmPaperWidth;
        short dmScale;
        short dmCopies;
        short dmDefaultSource;
        short dmPrintQuality;
      };
      /* display only fields */
      struct {
        POINTL dmPosition;
        DWORD  dmDisplayOrientation;
        DWORD  dmDisplayFixedOutput; 
      };
    };
    short dmColor;
    short dmDuplex;
    short dmYResolution;
    short dmTTOption;
    short dmCollate;
    WCHAR  dmFormName[CCHFORMNAME];
    WORD   dmLogPixels;
    DWORD  dmBitsPerPel;
    DWORD  dmPelsWidth;
    DWORD  dmPelsHeight;
    union {
        DWORD  dmDisplayFlags;
        DWORD  dmNup;
    };
    DWORD  dmDisplayFrequency;
#if(DM_SPECVERSION >= 0x0400)
    DWORD  dmICMMethod;
    DWORD  dmICMIntent;
    DWORD  dmMediaType;
    DWORD  dmDitherType;
    DWORD  dmReserved1;
    DWORD  dmReserved2;
#if (DM_SPECVERSION >= 0x0401)
    DWORD  dmPanningWidth;
    DWORD  dmPanningHeight;
#endif /* DM_SPECVERSION >= 0x0401 */
#endif /* DM_SPECVERSION >= 0x0400 */
} DEVMODEW, *PDEVMODEW, *NPDEVMODEW, *LPDEVMODEW;