DEVMODE 结构体

typedef struct _devicemode {
  TCHAR dmDeviceName[CCHDEVICENAME]; //打印机（显示设备）名称
  WORD  dmSpecVersion;
  WORD  dmDriverVersion;  //驱动版本号
  WORD  dmSize; //结构体大小
  WORD  dmDriverExtra;
  DWORD dmFields;
  union {
    struct {
      short dmOrientation; //DMORIENT_PORTRAIT (1) 纵向 or DMORIENT_LANDSCAPE (2) 横向
      short dmPaperSize; //打印纸张类型  常用 A3:8,A4,9 ,详见下图
      short dmPaperLength; //只针对打印机， 覆盖dmPaperSize指定的纸张长度 ，单位0.1mm
      short dmPaperWidth; //只针对打印机，覆盖dmPaperSize指定的纸张宽度,单位0.1mm
      short dmScale; // 设置打印输出缩放因子，缩放比例为dmScale/100
      short dmCopies; //设置打印份数（如果打印机支持的话）
      short dmDefaultSource;// 指定打印机纸张来源，通过DC_BINS 标志调用DeviceCapabilities函数获取打印机可用纸张来源列表
      short dmPrintQuality;//指定打印机质量（分辨率）DMRES_DRAFT(-1),DMRES_LOW(-2),DMRES_MEDIUM(-3),DMRES_HIGH(-4),指定正值，则表示设置的是DPI
};

    struct {
      POINTL dmPosition;
      DWORD  dmDisplayOrientation;
      DWORD  dmDisplayFixedOutput;
    };
  };
  short dmColor; //黑白，彩色设定 DMCOLOR_MONOCHROME（1）：黑白， DMCOLOR_COLOR（2）：彩色
  short dmDuplex;//单面/双面设置，DMDUP_SIMPLEX（1），单面；DMDUP_VERTICAL（2），长边装订（左侧翻页)，DMDUP_HORIZONTAL（3），短边装订(顶端翻页）
  short dmYResolution;//指定Y轴DPI，若初始化设定这个值，PrintQuality 设置值为X轴DPI
  short dmTTOption;
  short dmCollate;//设定打印多页时，是否整理。DMCOLLATE_TRUE（1），整理；DMCOLLATE_FALSE（0），不整理
  TCHAR dmFormName[CCHFORMNAME]; //表单名称，如"Letter" or "Legal"，完整表单列表通过，EnumForms 函数获取
  WORD  dmLogPixels;
  DWORD dmBitsPerPel;
  DWORD dmPelsWidth;
  DWORD dmPelsHeight;
  union {
    DWORD dmDisplayFlags;
    DWORD dmNup;
  };
  DWORD dmDisplayFrequency;
#if (WINVER >= 0x0400)
  DWORD dmICMMethod;
  DWORD dmICMIntent;
  DWORD dmMediaType;
  DWORD dmDitherType;
  DWORD dmReserved1;
  DWORD dmReserved2;
#if (WINVER >= 0x0500) || (_WIN32_WINNT >= 0x0400)
  DWORD dmPanningWidth;
  DWORD dmPanningHeight;
#endif
#endif
}

　　

常用尺寸：

/* paper selections */
#define DMPAPER_FIRST DMPAPER_LETTER
#define DMPAPER_LETTER 1 /* Letter 8 1/2 x 11 in */
#define DMPAPER_LETTERSMALL 2 /* Letter Small 8 1/2 x 11 in */
#define DMPAPER_TABLOID 3 /* Tabloid 11 x 17 in */
#define DMPAPER_LEDGER 4 /* Ledger 17 x 11 in */
#define DMPAPER_LEGAL 5 /* Legal 8 1/2 x 14 in */
#define DMPAPER_STATEMENT 6 /* Statement 5 1/2 x 8 1/2 in */
#define DMPAPER_EXECUTIVE 7 /* Executive 7 1/4 x 10 1/2 in */
#define DMPAPER_A3 8 /* A3 297 x 420 mm */
#define DMPAPER_A4 9 /* A4 210 x 297 mm */
#define DMPAPER_A4SMALL 10 /* A4 Small 210 x 297 mm */
#define DMPAPER_A5 11 /* A5 148 x 210 mm */
#define DMPAPER_B4 12 /* B4 (JIS) 250 x 354 */
#define DMPAPER_B5 13 /* B5 (JIS) 182 x 257 mm */
#define DMPAPER_FOLIO 14 /* Folio 8 1/2 x 13 in */
#define DMPAPER_QUARTO 15 /* Quarto 215 x 275 mm */
#define DMPAPER_10X14 16 /* 10x14 in */
#define DMPAPER_11X17 17 /* 11x17 in */
#define DMPAPER_NOTE 18 /* Note 8 1/2 x 11 in */
#define DMPAPER_ENV_9 19 /* Envelope #9 3 7/8 x 8 7/8 */
#define DMPAPER_ENV_10 20 /* Envelope #10 4 1/8 x 9 1/2 */
#define DMPAPER_ENV_11 21 /* Envelope #11 4 1/2 x 10 3/8 */
#define DMPAPER_ENV_12 22 /* Envelope #12 4 \276 x 11 */
#define DMPAPER_ENV_14 23 /* Envelope #14 5 x 11 1/2 */
#define DMPAPER_CSHEET 24 /* C size sheet */
#define DMPAPER_DSHEET 25 /* D size sheet */
#define DMPAPER_ESHEET 26 /* E size sheet */
#define DMPAPER_ENV_DL 27 /* Envelope DL 110 x 220mm */
#define DMPAPER_ENV_C5 28 /* Envelope C5 162 x 229 mm */
#define DMPAPER_ENV_C3 29 /* Envelope C3 324 x 458 mm */
#define DMPAPER_ENV_C4 30 /* Envelope C4 229 x 324 mm */
#define DMPAPER_ENV_C6 31 /* Envelope C6 114 x 162 mm */
#define DMPAPER_ENV_C65 32 /* Envelope C65 114 x 229 mm */
#define DMPAPER_ENV_B4 33 /* Envelope B4 250 x 353 mm */
#define DMPAPER_ENV_B5 34 /* Envelope B5 176 x 250 mm */
#define DMPAPER_ENV_B6 35 /* Envelope B6 176 x 125 mm */
#define DMPAPER_ENV_ITALY 36 /* Envelope 110 x 230 mm */
#define DMPAPER_ENV_MONARCH 37 /* Envelope Monarch 3.875 x 7.5 in */
#define DMPAPER_ENV_PERSONAL 38 /* 6 3/4 Envelope 3 5/8 x 6 1/2 in */
#define DMPAPER_FANFOLD_US 39 /* US Std Fanfold 14 7/8 x 11 in */
#define DMPAPER_FANFOLD_STD_GERMAN 40 /* German Std Fanfold 8 1/2 x 12 in */
#define DMPAPER_FANFOLD_LGL_GERMAN 41 /* German Legal Fanfold 8 1/2 x 13 in */
#if(WINVER >= 0x0400)
#define DMPAPER_ISO_B4 42 /* B4 (ISO) 250 x 353 mm */
#define DMPAPER_JAPANESE_POSTCARD 43 /* Japanese Postcard 100 x 148 mm */
#define DMPAPER_9X11 44 /* 9 x 11 in */
#define DMPAPER_10X11 45 /* 10 x 11 in */
#define DMPAPER_15X11 46 /* 15 x 11 in */
#define DMPAPER_ENV_INVITE 47 /* Envelope Invite 220 x 220 mm */
#define DMPAPER_RESERVED_48 48 /* RESERVED--DO NOT USE */
#define DMPAPER_RESERVED_49 49 /* RESERVED--DO NOT USE */
#define DMPAPER_LETTER_EXTRA 50 /* Letter Extra 9 \275 x 12 in */
#define DMPAPER_LEGAL_EXTRA 51 /* Legal Extra 9 \275 x 15 in */
#define DMPAPER_TABLOID_EXTRA 52 /* Tabloid Extra 11.69 x 18 in */
#define DMPAPER_A4_EXTRA 53 /* A4 Extra 9.27 x 12.69 in */
#define DMPAPER_LETTER_TRANSVERSE 54 /* Letter Transverse 8 \275 x 11 in */
#define DMPAPER_A4_TRANSVERSE 55 /* A4 Transverse 210 x 297 mm */
#define DMPAPER_LETTER_EXTRA_TRANSVERSE 56 /* Letter Extra Transverse 9\275 x 12 in */
#define DMPAPER_A_PLUS 57 /* SuperA/SuperA/A4 227 x 356 mm */
#define DMPAPER_B_PLUS 58 /* SuperB/SuperB/A3 305 x 487 mm */
#define DMPAPER_LETTER_PLUS 59 /* Letter Plus 8.5 x 12.69 in */
#define DMPAPER_A4_PLUS 60 /* A4 Plus 210 x 330 mm */
#define DMPAPER_A5_TRANSVERSE 61 /* A5 Transverse 148 x 210 mm */
#define DMPAPER_B5_TRANSVERSE 62 /* B5 (JIS) Transverse 182 x 257 mm */
#define DMPAPER_A3_EXTRA 63 /* A3 Extra 322 x 445 mm */
#define DMPAPER_A5_EXTRA 64 /* A5 Extra 174 x 235 mm */
#define DMPAPER_B5_EXTRA 65 /* B5 (ISO) Extra 201 x 276 mm */
#define DMPAPER_A2 66 /* A2 420 x 594 mm */
#define DMPAPER_A3_TRANSVERSE 67 /* A3 Transverse 297 x 420 mm */
#define DMPAPER_A3_EXTRA_TRANSVERSE 68 /* A3 Extra Transverse 322 x 445 mm */
#endif /* WINVER >= 0x0400 */

#if(WINVER >= 0x0500)
#define DMPAPER_DBL_JAPANESE_POSTCARD 69 /* Japanese Double Postcard 200 x 148 mm */
#define DMPAPER_A6 70 /* A6 105 x 148 mm */
#define DMPAPER_JENV_KAKU2 71 /* Japanese Envelope Kaku #2 */
#define DMPAPER_JENV_KAKU3 72 /* Japanese Envelope Kaku #3 */
#define DMPAPER_JENV_CHOU3 73 /* Japanese Envelope Chou #3 */
#define DMPAPER_JENV_CHOU4 74 /* Japanese Envelope Chou #4 */
#define DMPAPER_LETTER_ROTATED 75 /* Letter Rotated 11 x 8 1/2 11 in */
#define DMPAPER_A3_ROTATED 76 /* A3 Rotated 420 x 297 mm */
#define DMPAPER_A4_ROTATED 77 /* A4 Rotated 297 x 210 mm */
#define DMPAPER_A5_ROTATED 78 /* A5 Rotated 210 x 148 mm */
#define DMPAPER_B4_JIS_ROTATED 79 /* B4 (JIS) Rotated 364 x 257 mm */
#define DMPAPER_B5_JIS_ROTATED 80 /* B5 (JIS) Rotated 257 x 182 mm */
#define DMPAPER_JAPANESE_POSTCARD_ROTATED 81 /* Japanese Postcard Rotated 148 x 100 mm */
#define DMPAPER_DBL_JAPANESE_POSTCARD_ROTATED 82 /* Double Japanese Postcard Rotated 148 x 200 mm */
#define DMPAPER_A6_ROTATED 83 /* A6 Rotated 148 x 105 mm */
#define DMPAPER_JENV_KAKU2_ROTATED 84 /* Japanese Envelope Kaku #2 Rotated */
#define DMPAPER_JENV_KAKU3_ROTATED 85 /* Japanese Envelope Kaku #3 Rotated */
#define DMPAPER_JENV_CHOU3_ROTATED 86 /* Japanese Envelope Chou #3 Rotated */
#define DMPAPER_JENV_CHOU4_ROTATED 87 /* Japanese Envelope Chou #4 Rotated */
#define DMPAPER_B6_JIS 88 /* B6 (JIS) 128 x 182 mm */
#define DMPAPER_B6_JIS_ROTATED 89 /* B6 (JIS) Rotated 182 x 128 mm */
#define DMPAPER_12X11 90 /* 12 x 11 in */
#define DMPAPER_JENV_YOU4 91 /* Japanese Envelope You #4 */
#define DMPAPER_JENV_YOU4_ROTATED 92 /* Japanese Envelope You #4 Rotated*/
#define DMPAPER_P16K 93 /* PRC 16K 146 x 215 mm */
#define DMPAPER_P32K 94 /* PRC 32K 97 x 151 mm */
#define DMPAPER_P32KBIG 95 /* PRC 32K(Big) 97 x 151 mm */
#define DMPAPER_PENV_1 96 /* PRC Envelope #1 102 x 165 mm */
#define DMPAPER_PENV_2 97 /* PRC Envelope #2 102 x 176 mm */
#define DMPAPER_PENV_3 98 /* PRC Envelope #3 125 x 176 mm */
#define DMPAPER_PENV_4 99 /* PRC Envelope #4 110 x 208 mm */
#define DMPAPER_PENV_5 100 /* PRC Envelope #5 110 x 220 mm */
#define DMPAPER_PENV_6 101 /* PRC Envelope #6 120 x 230 mm */
#define DMPAPER_PENV_7 102 /* PRC Envelope #7 160 x 230 mm */
#define DMPAPER_PENV_8 103 /* PRC Envelope #8 120 x 309 mm */
#define DMPAPER_PENV_9 104 /* PRC Envelope #9 229 x 324 mm */
#define DMPAPER_PENV_10 105 /* PRC Envelope #10 324 x 458 mm */
#define DMPAPER_P16K_ROTATED 106 /* PRC 16K Rotated */
#define DMPAPER_P32K_ROTATED 107 /* PRC 32K Rotated */
#define DMPAPER_P32KBIG_ROTATED 108 /* PRC 32K(Big) Rotated */
#define DMPAPER_PENV_1_ROTATED 109 /* PRC Envelope #1 Rotated 165 x 102 mm */
#define DMPAPER_PENV_2_ROTATED 110 /* PRC Envelope #2 Rotated 176 x 102 mm */
#define DMPAPER_PENV_3_ROTATED 111 /* PRC Envelope #3 Rotated 176 x 125 mm */
#define DMPAPER_PENV_4_ROTATED 112 /* PRC Envelope #4 Rotated 208 x 110 mm */
#define DMPAPER_PENV_5_ROTATED 113 /* PRC Envelope #5 Rotated 220 x 110 mm */
#define DMPAPER_PENV_6_ROTATED 114 /* PRC Envelope #6 Rotated 230 x 120 mm */
#define DMPAPER_PENV_7_ROTATED 115 /* PRC Envelope #7 Rotated 230 x 160 mm */
#define DMPAPER_PENV_8_ROTATED 116 /* PRC Envelope #8 Rotated 309 x 120 mm */
#define DMPAPER_PENV_9_ROTATED 117 /* PRC Envelope #9 Rotated 324 x 229 mm */
#define DMPAPER_PENV_10_ROTATED 118 /* PRC Envelope #10 Rotated 458 x 324 mm */
#endif /* WINVER >= 0x0500 */

#if (WINVER >= 0x0500)
#define DMPAPER_LAST DMPAPER_PENV_10_ROTATED
#elif (WINVER >= 0x0400)
#define DMPAPER_LAST DMPAPER_A3_EXTRA_TRANSVERSE
#else
#define DMPAPER_LAST DMPAPER_FANFOLD_LGL_GERMAN
#endif

#define DMPAPER_USER 256