#define DRIVERVERSION 0     /* 设备驱动版本               */

#define TECHNOLOGY    2     /* Device classification                    */

#define HORZSIZE      4     /* 可打印区域宽度，毫米          */

#define VERTSIZE      6     /* 可打印区域高度，毫米            */

#define HORZRES       8     /* 可打印区域宽度，像素               */

#define VERTRES       10    /* 可打印区域高度，像素               */

#define BITSPIXEL     12    /* 像素位深                */

#define PLANES        14    /* Number of planes                         */

#define NUMBRUSHES    16    /* Number of brushes the device has         */

#define NUMPENS       18    /* Number of pens the device has            */

#define NUMMARKERS    20    /* Number of markers the device has         */

#define NUMFONTS      22    /* Number of fonts the device has           */

#define NUMCOLORS     24    /* Number of colors the device supports     */

#define PDEVICESIZE   26    /* Size required for device descriptor      */

#define CURVECAPS     28    /* Curve capabilities                       */

#define LINECAPS      30    /* Line capabilities                        */

#define POLYGONALCAPS 32    /* Polygonal capabilities                   */

#define TEXTCAPS      34    /* Text capabilities                        */

#define CLIPCAPS      36    /* Clipping capabilities                    */

#define RASTERCAPS    38    /* Bitblt capabilities                      */

#define ASPECTX       40    /* Length of the X leg                      */

#define ASPECTY       42    /* Length of the Y leg                      */

#define ASPECTXY      44    /* 设备对角线长度，单位像素                */

#define LOGPIXELSX 88 /* 水平方向，每英寸像素数                */
  #define LOGPIXELSY 90 /* 垂直方向，每英寸像素数                 */

// Printing related DeviceCaps. These replace the appropriate Escapes

#define PHYSICALWIDTH 110 /* 设备物理宽度，像素 Physical Width in device units */
#define PHYSICALHEIGHT 111 /* 设备物理高度，像素 Physical Height in device units */
#define PHYSICALOFFSETX 112 /* 纸张可打印区域左边距，单位像素 Physical Printable Area x margin */
#define PHYSICALOFFSETY 113 /* 纸张可打印区域上边距，单位像素 Physical Printable Area y margin */
#define SCALINGFACTORX 114 /* Scaling factor x */
#define SCALINGFACTORY 115 /* Scaling factor y */