dmDeviceName
| Specifies the name of the device the driver supports (for example, PCL/HP LaserJet for PCL/HP LaserJet®). This string is unique among device drivers.
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dmSpecVersion
| Specifies the version number of the initialization data specification on which the structure is based.
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dmDriverVersion
| Specifies the printer driver version number assigned by the printer driver developer.
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dmSize
| Specifies the size, in bytes, of the DEVMODE structure except the dmDriverData (device-specific) member. If an application manipulates only the driver-independent portion of the data, it can use this member to determine the length of the structure without having to account for different versions.
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dmDriverExtra
| Contains the number of bytes of private driver-data that follow this structure. If a device driver does not use device-specific information, set this member to zero. See Remarks below.
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dmFields
| Specifies which of the remaining members in the DEVMODE structure have been initialized. Bit 0 (defined as DM_ORIENTATION) corresponds to dmOrientation; bit 1 (defined as DM_PAPERSIZE) specifies dmPaperSize, and so on. A printer driver supports only those members that are appropriate for the printer technology.
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dmOrientation
| Selects the orientation of the paper. This member can be set to either of the following:
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| Constant
| Description
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| DMPAPER_LETTER
| Letter, 8 1/2 by 11 inches
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| DMPAPER_LEGAL
| Legal, 8 1/2 by 14 inches
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| DMPAPER_A4 A4
| Sheet, 210 by 297 millimeters
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| DMPAPER_CSHEET
| C Sheet, 17 by 22 inches
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| DMPAPER_DSHEET
| D Sheet, 22 by 34 inches
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| DMPAPER_ESHEET
| E Sheet, 34 by 44 inches
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| DMPAPER_LETTERSMALL
| Letter Small, 8 1/2 by 11 inches
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| DMPAPER_TABLOID
| Tabloid, 11 by 17 inches
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| DMPAPER_LEDGER
| Ledger, 17 by 11 inches
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| DMPAPER_STATEMENT
| Statement, 5 1/2 by 8 1/2 inches
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| DMPAPER_EXECUTIVE
| Executive, 7 1/4 by 10 1/2 inches
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| DMPAPER_A3
| A3 sheet, 297 by 420 millimeters
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| DMPAPER_A4SMALL
| A4 small sheet, 210 by 297 millimeters
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| DMPAPER_A5
| A5 sheet, 148 by 210 millimeters
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| DMPAPER_B4
| B4 sheet, 250 by 354 millimeters
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| DMPAPER_B5
| B5 sheet, 182-by-257-millimeter paper
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| DMPAPER_FOLIO
| Folio, 8-1/2-by-13-inch paper
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| DMPAPER_QUARTO
| Quarto, 215-by-275-millimeter paper
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| DMPAPER_10X14
| 10-by-14-inch sheet
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| DMPAPER_11X17
| 11-by-17-inch sheet
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| DMPAPER_NOTE
| Note, 8 1/2 by 11 inches
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| DMPAPER_ENV_9
| #9 Envelope, 3 7/8 by 8 7/8 inches
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| DMPAPER_ENV_10
| #10 Envelope, 4 1/8 by 9 1/2 inches
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| DMPAPER_ENV_11
| #11 Envelope, 4 1/2 by 10 3/8 inches
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| DMPAPER_ENV_12
| #12 Envelope, 4 3/4 by 11 inches
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| DMPAPER_ENV_14
| #14 Envelope, 5 by 11 1/2 inches
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| DMPAPER_ENV_DL
| DL Envelope, 110 by 220 millimeters
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| DMPAPER_ENV_C5
| C5 Envelope, 162 by 229 millimeters
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| DMPAPER_ENV_C3
| C3 Envelope, 324 by 458 millimeters
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| DMPAPER_ENV_C4
| C4 Envelope, 229 by 324 millimeters
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| DMPAPER_ENV_C6
| C6 Envelope, 114 by 162 millimeters
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| DMPAPER_ENV_C65
| C65 Envelope, 114 by 229 millimeters
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| DMPAPER_ENV_B4
| B4 Envelope, 250 by 353 millimeters
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| DMPAPER_ENV_B5
| B5 Envelope, 176 by 250 millimeters
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| DMPAPER_ENV_B6
| B6 Envelope, 176 by 125 millimeters
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| DMPAPER_ENV_ITALY
| Italy Envelope, 110 by 230 millimeters
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| DMPAPER_ENV_ MONARCH
| Monarch Envelope, 3 7/8 by 7 1/2 inches
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| DMPAPER_ENV_ PERSONAL
| 6 3/4 Envelope, 3 5/8 by 6 1/2 inches
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| DMPAPER_FANFOLD_US
| US Std Fanfold, 14 7/8 by 11 inches
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| DMPAPER_FANFOLD_ STD_GERMAN
| German Std Fanfold, 8 1/2 by 12 inches
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| DMPA PER_FANFOLD_ LGL_GERMAN
| German Legal Fanfold, 8 1/2 by 13 inches
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dmPaperLength
| Overrides the length of the paper specified by the dmPaperSize member, either for custom paper sizes or for devices such as dot-matrix printers, which can print on a page of arbitrary length. These values, along with all other values in this structure that specify a physical length, are in tenths of a millimeter.
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dmPaperWidth
| Overrides the width of the paper specified by the dmPaperSize member.
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dmScale
| Specifies the factor by which the printed output is to be scaled. The apparent page size is scaled from the physical page size by a factor of dmScale/100. For example, a letter-sized page with a dmScale value of 50 would contain as much data as a page of 17 by 22 inches because the output text and graphics would be half their original height and width.
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dmCopies
| Selects the number of copies printed if the device supports multiple-page copies.
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dmDefaultSource
| Reserved. This member must be set to 0.
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dmPrintQuality
| Specifies the printer resolution. There are four predefined device-independent values. If a positive value is given, it specifies the number of dots per inch (DPI) and is therefore device dependent.
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dmFormName
| Specifies the name of the form to use; for example, Letter or Legal. A complete set of names can be retrieved through the Windows EnumForms function.
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dmUnusedPadding
| Used to align the structure to a DWORD boundary. This should not be used or referenced. Its name and usage is reserved, and can change in future releases.
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dmBitsPerPel
| Specifies in bits per pixel the color resolution of the display device. For example: 4 bits for 16 colors, 8 bits for 256 colors, or 16 bits for 65,536 colors.
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dmPelsWidth
| Specifies the width, in pixels, of the visible device surface.
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dmPelsHeight
| Specifies the height, in pixels, of the visible device surface.
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dmDisplayFlags
| Specifies the device's display mode. The following are valid flags:
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