DEVMODE
A version of this page is also available for
4/8/2010
This structure contains information about a printer environment and device initialization.
Syntax
typedef struct_devicemode {
WCHAR dmDeviceName[CCHDEVICENAME];
WORD dmSpecVersion;
WORD dmDriverVersion;
WORD dmSize;
WORD dmDriverExtra;
DWORD dmFields;
short dmOrientation;
short dmPaperSize;
short dmPaperLength;
short dmPaperWidth;
short dmScale;
short dmCopies;
short dmDefaultSource;
short dmPrintQuality;
short dmColor;
short dmDuplex;
short dmYResolution;
short dmTTOption;
short dmCollate;
BCHAR dmFormName[CCHFORMNAME];
WORD dmLogPixels;
DWORD dmBitsPerPel;
DWORD dmPelsWidth;
DWORD dmPelsHeight;
DWORD dmDisplayFlags;
DWORD dmDisplayFrequency;
DWORD dmDisplayOrientation;
} DEVMODE;
Members
dmDeviceName
String that specifies the friendly name of the printer.This string is unique among device drivers.
This name can be truncated to fit in the dmDeviceName array.
- dmSpecVersion
Unsupported; set to zero.
- dmDriverVersion
Unsupported; set to zero.
dmSize
WORD that specifies the size, in bytes, of the DEVMODE structure, not including any private driver-specific data that can follow the public members of the structure.Set this member to sizeof(DEVMODE) to indicate the version of the DEVMODE structure being used.
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.
dmFields
DWORD that specifies whether certain members of the DEVMODE structure have been initialized.If a member is initialized, its corresponding bit is set, otherwise the bit is clear.
A printer driver supports only those member of the DEVMODE structure that are appropriate for the printer technology.
The following table shows the possible values.
Value Description DM_ORIENTATION
The dmOrientation member is initialized.
DM_PAPERSIZE
The dmPaperSize member is initialized.
DM_COPIES
The dmCopies member is initialized.
DM_PRINTQUALITY
The dmPrintQuality member is initialized.
DM_COLOR
The dmColor member is initialized.
DM_BITSPERPEL
The dmBitsPerPel member is initialized.
DM_PELSWIDTH
The dmPelsWidth member is initialized.
DM_PELSHEIGHT
The dmPelsHeight member is initialized.
DM_DISPLAYORIENTATION
The ChangeDisplaySetttingsEx function should set or obtain the current screen orientation in the dmDisplayOrientation member.
DM_DISPLAYQUERYORIENTATION
The ChangeDisplaySetttingsEx function should query the display driver to determine whether it supports screen rotation.
dmOrientation
Short integer that specifies the orientation of the paper for printer devices.The following table shows the possible values.
Value Description DMORIENT_LANDSCAPE
Prints in landscape orientation.
DMORIENT_PORTRAIT
Prints in portrait orientation.
dmPaperSize
Short integer that specifies the size of the paper for printer devices.This following table shows the possible predefined values.
Value Description DMPAPER_A4
A4 sheet, 210 millimeters by 297 millimeters
DMPAPER_B4
B4 sheet, 250 millimeters by 354 millimeters
DMPAPER_B5
B5 sheet, 182 millimeters by 257 millimeters
DMPAPER_LEGAL
Legal, 8 1/2 inches by 14 inches
DMPAPER_LETTER
Letter, 8 1/2 inches by 11 inches
- dmPaperLength
Unsupported; set to zero.
- dmPaperWidth
Unsupported; set to zero.
- dmScale
Unsupported; set to zero.
- dmCopies
Short integer that specifies the number of copies that you want to print, if the device supports printing multiple copies.
- dmDefaultSource
Unsupported; set to zero.
dmPrintQuality
Short integer that specifies the printer resolution.The following table shows the possible predefined device-independent values.
Value Description DMRES_DRAFT
Draft quality
DMRES_HIGH
High quality
dmColor
Short integer that specifies color or monochrome printing on color printers.The following table shows the possible values.
Value Description DMCOLOR_COLOR
Color printing
DMCOLOR_MONOCHROME
Monochrome printing
- dmDuplex
Unsupported; set to zero.
- dmYResolution
Unsupported; set to zero.
- dmTTOption
Unsupported; set to zero.
- dmCollate
Unsupported; set to zero.
- dmFormName
Unsupported; set to zero.
- dmLogPixels
Unsupported; set to zero.
dmBitsPerPel
DWORD that specifies the color resolution, in bits per pixel, of the display device; for example, 4 bits for 16 colors, 8 bits for 256 colors, or 16 bits for 65,536 colors.Display drivers use this member, but printer drivers do not.
dmPelsWidth
DWORD that specifies the width, in pixels, of the visible device surface.Display drivers use this member, but printer drivers do not.
dmPelsHeight
DWORD that specifies the height, in pixels, of the visible device surface.Display drivers use this member, but printer drivers do not.
- dmDisplayFlags
Unsupported; set to zero.
- dmDisplayFrequency
Unsupported; set to zero.
dmDisplayOrientation
DWORD that specifies the orientation of the screen.The following table shows the possible values.
Value Description DMDO_0
The screen is rotated by 0 degrees.
DMDO_90
The screen is rotated by 90 degrees counterclockwise.
DMDO_180
The screen is rotated by 180 degrees.
DMDO_270
The screen is rotated by 270 degrees counterclockwise.
Remarks
The private data for a device driver follows the public portion of the DEVMODE structure.
The size of the public data can vary for different versions of the structure.
The dmSize member specifies the number of bytes of public data.
You should initialize all unsupported members with a value of zero.
Requirements
| Header | windows.h |
| Windows Embedded CE | Windows CE 2.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |