Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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[io.device]
Filename,"Description","AspectRatio"[,"AspectRatio"...]
 
The [io.device] section specifies the files and information required to
install printer drivers.
 
Parameter    Description
────────────────────────────────────────────────────────────────────────────
 
Filename     Specifies the MS-DOS filename of the printer-driver file.
 
Description  Specifies an ASCII string that describes the printer driver.
             This string should match the description field in the driver's
             executable file. This parameter must be enclosed in double
             quotation marks (").
 
AspectRatio  Specifies the aspect ratio (relative dimensions) of the printer
             as well as the number of pixels-per-inch in both horizontal and
             vertical directions. This parameter must be enclosed in double
             quotation marks ("). This parameter can have one or the
             following form:
 
                 "AspectXY,LogPixelsX,LogPixelsY"
                 "DEVICESPECIFIC"
 
             The parameters AspectXY, LogPixelsX, and LogPixelsY are decimal
             values that are equal to the values of the dpAspectXY,
             dpLogPixelsX, and dpLogPixelsY members in the GDIINFO structure
             for the printer driver.
 
             Control Panel uses this information to determine which raster
             fonts to install for the device. Control Panel searches for
             matching fonts in the [sysfonts], [fixedfonts], [oemfonts], or
             [fonts] sections of the information file, then installs any
             matching fonts in the [fonts] section of the WIN.INI file.
 
             Up to five different aspect ratio values may be listed; at
             least one is required. The DEVICESPECIFIC keyword is used if no
             raster-font installation is desired.
 
Comments
 
Control Panel uses the Filename parameter to check whether the driver has
been previously installed.
 
Control Panel combines the Filename and Description parameters to create a
setting that it adds to the [devices] and [PrinterPorts] sections in the
WIN.INI file. The settings have the following form:
 
Description=Filename,Port[,Data]
 
If a portion of the Description parameter is enclosed in brackets ([]),
Control Panel uses that portion (instead of the Filename parameter) in the
WIN.INI file. In this case, the text in the brackets is typically the
generic name for a driver that supports many printer models.
 
Example
 
The following is an example of an OEMSETUP.INF file for the XYZ laser and
ink-jet printers:
 
[disks]
1 = . ,"XYZ Printers Disk"
 
[io.device]
1:XYZLASER.DRV,"XYZ Laser Printer","DEVICESPECIFIC"
1:XYZINK.DRV,"XYZ Ink Jet Printer [XYZ Series]","100,120,120","100,96,96"
 
[io.dependent]
XYZLASER.DRV=1:XYZLASER.HLP,1:SFXYZ.DLL
 
If the driver is not found in the current drive, Control Panel prompts the
user for the specified disk. After Control Panel installs the driver, it
updates the WIN.INI file as follows:
 
[printerports]
XYZ Series=XYZINK,LPT1:,15,45
XYZ Laser Printer=XYZLASER,LPT2:,15,45
 
[devices]
XYZ Series=XYZINK,LPT1:
XYZ Laser Printer=XYZLASER,LPT2:
 
See Also
 
[disks], [io.dependent]
 
 
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