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Raster data emission commands

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Important

We recommend that you use Microsoft's IPP inbox class driver, along with Print Support Apps (PSA), to customize the print experience in Windows 10 and 11 for printer device development.

For more information, see the Print support app design guide.

The following table lists the raster data emission commands. All commands are specified using the command entry format.

Command Description Comments
CmdBeginRaster Command to initialize a raster data transfer. Optional. If not specified, Unidrv assumes no initialization is needed.
CmdEndRaster Command to complete a raster data transfer. Optional. If not specified, Unidrv assumes no transfer-completion operations are needed.
CmdSetDestBmpHeight Command to set the height of a destination bitmap. Optional. Applicable only if the printer supports scalable bitmaps.
CmdSetDestBmpWidth Command to set the width of a destination bitmap. Optional. Applicable only if the printer supports scalable bitmaps.
CmdSetSrcBmpHeight Command to set the height of a source bitmap. Optional. Applicable only if the printer supports scalable bitmaps.
CmdSetSrcBmpWidth Command to set the width of a source bitmap. Optional. Applicable only if the printer supports scalable bitmaps.
CmdSendBlockData Command to deliver a block of data to the printer. Required. If OutputDataFormat is V_BYTE, a block contains the data for one physical pass of the print head (see PinsPerPhysPass). If *OutputDataFormat is H_BYTE, a block contains the data for one logical pass of the print head (see PinsPerLogPass).
CmdEndBlockData Command to indicate the end of a block of data that was sent using the CmdSendBlockData command. Optional. If not specified, Unidrv assumes no command is needed to indicate the end of a block (used by some dot-matrix printers)
CmdSendBlackData Command to deliver black plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendBlueData Command to deliver blue plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendCyanData Command to deliver cyan plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendGreenData Command to deliver green plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendMagentaData Command to deliver magenta plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendRedData Command to deliver red plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.
CmdSendYellowData Command to deliver yellow plane data to the printer. Required if UseExpColorSelectCmd? attribute is FALSE.

For GPD examples, see Sample GPD files.