Raster data emission commands
Important
The modern print platform is Windows' preferred means of communicating with printers. 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 Modern print platform and 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. |