addBackgroundColor method

Adds the specification of the background color to the command buffer.

The background color from the beginning till the end of the row specified in the text area can be changed.

Syntax

	addBackgroundColor(row, r, g, b);

Parameter

row

Value	Description
Integer value from 1 to 19	Changes the background color of the specified row.
EVEN_ROWS	Changes the background color of all even rows.
ODD_ROWS	Changes the background color of all odd rows.
ALL_ROWS	Changes the background color of all rows.

r

Value	Description
Integer value from 0 to 255	Specifies the red color value of the background color.

g

Value	Description
Integer value from 0 to 255	Specifies the green color value of the background color.

b

Value	Description
Integer value from 0 to 255	Specifies the blue color value of the background color.

Return value

Return value	Object type
Display object	Display

Exception

Return value	Object type
Parameter " ... " is invalid	Error

Supplementary explanation

The background color can be applied only to the text area.
Specify the r, g, b parameters in the RGB565 format.
Specify the setting value in all of the r, g, and b parameters.
To apply the background color to a plurality of rows, execute this API a plurality of times.
To individually specify the background color in a plurality of windows, define the window in setCurrentTextArea method before executing this API.
If the window is defined beforehand, the background color can be specified individually for each window.
By dividing the window at the position where the background color is to be changed, the background color can be changed in the middle of the row.

Quick Access

[Name]
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[Description]
[Notes]

Epson ePOS SDK includes patented or patent pending functions. The contents must not be disclosed to third parties.

Epson ePOS SDK for JavaScript

Introduction
help
ePOSDevice object
Common to device objects
- callEvent method
OtherPeripheral object
- send method
- onreceive event
Display object
Keyboard object
POSKeyboard object
- onkeypress event
MSR object
- ondata event
Printer object
HybridPrinter2 object
Scanner object
- ondata event
SimpleSerial object
- sendCommand
- oncommandreply event
GermanyFiscalElement object
- operate method
- ongfereceive event
DeviceHubTerminal object
- shutdown method
- restart method
CommBoxManager object
- openCommBox method
- closeCommBox method
CommBox object
ePosDeviceConfiguration object
- Constructor
- getRegisterdDevices method
Appendix
- Error Code List
  - Error Codes acquired in the Callback Parameter and Counteractions
  - Error Codes acquired in the Onreceive Event and Countermeasure
- Key code list
- List of Supported Objects
- List of Supported APIs
- Printer-specific Support Information
  - TM-m10
  - TM-m30
  - TM-m30II
  - TM-m30II-H
  - TM-m30II-NT
  - TM-m30II-S
  - TM-m30II-SL
  - TM-m30III
  - TM-m30III-H
  - TM-m50
  - TM-m50II
  - TM-m50II-H
  - TM-T20II
  - TM-T20III
  - TM-T82III
  - TM-T88VI
  - TM-T88VII
  - TM-L100
  - TM-T70
  - TM-T70II
  - TM-T88IV
  - TM-T88V
  - TM-U220
  - TM-U220II
  - TM-U330
  - TM-P20
  - TM-P20II
  - TM-P60II (Receipt)
  - TM-P60II (Peeler)
  - TM-P80
  - TM-P80II
  - TM-H6000V
  - TM-T20II-i
  - TM-T70-i
  - TM-T82II-i
  - TM-T83II-i
  - TM-T88V-i
  - TM-T88VI-iHUB
  - TM-U220-i
  - TM-U220IIB-i
  - TM-T70II-DT
  - TM-T70II-DT2
  - TM-T88V-DT
  - TM-T88VI-DT2
  - TM-H6000IV-DT
  - TM-T20
  - TM-T82II
  - TM-T83II
  - TM-T90
  - TM-L90
  - TM-H6000IV
- Usage restriction by firmware version