Epson TM-H6000IIIU Manuale di sviluppo - Pagina 17

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Returned value One of the following is returned and stored in the ResultCode

property.

Value

OPOS_SUCCESS

OPOS_E_CLOSED

OPOS_E_NOTCLAIMED

OPOS_E_DISABLED

OPOS_E_ILLEGAL

Other

Requirement

Open, Claim & Enable

4) CHK_DI_IMAGE_FILTER

Parameter

Command

pData

pString

Explanation

Specifies an area to become effective after reading.

Example:

When you use the area of X = 0, Y = 500, CX = 1000,

CY = 1500,

specify pString = "0, 500, 1000, 1500".

Here,

X is the X coordinate of the start of the specified area.

Y is the Y coordinate of the start of the specified area.

CX is the X coordinate of the end of the specified area.

CY is the Y coordinate of the end of the specified area.

The values specified here affect MapMode.

Use the area number in pData and null character string ("") in pString

to cancel the specified area. Specify "0" in pData to cancel all area.

When you set at least one effective reading area, images other than

the setting area is filled with white.

When you specify the effective reading area, you must set the size of

APPLICATION DEVELOPMENT GUIDE

Meaning

DirectIO succeeded.

The device is closed.

The device is not claimed.

The device is disabled.

Specifies

function.

The parameter is illegal.

Refer to the ResultCode item.

Explanation

CHK_DI_IMAGE_FILTER

Specifies an area number. The available value is 1 to 10.

Specifies an area to set.

CheckScanner

Version 3.00 Feb. 2019

command

number

without