UBI EasyCoder 201 IISA Manuál s instrukcemi stáhnout pdf (Strana 143)

142

Intermec Fingerprint 6.13 – Programmer's Guide

2. Display, cont'd.

15. PRINTER FUNCTION CONTROL, cont'd.

Cursor Control

The cursor control instructions can be used for four purposes:

• To clear the display from messages (as an alternative to the double

PRINT# statement on line 20 in the example above).

• To enable or disable the cursor.

• To select cursor type (underscore or block/blink)

• To place the cursor at a specified position or to move it.

The cursor is either a black line under a character position in the

display, or a blinking block that intermittently blacks out the

character position:

Each cursor control command should start with the character CSI

(Control Sequence Introducer) = ASCII 155 decimal, or (in case of

7-bit communication) with the characters “ESC” + “[” (ASCII 27

+ 91 decimal).

Clearing the Display

Syntax: <CSI> + <<0|1|2>J>

where: CSI = ASCII 155 dec.

0 = From active position to end, inclusive (default)

1 = From start to active position, inclusive

2 = All of the display

J = Must always append the string

Example (clears all of the display):

10 OPEN "console:" FOR OUTPUT AS 1

20 PRINT#1, CHR$(155) + "2J";

Selecting Cursor Type

Syntax: <CSI> + <4p|5p>

where: CSI = ASCII 155 dec.

4p = Underscore

5p = Block/Blink (default)

Example (selects underscore-type cursor):

10 OPEN "console:" FOR OUTPUT AS 1

20 PRINT#1, CHR$(155) + "4p";

Continued!

Cursor

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UBI EasyCoder 201 IISA Manuál s instrukcemi Strana 143