AT&T 6300 Programmer's Manual page 314

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(ControlKeys)

Syntax 2 of the Key statement defines keys

15 to 20 to allow you to trap any Ctrl-Key,

Shift-Key, or Super-Shift «ALT»-Key. These

are often referred to as "user-defined" keys.

CHR$( shift )

CHR$( scan_code )

is an integer expression in the range 15 to 20

is a numeric value corresponding to the following hex

values for the latched keys:

&H40 (Caps Lock is active)

urn Lock is active)

&H08 (Alt Key is pressed)

&H04 (CTRL Key is pressed)

&H01, &H02, &H03

Both the left and right

< SHIFT> keys can be

used, where values of &HOl, &H02, or &H03

(the sum of hex 01 and hex 02) denote a

< SHIFT> key.

You can add multiple shift states, such as

<CTRL> and <ALT> keys together, by

adding the associated shift state values.

is a decimal number in the range 1 to 83. It represents

the scan code (in decimal) of the key to be trapped. See

Appendix A for a complete table of scan codes and their

associated key positions.

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