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Chapter 7 — Programming

CN2B Mobile Computer User’s Manual 187

Understanding Keypad Attributes

The keypad attributes are as follows.

• “OrangeObeyClear” = dword:0

• “OrangeOneShot” = dword:1

• “GreenObeyClear” = dword:0

• “GreenOneShot” = dword:0

• “MultimapTimeout” = dword:258 (see next section for a description)

When you press the Orange B key or Green C key, a timer starts and

will turn Orange or Green mode off after three seconds. To force Orange

or Green mode to stay active after the timer has expired (which is also called

“locking” the mode) you must set *ObeyClear to 0.

When you press a key in Orange or Green mode, the orange or green func-

tion for that key is produced and Orange or Green mode is turned off. To

force Orange or Green mode to stay active after a key has been pressed

(which is also called “locking” the mode) you must set *OneShot to 0.

Creating Multiple Key Definitions

In the case of multiple key definitions, the first byte is the number of possi-

ble keys (in words) that key physical key can cycle between. The second

byte must be 0x80 (this is what makes it a multi-key definition). The values

following should be two bytes for each possible key.

Multiple key definitions can also be used for FkeyCode and FkeyMeta

mappings. In multi-key mode, only one VK code can be emitted by the

key.

MultimapTimeout is the number of milliseconds you have to press the key

again before the current selection is emitted. The default is 258, which

equals 600ms (0.6 seconds).

To understand MultimapTimeout, consider the numeric keypad. When

you press the Green C key and the [2] key, you have selected the “a”

character. You have 0.6 seconds to press the [2] key again for “b.” If you do

Threshold crossed 0x42

Headset detected 0x43

Keypad Backlight 0x44

Ambient Light 0x44

Threshold Crossed 0x44

Keypad Scan Codes and Registry Entries (continued)

Press this Key Meaning Scan Code Registry Entry

1 2 ... 200 201 202 203 204 205 206 207 208 209 210 ... 263 264

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