Documentation | InterfaceKit | key_info
DESCRIPTION
Exposes the C++ key_info struct as a
native map.
FIELDS
modifiers
An integer conatining a bitmask that can be tested against the modifier key constants.
key_states
A 16-byte chunk of raw data.
Each key on the keyboard has a unique integer code that identifies it. So the
A key (for example) always has the same value no matter where it is
physically located on a particular keyboard. The left and right shift keys
have different key codes.
Each bit in the key_states data represents a key. If the bit is 1, the
key is down. If the bit is 0, the key is up. However, lock keys are set to
1 if the lock is on and 0 if the lock is off.
The bits in the data are read from left to right. The very first bit (index
0) does not represent a key. The next bit (index 1) represents the
Escape key.
See https://api.haiku-os.org/keyboard.html for a mapping of the key codes to the locations on a standard US keyboard.
The Be Book also lists a few other key codes:
0x69euro sign0x6akeypad=0x6bMac power key0x7eSystem Request0x7fBreak