Keyboard event handlers receive KeyboardState (see Section 4, “StdIOCommon” for definition) as a
parameter. When the special key (like F1, F2, PgUp, PgDn and
other) is pressed, then the KeyboardState contains a value of
SpecialKey
type. Here is a list of all
predefined values:
backSpaceKey, beginKey, clearKey, deleteKey, downKey, endKey, enterKey, escapeKey, f1Key, f2Key, f3Key, f4Key, f5Key, f6Key, f7Key, f8Key, f9Key, f10Key, f11Key, f12Key, f13Key, f14Key, f15Key, helpKey, leftKey, pgDownKey, pgUpKey, rightKey, upKey :: SpecialKey