Casio IT-2000D - Manual (Page 99)

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6.4 Keypad Driver/Hardware Window Manager
6.4.1 Function
The keypad driver (KEYPAD.EXE) is used to add the keypad function to the system. Application
programs can use the keypad by calling the keypad driver functions via the keypad library (refer to
Chapter 7.6.3 “Keypad Library”).
This keypad driver internally calls the hardware window manager that enables the use of the
hardware window. Therefore, the use of the keypad driver requires the residence of the hardware
window manager.
The keypad driver is also used by some utilities (refer to Chapter 8 “Utility”.) supported for this
terminal. Therefore, before executing an application program or utility that uses the keypad driver,
make it reside in the main memory.
The relationship between the keypad driver/hardware window manager and application programs is
shown by the following diagram.
Fig. 6.2
Application Program
Keypad Driver
Hardware Window Manager
Hardware Windows
PEN BIOS
Touch Panel