Bolymin BETA903A, User Manual, Page: 93 / 95

BETA903A USER MANUAL - 93 -
4.6.4. Keypad control
The keypad of BETA903A supports 8 user-defined buttons. The buttons of keypad of BETA903A
will map to
F11~F18 of keyboard. To learn which button of keypad is pressed, you may catch
WM_KEYDOWN or WM_KEYUP message in your program and add the process codes. Here is
a step guide:
STEP 1: Override PreTranslateMessage () function of the window which will catch key message,
as shown below:
STEP 2: In Class view of eVC 4.0, click right button of mouse on the window that will catch the
key message. Select “ Add Windows Message Handler… ” and then select WM_KEYDOWN or
WM_KEYUP message.