Can\'t get state of arrow keys

Dmytro_Komsheliuk · Post by **Dmytro_Komsheliuk** » Wed Dec 30, 2015 10:16 am

Hello,
I'm trying to get state of arrow keys by using function getKeyState() in WinCC OA v3.14

it works for letter keys, for example:
getKeyState('A');

or for mouse buttons:
getKeyState(MOUSE_LBUTTON);

but for arrow keys there is no result:
getKeyState(KEY_LEFT);
getKeyState(KEY_RIGHT);
getKeyState(KEY_UP);
and probably getKeyState(KEY_DOWN); (not tried it) not works.

Is this a bug, or maybe I'm doing something wrong?

Best Regards
Dmytro Komsheliuk

mkoller · Post by **mkoller** » Wed Dec 30, 2015 12:29 pm

It is a bug. Also please note that this function is currently only available on windows, so in portable code you should not use it.

Dmytro_Komsheliuk · Post by **Dmytro_Komsheliuk** » Wed Dec 30, 2015 12:35 pm

Thanks

hope it will be fixed in next version

mkoller · Post by **mkoller** » Wed Dec 30, 2015 2:55 pm

The bug are wrong key codes.
As a workaround, you can define your own constants and use the following values instead.
(Did not test them but these were the values before they were changed):
KEY_LEFT 37
KEY_UP 38
KEY_RIGHT 39
KEY_DOWN 40

Bugs / Problems