// 20180521
We must use WM_KEYDOWN and WM_KEYUP if we want to add the cotrols of arrows on keyboard to software keys.
You can use the below if you have comon sense.
I'm pleasure if you download the below.
https://github.com/WaitrudWeber/source_zip/blob/master/winmain-20180521.zip
Plese reffer to the below for compilation.
https://waitrudweber.hatenablog.com/entry/2018/05/01/005938
