// 20180519
I've created ButtonControler and we can not mouse-click but use keyboard select.
Please compile the below and push keyboard if you don mind.
https://github.com/WaitrudWeber/source_zip/blob/master/winmain-20180519.zip
Plese reffer to the below for compilation.
https://waitrudweber.hatenablog.com/entry/2018/05/01/005938
