wxWidgets 2.9.1 debugging features are always available by default
定义wxDEBUG_LEVEL=0 在 IMPLEMENT_APP() 代码前。
To see a world in a grain of sand.
And a heaven in a wild flower
Hold infinity in the palm of your hand.
And eternity in an hour
一花一世界
一沙一天堂
掌中握无限
霎那成永恒
