Keycode mapping

i am making a game using coco editor , but in cocos editor there is no such keycode for red, green, blue or yellow button , even i mapped the keycode (403,404,405 so on ) it is not listening , but when i create in simple basic app it is listening. I want to know how these keycode is mapping as in ASCII or standard keycode is upto 255. so how it is mapping ?

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