This does a check of the device for a keypad and if one is available it returns true otherwise it returns false. Please note that this function is mainly for use with Android devices
For those users with a Sony Xperia Play, there is a set button/key map setup within GameMaker Studio 2, so you can use the keyboard constants vk_up, vk_down, vk_left, vk_right for the joypad keys and Triangle is ord("T"), Square is ord("S"), Circle is vk_alt + vk_backspace while the back button is simply vk_backspace, Cross is vk_space, Select is vk_return and Start is vk_rshift, the L Trigger is ord("L") and R Trigger is ord("R").
global.Setting = 2;
global.Setting = 1;
The above code checks for a keypad then changes a global variable depending on the returned value.