I wanted such a method because it would save some code (not really that important). Right now I have ten if statements (for buttons for the numbers 0 to 9) and each calls the same function with its keycode as an argument, that then adds the character to a string for output. It would be cool if all these if statements could be grouped together since they call the same thing.

To use this in Ndless 2.0:
static const unsigned get_event_addrs[] = {0x1016C354, 0x1016e36c, 0x101b2724, 0x101b2fec};  //OS 1.7 ,OS2.0.1.60
#define get_event SYSCALL_CUSTOM(get_event_addrs, int,  struct event *)


This code lets you use an OS function to get the key code. When you call it, it waits until a key gets pressed and then gives you the key code.
To use it you have to copy paste Goplat's code into your project and replace #ifdef to #endif with the two codelines bsl posted.