ggiGetc, ggiKbhit - Convenience functions for simplistic keyboard input
int ggiGetc(ggi_visual_t vis);
int ggiKbhit(ggi_visual_t vis);
ggiGetc gets a character from the keyboard, and blocks if there is no
key immediately available.
ggiKbhit checks if a key has been hit on the keyboard. This does not
consume the key. It is used for easy porting of old DOS applications.
Important: Do not poll like this: do while( ! ggiKbhit(vis) );
On a multitasking OS you would be wasting a lot of resources
which could be available to other processes. If you want to
wait for a key, use the ggiGetc call.
ggiKbhit returns 0 if no key has been received yet, otherwise there is
a key to be consumed.
ggiGetc returns a Unicode character in canonical form.
For a more detailed definition of characters, see gii_key_event(3).