#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Output.H>

Fl_Window* myWindow;
Fl_Output* myOutputBox;
Fl_Widget* keyWidget;

class keyStrokes : public Fl_Widget
{
   public:
   keyStrokes();
   int handle(int event);
   virtual void draw() {;}
};

keyStrokes::keyStrokes() : Fl_Widget( 0, 0, 0, 0 ) {;} 

int keyStrokes::handle(int event) {

    // Need to respond to FOCUS events in order to handle keyboard
    if (event == FL_FOCUS)
  	     return 1;
    if (event == FL_UNFOCUS)
  	     return 1;
		 
    // Now define responses to KEY DOWN events
    if (event == FL_KEYBOARD) {
	    switch ( Fl::event_key() )
		{
           // Define all the responses separately
		   // Here just a simple response, but this is where
		   // you have to insert clever code or call to clever
		   // code that does the work you want
		   case 'y':
		      myOutputBox->value("yes");
			  return 1; // to indicate we used the key event
		   case 'n':
		      myOutputBox->value("no");
			  return 1; // to indicate we used the key event
		   case FL_Left:
		      myOutputBox->value("left");
			  return 1; // to indicate we used the key event
		   case FL_Right:
		      myOutputBox->value("right");
			  return 1; // to indicate we used the key event
		   case FL_Up:
		      myOutputBox->value("up");
			  return 1; // to indicate we used the key event
		   case FL_Down:
		      myOutputBox->value("down");
			  return 1; // to indicate we used the key event
	          }
    }

    // And we might also need to response to KEY release
    if (event == FL_KEYUP) {
            myOutputBox->value("keyup");
            return 1; // to indicate we used the key event
    }
	
    return 0;  // we had no interest in the event
}

int main() 
{
   myWindow = new Fl_Window( 300, 100, "FLTK Keypress" );
   keyWidget = new keyStrokes( );
   myOutputBox = new Fl_Output( 80, 30, 200, 30, "Press =" );

   myWindow->end();
   myWindow->show(); 
   return Fl::run();
}