Sorting out and testing our display position command.
To avoid refresh artefact we will indeed need to use this feature.
It will go like that:
   * Setup off screen buffer
   * Swap frame buffer
     1 ###########################################
 
     2 # Simple Makefile for HIDAPI test program
 
     7 ###########################################
 
    15 OBJS=$(COBJS) $(CPPOBJS)
 
    16 CFLAGS=-I../hidapi -I/usr/local/include `fox-config --cflags` -Wall -g -c
 
    17 LDFLAGS= -L/usr/local/lib
 
    18 LIBS= -lusb -liconv `fox-config --libs` -pthread
 
    22 	$(CXX) -Wall -g $^ $(LDFLAGS) -o $@ $(LIBS)
 
    25 	$(CC) $(CFLAGS) $< -o $@
 
    27 $(CPPOBJS): %.o: %.cpp
 
    28 	$(CXX) $(CFLAGS) $< -o $@