Essaye ça :
// UTFT_Buttons_Demo_320x240 (C)2013 Henning Karlsen
// web: Electronics - Henning Karlsen
//
// A small demo to demonstrate the use of some of the
// functions of the UTFT_Buttons add-on library.
//
// This demo was made for modules with a screen resolution
// of 320x240 pixels, but should work on larger screens as
// well.
//
// This program requires both the UTFT and UTouch libraries
// in addition to the UTFT_Buttons add-on library.
//
#include <UTFT.h>
#include <UTouch.h>
#include <UTFT_Buttons.h>
// Declare which fonts we will be using
extern uint8_t SmallFont[];
extern uint8_t BigFont[];
extern uint8_t Dingbats1_XL[];
// Set up UTFT...
// Set the pins to the correct ones for your development board
// -----------------------------------------------------------
// Standard Arduino 2009/Uno/Leonardo shield : ,19,18,17,16
// Standard Arduino Mega/Due shield : ,38,39,40,41
// CTE TFT LCD/SD Shield for Arduino Due : ,25,26,27,28
// Standard chipKit Uno32/uC32 : ,34,35,36,37
// Standard chipKit Max32 : ,82,83,84,85
// AquaLEDSource All in One Super Screw Shield : ,82,83,84,85
//
// Remember to change the model parameter to suit your display module!
UTFT myGLCD(ITDB32S,38,39,40,41);
// Set up UTouch...
// Set the pins to the correct ones for your development board
// -----------------------------------------------------------
// Standard Arduino 2009/Uno/Leonardo shield : 15,10,14,9,8
// Standard Arduino Mega/Due shield : 6,5,4,3,2
// CTE TFT LCD/SD Shield for Arduino Due : 6,5,4,3,2
// Standard chipKit Uno32/uC32 : 20,21,22,23,24
// Standard chipKit Max32 : 62,63,64,65,66
// AquaLEDSource All in One Super Screw Shield : 62,63,64,65,66
UTouch myTouch(6,5,4,3,2);
// Finally we set up UTFT_Buttons 
UTFT_Buttons myButtons(&myGLCD, &myTouch);
void setup()
{
myGLCD.InitLCD();
myGLCD.clrScr();
myGLCD.setFont(SmallFont);
myTouch.InitTouch();
myTouch.setPrecision(PREC_MEDIUM);
myButtons.setTextFont(BigFont);
myButtons.setSymbolFont(Dingbats1_XL);
}
void loop()
{
int but1, but2, but3, but4, butX, butY, pressed_button;
boolean default_colors = true;
but1 = myButtons.addButton( 10, 20, 300, 30, "Button 1");
but2 = myButtons.addButton( 10, 60, 300, 30, "Button 2");
but3 = myButtons.addButton( 10, 100, 300, 30, "Button 3");
but4 = myButtons.addButton( 10, 140, 300, 30, "Button 4", BUTTON_DISABLED);
butX = myButtons.addButton(279, 199, 40, 40, "a", BUTTON_SYMBOL);
butY = myButtons.addButton( 0, 199, 100, 40, "I", BUTTON_SYMBOL | BUTTON_SYMBOL_REP_3X);
myButtons.drawButtons();
myGLCD.print("You pressed:", 110, 205);
myGLCD.setColor(VGA_BLACK);
myGLCD.setBackColor(VGA_WHITE);
myGLCD.print("None ", 110, 220);
while(1)
{
if (myTouch.dataAvailable() == true)
{
pressed_button = myButtons.checkButtons();
if (pressed_button==butX)
{
if (myButtons.buttonEnabled(but4))
myButtons.disableButton(but4, true);
else
myButtons.enableButton(but4, true);
}
else if (pressed_button==butY)
{
if (default_colors)
{
myButtons.setButtonColors(VGA_YELLOW, VGA_RED, VGA_YELLOW, VGA_BLUE, VGA_GRAY);
myButtons.relabelButton(butY, "_");
myButtons.drawButtons();
default_colors=false;
}
else
{
myButtons.setButtonColors(VGA_WHITE, VGA_GRAY, VGA_WHITE, VGA_RED, VGA_BLUE);
myButtons.relabelButton(butY, "I");
myButtons.drawButtons();
default_colors=true;
}
}
if (pressed_button==but1)
myGLCD.print("Button 1", 110, 220);
if (pressed_button==but2)
myGLCD.print("Button 2", 110, 220);
if (pressed_button==but3)
myGLCD.print("Button 3", 110, 220);
if (pressed_button==but4)
myGLCD.print("Button 4", 110, 220);
if (pressed_button==-1)
myGLCD.print("None ", 110, 220);
}
}
}