selectOutput feature

Processing Coding Questions
3

Dear all,
I developed a very simple sketch in which I use the selectOutput function.
It works but, as soon as the select output file window is open, the sketch graphic disappear and the desktop is shown.
Did you have any similar problem ? How did you fix it ?
Thank you very much for your help and cooperation
regards

This is the source code of TestFile.pde

PImage myImage;
cButton myButton;


void setup()
{
  fullScreen(P2D, 2);
  myImage=loadImage("img.jpg");
  myButton=new cButton("","button",(displayWidth-myImage.width)/2,(displayHeight-myImage.height)/2,100);
}

void draw()
{
   image(myImage,(displayWidth-myImage.width)/2,(displayHeight-myImage.height)/2);
   myButton.drawBottone();
   int x = myButton.testMouse();
   if(x>=0) {
     selectOutput("Select a file to write to:", "fileSelected");
   }
}

void fileSelected(File selection) {
  if (selection == null) {
    println("Window was closed or the user hit cancel.");
  } else {
    println("User selected " + selection.getAbsolutePath());
  }
}

This is the source code of cButton class buttonClass.pde file:


    final static String RELEASED
            = "Released";
    final static String OVER
            = "Over";
    final static String PRESSED
            = "Pressed";

    class cButton {

        PImage released;
        PImage over;
        PImage pressed;
        int status;
        int left;
        int right;
        int top;
        int bottom;
        int x;
        int y;
        int mouseStatus;
        float res;
        int sx;
        int sy;

        cButton(String path, String name, int lx, int ly, int resize) {
            released = loadImage(path + name + RELEASED + ".png");
            over = loadImage(path + name + OVER + ".png");
            pressed = loadImage(path + name + PRESSED + ".png");
            status = 0;
            x = lx;
            y = ly;
            res = (float) resize;
            sx = (int) ((float) released.width * (res / 100));
            sy = (int) ((float) released.height * (res / 100));
            right = x + sx;
            bottom = y + sy;
            top = y;
            left = x;

            mouseStatus = 0;
        }

        int mouse() {
            int x = testMouse();
            drawBottone();
            return x;
        }

        public void drawBottone() {
            switch (status) {
                case 0: // released
                    image(released, x, y, sx, sy);
                    break;
                case 1: // over
                    image(over, x, y, sx, sy);
                    break;
                case 2: // pressed
                    image(pressed, x, y, sx, sy);
                    break;
            }
        }

        public void drawBottone(int x, int y) {
            switch (status) {
                case 0: // released
                    image(released, x, y, sx, sy);
                    break;
                case 1: // over
                    image(over, x, y, sx, sy);
                    break;
                case 2: // pressed
                    image(pressed, x, y, sx, sy);
                    break;
            }
        }

        public int testMouse() {
            int flg;
            int ret;
            flg = 0;
            ret = -1;
            // println("X: "+mouseX+" Y: "+mouseY);
            if (mouseX >= left && mouseX <= right) {
                if (mouseY >= top && mouseY <= bottom) {
                    if (mousePressed == true && mouseButton == LEFT) {
                        flg = 2;
                         ret = 1;

                    } else {
                        flg = 1;
                    }
                }
            }
            
            status = flg;
            if(ret==1) {
              if( mouseStatus<0) {
                mouseStatus=ret;
              } else
                ret=-1;
            }else
              mouseStatus=ret;
            // println(ret);
            return ret;
        }
    }