hi!

i´m tutoring in a cad programm and want to build a little helper for me. its just a little visual thing showing which mouse button is pressed, and if shift, alt or control is pressed too because this is a question i hear about thousand  times....

is this the wright way?

first thing and easy: a rect is displayed according to the mouse button;

next i just wanna write "shift" if shift is pressed, and nothing if it is released (and so on with alt and control), but i don´t get it. how could i do that?

PFont blender;

void setup()
{
 size(200, 300);
 background(100);


}


int a;
int b;
int control;
int alt;
String s;
int c;


void draw()
{
 if (mousePressed && (mouseButton == LEFT)) {
   a = 255;
   b = 20;
   }
     else if (mousePressed && (mouseButton == CENTER)) {
       a = 255;
       b = 75;
       }
         else if (mousePressed && (mouseButton == RIGHT)) {
           a = 255;
           b = 130;
           }
     else
       { a = 0; }

         noStroke();
         rect (b,25,40,50);
         fill (a);

}

void keyPressed ()

{
   

              if (keyPressed && (keyCode == SHIFT))
              { s = " # pressed shift # "; c = 255; }
             
/*                 else if (keyCode == CONTROL) {
                   control = 255;
                     }
                     else if (keyCode == ALT) {
                       alt = 255;
                        }
*/                
                          else
                          { s = " #nothing# "; c = 0; }
                 
/*                  blender = loadFont("BlenderBook24.vlw");
                 textFont (blender, 48);
                 text (s, 10, 200 );
                 fill (c);
*/

                 print (s);



thx