Example

void setup()
{
background(0,0,0);
stroke(255,255,255);
fill(0,0,255);
strokeWeight(4);
}

int pmouseX;

void loop()
{
gettouch();

if (mouseX != pmouseX)
{
background(0,0,0);
size(128,128);
stroke(255,255,255);
fill(0,0,255);
rect(mouseX-10,mouseY-10,4,2);
text((double)dispGetClipWidth(),mouseX,mouseY);
rect(mouseX-10,mouseY+10,2,4);
line(mouseX+20,mouseY-10,mouseX+50,mouseY-30);
ellipse(mouseX+20,mouseY+30,6,6);
pmouseX=mouseX;
}

}