Disable ofxMSAInteractiveObject?

@Raiuc wrote:

I'm using ofxMSAInteractiveObject from @memo in oF 0.9.8
I have several instances of ofxMSAInteractiveObject, each one with some button, logo, or arrow:

logo.load("myLogo.png");
logoGUI.content = &logo;
logoGUI.set(100, 100, 400, 250);

The program changes what is drawn according to an int global variable called state, but I don't know how to deactivate instances of ofxMSAInteractiveObject in each state, because once I set an instance it's drawn forever in the app.
In fact, once the object is set and an image is assigned, the object is drawn into the app, but I don't even call its draw() method! I don't know how to prevent the program to draw it.

What I'm doing now is to call a method to set the content of unused objects to NULL in each state and set their coordinates to zero as well as the width and height; but this is not elegant, it's a lot of code, I need to create dozens of states; I'm sure there's another easier way.

This is the class for my buttons:

#pragma once

#include "ofxMSAInteractiveObject.h"

class interactiveUI : public ofxMSAInteractiveObject {
public:
    ofBaseDraws *content;

    interactiveUI() {
	    content = NULL;
    }

void setup() {
	enableMouseEvents();
	enableKeyEvents();
}

void exit() {
}

void update() {

}

void draw() {

    if(content) {
		width = content->getWidth();
		height = content->getHeight();
		content->draw(x, y, width, height);

		// add a border if mouse is pressed or over the object
		if(isMousePressed()) {
			ofNoFill();
			ofDrawRectangle(x, y, width, height);
		} else if(isMouseOver()){
			ofNoFill();
			ofDrawRectangle(x, y, width, height);
		}
	}
}
};

Any hint will be appreciated.
Thank you.

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