Thread: class hirarchy - using SDL Library

lo guys, i just started "playing" with SDL Library (dont ask me why, cuz i cant give you a decent answer-> its open source, seemed easy, and i need to work a bit more with GUI)

anywayz,

how can i make a class container that contains some other classes (widgets - windows) - ( these widgets contain some buttons that call my other functions - i have to send/receive data to/from IO serial COM - where my micro-controler is connected to )

so i ll have to make class hirarchy where the class cointainer will contain classes widgets (new window, send, receive, quit, and so on)

to make it a bit easier to understand my question, here is the code how to make new widget with a button

Code:

make_widgets.cpp
 /*
 *  The application processes only the event SDL_QUIT.
 *  The WidgetClass processes the SDL_EXPOSE event via
 *  the OnPaint() member function.
 * 
 */


#include "widget.h"   // Here is where the widgets are declared
#include "button.h"
#include "canvas.h"
#include <iostream>
using namespace std;

class Container:public Canvas
{

};

class Label:public Widget
{
public:
	Label(Object* Parent=NULL, int x=0, int y=0, int w=320, int h=120):Widget(Parent, x,y,w,h)
	{
		setCaption("Label");
		cout <<"Constructor Label is called !!!"<< endl;
	}
};

class Btn : public Button
{

public:
	Btn(Object* Parent=NULL, int x=0, int y=0, int w=0, int h=0);

	virtual void clicked()
	{
		cout << "Virtual void clicked() is called" << endl;
		exit(0);
	}
};

Btn::Btn(Object* Parent, int x, int y, int w, int h):Button(Parent, x,y,w,h)
{
	setCaption("YES");
	cout <<"Constructor Btn is called !!!"<< endl;
}




int main()
{
	SDL_Event event;    // A structure containing event information
	Label MainWindow;  // Create the MainWindow.
	Btn QuitButtonYes(&MainWindow, 0,0,80,25);


	// Set the background color of the window
	MainWindow.setBgColorRGB(192,192,192); // The color is red=255, 
	                                     // blue = 0, and green = 0
	QuitButtonYes.setBgColorRGB(192,192,192);

	
	
	bool done = false;  // Flag showing whether we have to quit


	while ( SDL_WaitEvent(&event) && !done) {
		switch (event.type) {
			case SDL_QUIT:
				done = true;
				break;
			default:
				MainWindow.handleEvent(event);
				QuitButtonYes.handleEvent(event);
			break;
		}
		
	}/*while*/

	return 0;
}