SDL Multiple Window - Quitting Issue

I am attempting to make a Windows program in SDL, which was going alright until I made it a dual-window project (using the SDL_CreateWindow () function, with the SDL_Window object).

Before I did that, the event loop in main () worked like so:

Code:

---

.
.
.
SDL_Event event;

    //While application is running
    while (!quit)
    {
        //Handle events on queue
        while (SDL_PollEvent (&event) != 0)
        {
            //User requests quit
            if( event.type == SDL_QUIT )
            { 

                quit = true;
            }
.
.
.

---

Which worked fine - when the user clicks the Close button of the one and only window the program quits properly. As soon as I added another window to the program, neither of the windows' Close buttons had any effect.

I can sort of see the issue here: now there are two windows I'm guessing I have to differentiate between events from one window and the other (and act accordingly) but this is where I come unstuck.

Can anyone please help me out with this?