SDL Problem Mouse buttons

[Assassin7257]

I try to make this program, where basically you have a box in the screen that says win or lose ? And once you click it win would show, but when I compile it in CodeBlock it runs but nothing shows.

heres the code

//The headers
#include"SDL/SDL.h"
#include"SDL/SDL_image.h"
#include<string>

//screen attributes
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const int SCREEN_BPP = 32;

//set clip sprite
const int question = 0;
const int winner = 1;
const int loser = 2;

//event structutre
SDL_Event event;

//SDl surfaces
SDL_Surface* image = NULL;
SDL_Surface* screen = NULL;

//the clip regions of the sprite
SDL_Rect clips [ 3 ];

class Button
{
    private:
    //The attributes of the button
    SDL_Rect box;

    //The part of the sprite being shown
    SDL_Rect* clip;

    public:
    //Initlize the variable
    Button(int x, int y, int w, int h);

    //Handle events and set the buttons sprite region
    void handle_events();

    //shows the button on the screen
    void show();
};

SDL_Surface* load_image( std::string filename )
{
    //temporary hold image
    SDL_Surface* loadedImage = NULL;

    //hold optimizedImage
    SDL_Surface* optimizedImage = NULL;

    //load image
    loadedImage = IMG_Load( filename.c_str() );

    //if no error
    if ( loadedImage != NULL )
    {
        //optimize Image
        optimizedImage = SDL_DisplayFormat ( loadedImage );

        //free up old surface
        SDL_FreeSurface ( loadedImage );

        //if no errors
        if ( optimizedImage != NULL )
        {
            //set color map
            SDL_SetColorKey(optimizedImage, SDL_SRCCOLORKEY, SDL_MapRGB(optimizedImage->format, 0xFF, 0xFF, 0xFF) );
        }
    }

    //if no errors
    return optimizedImage;
}

void apply_surface(int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip = NULL)
{
    //rect to hold offset
    SDL_Rect offset;

    //assign offset
    offset.x = x;
    offset.y = y;

    //blit
    SDL_BlitSurface(source, clip, destination, &offset);
}

bool init()
{
    //initilize
    if ( SDL_Init( SDL_INIT_EVERYTHING) ==  -1)
    {
        return false;
    }

    //set screen
    screen = SDL_SetVideoMode(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,SDL_SWSURFACE);

    //if no erors
    if (screen == NULL)
    {
        return false;
    }

    //set windows caption
    SDL_WM_SetCaption("Placing button else where", NULL);

    //if noo errors
    return true;
}

bool load_files()
{
    //load image
    image = load_image("button.png");

    //if there was an error
    if (image == NULL)
    {
        return false;
    }

    //if no errors
    return true;
}

void clean_up()
{
    //free up surface
    SDL_FreeSurface( image );

    //quit program
    SDL_Quit();
}

void set_clips()
{
    //clip the sheet
    clips[ question ].x = 0;
    clips[ question ].y = 0;
    clips[ question ].w = 320;
    clips[ question ].h = 240;

    clips[ winner ].x = 0;
    clips[ winner ].y = 240;
    clips[ winner ].w = 320;
    clips[ winner ].h = 240;

    clips [ loser ].x = 320;
    clips [ loser ].y = 0;
    clips [ loser ].w = 320;
    clips [ loser ].h = 240;
}

Button::Button( int x, int y, int w, int h)
{
    //set the buttons attributes
    box.x = x;
    box.y = y;
    box.w = w;
    box.h = h;

    //set the default sprite
    clip = &clips[ question ];
}

void Button::handle_events()
{
    //The mouse offsets
    int x = 0, y = 0;

    //If the mouse moved
    if( event.type == SDL_MOUSEMOTION )
    {
        //Get the mouse offsets
        x = event.motion.x;
        y = event.motion.y;

        //If the mouse is over the button
        if( ( x > box.x ) && ( x < box.x + box.w ) && ( y > box.y ) && ( y < box.y + box.h ) )
        {
            //Set the button sprite
            clip = &clips[ loser ];
        }
        //If not
        else
        {
            //Set the button sprite
            clip = &clips[ question ];
        }
    }

    //if a mouse button was pressed
    if( event.type == SDL_MOUSEBUTTONDOWN )
    {
        //if left mouse button was pressed
        if ( event.button.button == SDL_BUTTON_LEFT )
        {
            //get the mouse offset
            x = event.button.x;
            y = event.button.y;

            //if the mouse is over the button
            if (  (x > box.x) && (x < box.x + box.w ) && ( y > box.y) && (y < box.y + box.h ) )
            {
                //set the button sprite;
                clip = &clips[ winner ];
            }
        }
    }
}

void Button::show()
{
    //show the button sprite
    apply_surface( box.x, box.y, image, screen, clip);
}

int main( int argc, char* agrs[] )
{
    //quit flag
    bool quit = false;

    //initilize
    if ( init() == false )
    {
        return 1;
    }

    //load files
    if ( load_files() == false)
    {
        return 1;
    }

    //clip sprite sheet
    set_clips();

    //make myButton
    Button myButton ( 170, 120, 320, 240);

    //while the user hasn't quit
    while (quit == false)
    {
        //if theres events to handle
        if (SDL_PollEvent (&event) )
        {
            //handle buttons event
            myButton.handle_events();

            //if the user hasn't Xed out the program
            if (event.type == SDL_QUIT)
            {
                quit = true;
            }
        }

        //fill the screen whiete
        SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0xFF, 0xFF, 0xFF ) );

        //update the screen
        if (SDL_Flip (screen) == -1)
        {
            return 1;
        }
    }

    //clean up
    clean_up();

    //sdl quit
    SDL_Quit();
}

[strongdrink]

Could you get anything to show up without using an image? (a solid square)