SDL_Surface *load_image(std::string filename)

{

    //The image that's loaded

    SDL_Surface *loadedImage = NULL;

    //The optimized image that will be used

    SDL_Surface *optimizedImage = NULL;

    //Loaded the image using SDL_image

    loadedImage = IMG_Load(filename.c_str());

    //If the image loaded

    if(loadedImage != NULL)

    {

        //Create an optimized image

        optimizedImage = SDL_DisplayFormat(loadedImage);

        //Free the old image

        SDL_FreeSurface(loadedImage);

    }

    //Return the optimized image

    return optimizedImage;

}

#include "SDL.h"

#include "SDL_image.h"

#include <string>

//The  attributes of the screen

const int SCREEN_WIDTH = 600;

const int SCREEN_HEIGHT = 450;

const int SCREEN_BPP = 32;

//The surfaces that will be usede

SDL_Surface *message = NULL;

SDL_Surface *background = NULL;

SDL_Surface *screen = NULL;                  

SDL_Surface *load_image(std::string filename)

{

    //The image that's loaded

    SDL_Surface *loadedImage = NULL;

    //The optimized image that will be used

    SDL_Surface *optimizedImage = NULL;

    //Loaded the image using SDL_image

//    loadedImage = SDL_LoadBMP(filename.c_str());

    loadedImage = IMG_Load(filename.c_str());

    //If the image loaded

    if(loadedImage != NULL)

    {

        //Create an optimized image

        optimizedImage = SDL_DisplayFormat(loadedImage);

        //Free the old image

        SDL_FreeSurface(loadedImage);

    }

    //Return the optimized image

    return optimizedImage;

}

void apply_surface(int x,int y,SDL_Surface* source,SDL_Surface *destination)

{

    //Make a temporary rectangle to hold the offsets

    SDL_Rect offset;

    //Give the offset to the rectangle

    offset.x = x;

    offset.y = y;

    //Blit the surface

    SDL_BlitSurface(source,NULL,destination,&offset);

}

int main(int argc,char *argv[])

{

    //Initialize all SDL_subsystems

    if(SDL_Init(SDL_INIT_EVERYTHING) == -1)

    {

        return 1;

    }

    //Set up Screen

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

    if(screen == NULL)

    {

        return 1;

    }

    //Set the window caption

    SDL_WM_SetCaption("Hello World",NULL);

    //Load Image

    message = load_image("test_png.png");

    background = load_image("background.bmp");

    //Apply  the background  to the screen

    apply_surface(0,0,background,screen);

    //apply the message to the screen

    apply_surface(105,78,message,screen);

    //Update Screen

    if(SDL_Flip(screen) == -1)

    {

        return 1;

    }

    //Wait 2 seconds

    SDL_Delay(20000);

    //Free the loaded image

    SDL_FreeSurface(message);

    SDL_FreeSurface(background);

    //Quit SDL

    SDL_Quit();

    return 0;

}