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opening png image
Berkay


Joined: 21 Nov 2015
Posts: 2
hi, ı've found this codes from lazyfoo, ı try to open png image ı can compile correctly but when ı click to debug in Visual studio 2012 it gives "image loaded error", ı compiled and set everything for #include "SDL_image.h" from project -> properties what else should ı do?

Code:



#include "SDL.h"
#include "SDL_image.h"
#include <string>
#include <stdio.h>

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

//The surfaces
SDL_Surface *image = 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;

    //Load 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;
}

void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination )
{
    //Rectangle to hold the offsets
    SDL_Rect offset;

    //Get offsets
    offset.x = x;
    offset.y = y;

    //Blit the surface
    SDL_BlitSurface( source, NULL, destination, &offset );
}

bool init()
{
    //Initialize all SDL subsystems
    if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
    {
        return false;
    }

    //Set up the screen
    screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );

    //If there was an error in setting up the screen
    if( screen == NULL )
    {
        return false;
    }

    //Set the window caption
    SDL_WM_SetCaption( "PNG test", NULL );

    //If everything initialized fine
    return true;
}

void clean_up()
{
    //Free the surface
    SDL_FreeSurface( image );

    //Quit SDL
    SDL_Quit();
}

int main( int argc, char* args[] )
{
    //Initialize
    if( init() == false )
    {
      printf("Ä°nit error\n");
        return 1;
    }

    //Load the image
    image = load_image( "look.png" );
    //If there was a problem in loading the image
    if( image == NULL )
    {
      printf("image loaded error\n");
        return 1;
    }

    //Apply the surface to the screen
    apply_surface( 0, 0, image, screen );

    //Update the screen
    if( SDL_Flip( screen ) == -1 )
    {
      printf("update error\n");
        return 1;
    }

    //Wait 2 seconds
    SDL_Delay( 2000 );

    //Free the surface and quit SDL
    clean_up();

    return 0;
}