7 replies to this topic

[Crusable]

Hello, I am having some weird problems with my Image handling class. The code here I copied from my previous project and it worked there so I am unsure of the problem. 

 

Imagehandler.h 

 

 
//This class handlers loading, optimizing, colour keying, and blitting images
 
#ifndef IMAGE_HANDLER_H
#define IMAGE_HANDLER_H
 
#include "SDL.h"
#include "SDL_image.h"
#include <string>
 
class ImageHandler{
 
public:
    SDL_Surface* LoadImage(std::string Filename);
    void BlitImage(int x, int y, SDL_Surface* Image, SDL_Surface* Destination, SDL_Rect* SpriteClip);
 
private:
    SDL_Rect mOffset;
    Uint32 mColourKey;
    SDL_Surface* mLoadedImage;
    SDL_Surface* mOpdImage;
};
 
#endif //IMAGE_HANDLER_H

 

Imagehandler.cpp

 

 

 
 
#include "ImageHandler.h"
 
SDL_Surface* ImageHandler::LoadImage(std::string Filename){
    
    mLoadedImage = IMG_Load(Filename.c_str());
    mOpdImage = NULL;
    
    if(mLoadedImage != NULL){
 
        mOpdImage = SDL_DisplayFormat(mLoadedImage);
        SDL_FreeSurface(mLoadedImage);
 
    } else return NULL;
 
    if(mOpdImage != NULL){
 
        mColourKey = SDL_MapRGB(mOpdImage->format, 255, 0, 255);
        SDL_SetColorKey(mOpdImage, SDL_SRCCOLORKEY, mColourKey);
    }
    
    return mOpdImage;
}
 

The program throws an excpetion here

mOpdImage = SDL_DisplayFormat(mLoadedImage);

 

Thank you for any help.

Edited by Mathew Bergen, 02 March 2013 - 11:56 PM.

[Crusable]

Sorry for posting three posts I had internet issues.

[blueshogun96]

The server was acting strange a while ago, that might have caused the double post...

 

Is IMG_Load part of SDL?  If not, can you share the source for that function?  Also, what's the exception message you're getting (assuming you're using visual studio)?

 

Shogun.

[Dennisvb]

What exception for you get?

[ultramailman]

Are you linking with the SDL_image library? IMG_Load is from there so you need to link with it.

[Crusable]

Is IMG_Load part of SDL?

 

 

 IMG_Load is from SDL_Image;

 

Are you linking with the SDL_image library?

 

Yes it is all linked properly

 

What exception for you get?

 

Unhandled exception at 0x6812591F (SDL.dll) in Space Invaders Clone.exe: 0xC0000005: Access violation reading location 0x0000013C.

That is the exact message.

Edited by Mathew Bergen, 03 March 2013 - 01:43 AM.

[ultramailman]

Please read the section titled "Newbie Hint" of this page: http://sdl.beuc.net/sdl.wiki/SDL_DisplayFormat, maybe it explains the cause to your problem.

Edited by ultramailman, 03 March 2013 - 02:12 AM.

[Crusable]

Ah thanks. I have a repository with all the files loaded load before that thanks