[SDL] Getting Devc++ compile errors on SDL_BlitSurface (n00bie question)

[Brian Kropf]

  tile = SDL_LoadBMP("D:\Pyro\img\brick.bmp");

You have to make sure to escape the backslashes like this:

  tile = SDL_LoadBMP("D:\\Pyro\\img\\brick.bmp");

or this will usually work as well:

  tile = SDL_LoadBMP("D:/Pyro/img/brick.bmp");

otherwise it'll think you are trying to use the string escape sequence \P, \i, \b.

- brian



Ihateusernames wrote:

>Here is my code. The errors are all on SDL_Blitsurface, and they are:
>45 D:\Pyro\main.cpp:31 [Warning] unknown escape sequence '\P' 
>45 D:\Pyro\main.cpp:31 [Warning] unknown escape sequence '\i' 
> D:\Pyro\main.cpp In function `int SDL_main(int, char**)': 
>40 D:\Pyro\main.cpp cannot convert `SDL_Rect' to `SDL_Rect*' for argument `4'  
>to `int SDL_UpperBlit(SDL_Surface*, SDL_Rect*, SDL_Surface*, SDL_Rect*)' 
> D:\Pyro\Makefile.win [Build Error]  [main.o] Error 1 
>
>Can anyone please tell me what is wrong?
>
>#include <iostream>
>#include <stdlib.h>
>
>#include <SDL/SDL.h>
>
>#define width 320;
>#define height 200;
>#define BPP 16;
>
>void Slock(SDL_Surface *screen);
>void Sulock(SDL_Surface *screen);
>
>using namespace std;
>
>SDL_Surface *screen;
>SDL_Surface *tile;
>
>int main(int argc, char *argv[])
>{
>
>SDL_Rect dest;
>
>if( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO) <0 )
>{
>  printf("Unable to init SDL: %s\n", SDL_GetError());
>  return 1;
>}
>  atexit(SDL_Quit);
>  
>  screen = SDL_SetVideoMode(320, 200, 32, 
>SDL_HWSURFACE|SDL_DOUBLEBUF|SDL_FULLSCREEN);
>  tile = SDL_LoadBMP("D:\Pyro\img\brick.bmp");
>  if ( screen == NULL )
>   {
>     cout << "Unable to set "<< "320" << "x" << "200" << "x" << "16" << " 
>video: " << SDL_GetError() << endl; 
>     return 1;
>   }
>  Slock(screen);
>  
>  dest.x = 0; dest.y=0;
>  SDL_BlitSurface(screen, NULL, tile, dest);
>
>  Sulock(screen);
>  SDL_Flip(screen);
>  for (int uhu=0; uhu<1000000000; uhu++);
>  
>  return 0;
>}
>
>
>void Slock(SDL_Surface *screen)
>{
>  if ( SDL_MUSTLOCK(screen) )
>  {
>    if ( SDL_LockSurface(screen) < 0 )
>    {
>      return;
>    }
>  }
>}
>
>void Sulock(SDL_Surface *screen)
>{
>  if ( SDL_MUSTLOCK(screen) )
>  {
>    SDL_UnlockSurface(screen);
>  }
>}
>
>
>
>
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