#ifdef _DEBUG
#define    CheckPtr(ptr, msg, needExit)      \
   do                    \
   {        \
    if(NULL == ptr){      \
    printf("'%s' returned null pointer\n",msg);   \
    if(needExit)      \
    ExitProcess(1);      \
    }       \
   }while(0)   

#else   
#define CheckPtr(fname)
#endif   

VOID MakeColorKey(HGE *hge,HTEXTURE tex, DWORD color);

/*
   Функция делает участки с цветом color в текстуре tex прозрачными
*/
VOID MakeColorKey(HTEXTURE tex, DWORD color)
{
   HTEXTURE hTex = tex;
     
   DWORD texWidth = Texture_GetWidth(hTex);
   DWORD texHeight = Texture_GetHeight(hTex);

   DWORD *Bitmap = Texture_Lock(hTex,FALSE);
   CheckPtr(Bitmap,"'Bitmap' in 'MakeColorKey'",1);

   for(DWORD i = 0; i<texWidth*texHeight; i++)
   {
    if(Bitmap[i] == color)   
     Bitmap[i] = 0;
   }
                return;
}

include "utils.h"
int main()
{
        HTEXTURE tex = new Sprite("img.png");
        MakeColorKey(tex,0xFFFFFFFF);
        Sprite *spr = new Sprite(tex);
        CheckPtr(spr,'spr in main()',true);
        spr->render()
}

int add(int a, int b);
int main()
{
     printf("%d",add(10,2));
     return 0;
}

int add(int a, int b)
{
     return a+b;
}