k, this compiles and links without error or warning but when I go to open the exe. the sdl window pops up and it instantly freeze's, I get a window's error to send a error report, whatever, it closes.... any help will help #include <math.h> #include <stdlib.h> #if defined(_MSC_VER) #include "SDL.h" #else #include "SDL/SDL.h" #endif SDL_Surface *screen; //*************************************************************************** #define PITCH (screen->pitch /4) void init() { int i,j, pos; for (i = 0; i < 640; i++) { int p = (int)((sin((i + 3247) * 0.02) * 0.3 * sin((i + 2347) * 0.04) * 0.1 + sin((i + 4378) * 0.01) * 0.6) * 100 + 380); pos = p * PITCH + i; for (j = p; j < 480; j++) { ((unsigned int*)screen->pixels)[pos] = 0x007f00; pos += PITCH; } } } //*************************************************************************** void newsnow() { int i; for ( i = 0; i < 8; i++) ((unsigned int*)screen->pixels) [rand() % 638 + 1] = 0xffffff; } //*************************************************************************** void snowfall() { int i, j; unsigned int *fb = (unsigned int*)screen->pixels; for (j = 479; j >= 0; j--) { int ypos = j * PITCH; for (i = 1; i < 639; i++) { if (fb[ypos + i] == 0xffffff) { if (fb[ypos + i + PITCH] == 0) { fb[ypos + i * PITCH] = 0xffffff; fb[ypos + i] = 0; } } } } } //*************************************************************************** void render() { // Lock surface if needed if (SDL_MUSTLOCK(screen)) if (SDL_LockSurface(screen) < 0) return; // ask SDL for the time in milliseconds int tick = SDL_GetTicks(); newsnow(); snowfall(); // Unlock if needed if (SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen); // tell SDL to update the whole screen SDL_UpdateRect(screen, 0, 0, 640, 480); } // entry point int main(int argc, char *argv[]) { // initialize SDL's subsystems - in this case only vidio if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError()); exit(1); } // register SDL_Quit to be called at exit; make sure things are // cleaned up when we quit atexit (SDL_Quit); // attempt to create a 640 by480 window with 32bit pixels screen = SDL_SetVideoMode (640, 480, 32, SDL_SWSURFACE); // if we fail, return error if ( screen == NULL ) { fprintf(stderr, "Unable to set 640x480 vidio %s\n", SDL_GetError()); exit(1); } init(); // main loop: loop forever while (1) { // render stuff render(); // poll for events, and handle the ones we care about SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_KEYDOWN: break; case SDL_KEYUP: // if escape is pressed, return ( and thus quit ) if (event.key.keysym.sym == SDLK_ESCAPE) return 0; break; case SDL_QUIT: return(0); } } } return 0;