This is just suppose to display a bmp image to the SDL window front buffer. I played around with the code. And I think there is something wrong with my init() function. I'm new to SDL. But there must be a problem with my pointers or something I'm missing about SDL's fucntions EDIT: I used GDB and it turned out my close() function was the problem. I believe it was because I was freeing memory that was set to NULL? I got rid of the close fucntion and just freed mem after my delay function.
#include <SDL2/SDL.h>
#include <stdio.h>
#include <stdbool.h>
#define SCREENWIDTH 640
#define SCREENHEIGHT 480
SDL_Window *win = NULL;
SDL_Surface *scrn = NULL;
SDL_Surface *mscrn = NULL;
bool init()
{
bool suc = true;
char name[11] = "Hello SDL";
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
printf("%s", SDL_GetError());
suc = false;
}
win = SDL_CreateWindow(name, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREENWIDTH, SCREENHEIGHT, SDL_WINDOW_SHOWN);
if (win == NULL) {
printf("%s", SDL_GetError());
suc = false;
}
scrn = SDL_GetWindowSurface(win);
return suc;
}
bool loadmedia()
{
bool suc = true;
mscrn = SDL_LoadBMP("hello_world.bmp");
if (mscrn == NULL) {
printf("%s", SDL_GetError());
suc = false;
}
return suc;
}
void close()
{
SDL_FreeSurface(mscrn);
SDL_DestroyWindow(win);
SDL_Quit();
}
int main(int argc, char* args[])
{
if (!init()) {
close();
return 1;
}
if (!loadmedia()) {
close();
return 1;
}
SDL_BlitSurface(mscrn, NULL, scrn, NULL);
SDL_UpdateWindowSurface(win);
SDL_Delay(3000);
close();
return 0;
}
