SDL2 CreateRenderer throwing Invalid Window Error

Question

My current code is as follows:

#include <iostream>
#include "SDL.h"
#include "SDL_image.h"

int main(int argc, char **argv) {
    if (SDL_Init(SDL_INIT_EVERYTHING != 0)) {
        std::cout << "SDL_Init() Error: " << SDL_GetError() << std::endl;
        std::cin.get();
        return 1;
    }

    SDL_Window *win = SDL_CreateWindow("RandomSDL2", 100, 100, 1280, 720, SDL_WINDOW_SHOWN);
    if (win = nullptr) {
        std::cout << "SDL_CreateWindow() Error: " << SDL_GetError() << std::endl;
        std::cin.get();
        return 1;
    }

    SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (ren == nullptr) {
        std::cout << "SDL_CreateRenderer() Error: " << SDL_GetError() << std::endl;
        std::cin.get();
        return 1;
    }

    SDL_Surface *img = IMG_Load("res/test.png");
    if (img == nullptr) {
        std::cout << "IMG_Load() Error: " << IMG_GetError() << std::endl;
        std::cin.get();
        return 1;
    }

    SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, img);
    SDL_FreeSurface(img);
    if (tex == nullptr) {
        std::cout << "SDL_CreateTextureFromSurface() Error: " << SDL_GetError << std::endl;
        std::cin.get();
    }

    SDL_RenderClear(ren);
    SDL_RenderCopy(ren, tex, NULL, NULL);
    SDL_RenderPresent(ren);

    SDL_Delay(2000);

    SDL_DestroyTexture(tex);
    SDL_DestroyRenderer(ren);
    SDL_DestroyWindow(win);

    SDL_Quit();

    return 0;
}

It seems that the CreateRenderer function throws the error Invalid Window, I'm unsure as to why, I'm currently following this tutorial, I've copied the code down to a T besides the resolution and the use of SDL_image, SDL_image shouldn't really effect the creation of the renderer at this stage, I've also tried the resolution specified in the tutorial and it seems to still throw the same error.

Does anyone have any insight on this issue?

Answer 1

if (win = nullptr) {
        ^ assignment, probably wanted ==

Don't set win to nullptr and it probably won't be nullptr.