Basic SDL2 2D C++ Application (c++1y)

sdl_sample.cpp

#include <iostream>

#include <SDL2/SDL.h>

constexpr int SCREEN_WIDTH = 800;
constexpr int SCREEN_HEIGHT = 600;

int main(int argc, char *argv[]) {

	if (SDL_Init( SDL_INIT_VIDEO) < 0) {
		std::cerr << "There was an error initializing SDL2: " << SDL_GetError() << std::endl;
		return 1;
	}

	SDL_Window* displayWindow = SDL_CreateWindow("Basic SDL2 2D application", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);

	if (displayWindow == nullptr) {
		std::cerr << "There was an error creating the window: " << SDL_GetError() << std::endl;
		return 1;
	}

	SDL_Renderer* renderer = SDL_CreateRenderer(displayWindow, -1, SDL_RendererFlags::SDL_RENDERER_ACCELERATED);

	if (renderer == nullptr) {
		std::cerr << "There was an error creating the renderer: " << SDL_GetError() << std::endl;
		return 1;

	}

	// draw sample stuff
	SDL_RenderClear(renderer);
	SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);

	SDL_Rect rect { 100, 100, SCREEN_WIDTH - 200, SCREEN_HEIGHT - 200 };
	SDL_RenderFillRect(renderer, &rect);

	SDL_RenderPresent(renderer);

	// sleep for 5 seconds
	SDL_Delay(5000);

	// Clean up
	SDL_DestroyRenderer(renderer);
	SDL_DestroyWindow(displayWindow);
	SDL_Quit();

	return 0;
}