Set up SDL2 in Dev C++

1. Download SDL2-devel-2.0.16-mingw.tar.gz and extract them to any where you want. For example: C:\dev_lib

2. In Dev C++, create an Empty project: File > new > Project. Select "empty project".

3. In Tools > Compiler Options > Directories > C++ includes tab:
   add: C:\dev_lib\SDL2-2.0.16\i686-w64-mingw32\include\SDL2

4. Then in Libraries tab to the left:
   add: C:\dev_lib\SDL2-2.0.16\i686-w64-mingw32\lib

5. Now in Project > Project options > Parameters Tab > Linker:
   add: -lmingw32 -lSDL2main -lSDL2

6. Then in Directories Tab > Include Directories:
   add: C:\dev_lib\SDL2-2.0.16\i686-w64-mingw32\include\SDL2

7. In Library Directories: add: C:\dev_lib\SDL2-2.0.16\i686-w64-mingw32\lib

8. Copy the SDL2.dll file from C:\dev_lib\SDL2-2.0.16\i686-w64-mingw32\bin to, where your project executable will run.

Now compile and run this SDL code:

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

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* args[]){
	SDL_Window* window = NULL;
	SDL_Surface* screenSurface = NULL;
	if (SDL_Init( SDL_INIT_VIDEO ) < 0){
		printf( "SDL initialize error: %s\n", SDL_GetError());
	} else {
		window = SDL_CreateWindow(
            "SDL",
            SDL_WINDOWPOS_UNDEFINED,
            SDL_WINDOWPOS_UNDEFINED,
            SCREEN_WIDTH, SCREEN_HEIGHT,
            SDL_WINDOW_SHOWN);
		if (window == NULL){
			printf("Window could not be created: %s\n", SDL_GetError());
		}
		else {
			screenSurface = SDL_GetWindowSurface(window);
			SDL_FillRect(
				screenSurface,
				NULL,
				SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
			SDL_UpdateWindowSurface(window);
			SDL_Delay(2000);
		}
	}
	SDL_DestroyWindow(window);
	SDL_Quit();
	return 0;
}