Getting started with SDL2 with C++
Let's setup SDL2 Development environment.
- First download and install IDE clion here this IDE will save a lot of time for us.
- And the download SDL2 development bundle here
- Extract the sdl library to your favourite path for me its on C:/tools/SDL2
Then let's setup the project.
- Open CLion, and then new project give it name MyApp
- Choose C++ Executable
- And then config the CMAKELists, add sdl library to it
cmake_minimum_required(VERSION 3.17)
project(MyApp)
set(CMAKE_CXX_STANDARD 14)
include_directories(C:/tools/SDL2/include)
link_directories(C:/tools/SDL2/lib/x64)
add_executable(MyApp main.cpp)
target_link_libraries(${PROJECT_NAME} SDL2 SDL2main)
- Then add this simple window apps on main.cpp
#include <iostream>
#define SDL_MAIN_HANDLED
#include <SDL.h>
const int SCREEN_WIDTH = 1080;
const int SCREEN_HEIGHT = 768;
int main(int argc, char *args[]) {
SDL_Window *window = NULL;
SDL_Surface *surface = NULL;
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
std::cout << "SDL cannot be initialed: " << SDL_GetError() << std::endl;
} else {
window = SDL_CreateWindow(
"SDL Lesson1",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
SCREEN_WIDTH,
SCREEN_HEIGHT,
SDL_WINDOW_SHOWN
);
}
if (window == NULL) {
std::cout << "SDL cannot create window: " << SDL_GetError() << std::endl;
} else {
surface = SDL_GetWindowSurface(window);
SDL_FillRect(surface, NULL, SDL_MapRGB(surface->format, 255, 0, 0));
SDL_UpdateWindowSurface(window);
// SDL_Delay() will not draw the window properly
bool loop = true;
while (loop) {
SDL_Event e;
while (SDL_PollEvent(&e)) {
if (e.type == SDL_QUIT) {
loop = false;
}
}
}
}
}
- And run the program, you should see simple window with red background.
