test translucent window

sdl-test.c

#include <SDL3/SDL.h>
#include <SDL3/SDL_render.h>

int main(int argc, char* argv[]) {
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not initialize SDL: %s", SDL_GetError());
        return 3;
    }
    SDL_Window* window = SDL_CreateWindow(
        "Translucent Window",
        600,
        600,
       f SDL_WINDOW_HIGH_PIXEL_DENSITY | SDL_WINDOW_TRANSPARENT
    );

    if (!window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create window: %s", SDL_GetError());
        SDL_Quit();
        return 3;
    }
    SDL_Renderer* renderer = SDL_CreateRenderer(window, NULL);

    if (!renderer) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create renderer: %s", SDL_GetError());
        SDL_DestroyWindow(window);
        SDL_Quit();
        return 3;
    }

    int running = 1;
    SDL_Event event;
    while (running) {
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_EVENT_QUIT) {
                running = 0;
                break;
            }
        }

        SDL_SetRenderDrawColor(renderer, 155, 0, 155, 0);
        SDL_RenderClear(renderer);
        SDL_RenderPresent(renderer);
        SDL_Delay(16);
    }
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}

// gcc -o colored_square colored_square-sdl3.c -I../include -L../build/lib -lSDL3