GTK Focus issue when used with SDL

[btzy]

GTK Focus issue when used with SDL

[btzy]

Test case (modified from mlabbe/nativefiledialog#79):

main.c:

#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>

#include <SDL.h>

#include <nfd.h>

int main()
{
    SDL_Init(SDL_INIT_VIDEO);
    
    NFD_Init();

    SDL_Window *window = SDL_CreateWindow("nativefiledialog issue 79", SDL_WINDOWPOS_CENTERED,
            SDL_WINDOWPOS_CENTERED, 800, 480, SDL_WINDOW_SHOWN);

    int w, h;
    SDL_GetWindowSize(window, &w, &h);

    bool running = true;
    while (running) {
        SDL_Event e;
        while (SDL_PollEvent(&e)) {
            if (e.type == SDL_QUIT) {
                running = false;
                break;
            }
            if (e.type == SDL_MOUSEBUTTONDOWN) {
                nfdchar_t *filename;
                nfdresult_t res = NFD_OpenDialog(&filename, NULL, 0, NULL);
                if (res == NFD_OKAY) {
                    printf("Got filename: %s\n", filename);
                    free(filename);
                }
            }
        }
    }

    SDL_DestroyWindow(window);
    
    NFD_Quit();
    
    SDL_Quit();

    return 0;
}

CMakeLists.txt:

cmake_minimum_required(VERSION 3.2)
project(MyProgram)


set (CMAKE_CXX_STANDARD 17)


add_executable(MyProgram main.c)

find_package(PkgConfig REQUIRED)
pkg_check_modules(SDL2 REQUIRED sdl2)
target_include_directories(MyProgram PRIVATE ${SDL2_INCLUDE_DIRS})
target_link_libraries(MyProgram PRIVATE ${SDL2_LIBRARIES})

add_subdirectory(${PROJECT_SOURCE_DIR}/../nativefiledialog-extended ${PROJECT_SOURCE_DIR}/../nativefiledialog-extended/build)
target_link_libraries(MyProgram PRIVATE nfd)