GTK 应用开发（简述）

sudo apt install libgtk-3-dev libgtk-4-dev

// hello.c
#include <gtk/gtk.h>

static void activate(GtkApplication *app, gpointer data)
{
    GtkWidget *window;
    window = gtk_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW(window), "Hello GTK");
    gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
    gtk_widget_show_all(window);
}

int main(int argc, char *argv[])
{
    GtkApplication *app;
    int status;
    app = gtk_application_new("org.example.hello", G_APPLICATION_FLAGS_NONE);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
    status = g_application_run(G_APPLICATION(app), argc, argv);
    g_object_unref(app);
    return status;
}

gcc hello.c -o hello $(pkg-config --cflags --libs gtk4)
./hello