gtk_study/05.xml_layout.c

//
// Created by 李晓明 on 2022/11/24.
//
#include <gtk/gtk.h>

static void print_hello(GtkWidget *widget, gpointer data) {
  g_print("Hello: %s\n", (char *) data);
}

int main(int argc, char **argv) {
  GError *error = NULL;

  gtk_init(&argc, &argv);

  GtkCssProvider *css_provider = gtk_css_provider_new();
  if (gtk_css_provider_load_from_path(css_provider, "builder.css", &error) == 0) {
    g_printerr("Error loading css file: %s\n", error->message);
    int err_code = error->code;
    g_clear_error(&error);
    return err_code;
  }

  GtkBuilder *builder = gtk_builder_new();
  /* 加载样式 文件*/
  if (gtk_builder_add_from_file(builder, "builder.ui", &error) == 0) {
    g_printerr("Error loading builder file: %s\n", error->message);
    int err_code = error->code;
    g_clear_error(&error);
    return err_code;
  }

  GObject *window = gtk_builder_get_object(builder, "window");
  /* 使样式文件生效 */
  gtk_style_context_add_provider_for_screen(gtk_window_get_screen(GTK_WINDOW(window)),
                                            (GtkStyleProvider *) css_provider, GTK_STYLE_PROVIDER_PRIORITY_USER);

  g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

  GObject *button1 = gtk_builder_get_object(builder, "button1");
  g_signal_connect(button1, "clicked", G_CALLBACK(print_hello), "button1");

  GObject *button2 = gtk_builder_get_object(builder, "button2");
  g_signal_connect(button2, "clicked", G_CALLBACK(print_hello), "button2");

  GObject *quit = gtk_builder_get_object(builder, "quit");
  g_signal_connect(quit, "clicked", G_CALLBACK(gtk_main_quit), NULL);

  g_object_unref(builder);

  gtk_main();
  return 0;
}