使用GTK - 绘制按钮和消息框

1. #include <gtk/gtk.h>
3. gint count = 1;
5. // 按下按钮时弹出响应框
6. void on_button_clicked (GtkWidget *button, gpointer userdata)
7. {
8.      GtkWidget* dialog;
9.      gchar buff[50];
10.      sprintf(buff, "counter: %d", count);
11.      dialog = gtk_message_dialog_new(
12.             NULL,
13.             GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
14.             GTK_MESSAGE_INFO,
15.             GTK_BUTTONS_OK,
16.             buff); 
17.      gtk_dialog_run(GTK_DIALOG(dialog));
18.      gtk_widget_destroy(dialog);
19.      // g_print在WINDOWS不起作用 
20.      //g_print("Hello, this is a GTK test.");
21.      //g_print("%d/n", (gint)userdata);
22.      //g_print("%d/n", count);
23.      count = count + 1;
24. }
26. int main(int argc,char *argv[])
27. {
28.     GtkWidget *window;
29.     GtkWidget *button;
30.     gtk_init(&argc,&argv);
31.     window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
32.     
33.     g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), &window);
34.     gtk_window_set_title(GTK_WINDOW(window), "Hello GTK");
35.     gtk_window_set_default_size(GTK_WINDOW(window), 500, 100);
36.     gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
37.     gtk_container_set_border_width(GTK_CONTAINER(window), 40);
38.     button = gtk_button_new_with_label("Press to show a string on the terminal");
39.     g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(on_button_clicked), (gpointer)count);
40.     gtk_container_add(GTK_CONTAINER(window), button);
41.     gtk_widget_show(button);
42.     gtk_widget_show(window);
43.     gtk_main();
44.     return FALSE;
45. }