Re: multithreading on win32

[Christophe Combelles <ccomb free fr>]

>   It has never been impossible to control the GUI from a thread -- as a matter
> of fact, the GUI is controlled by a thread itself :). Now, if you are talking
> about having multiple threads accessing the GUI data structures, you will have
> to provide the synchronization yourself.
>
>    gdk_threads_enter() and gdk_threads_leave() are your friends.
>
>    There are several apps that do that: Gaim and Urlget are 2 that comes to
> mind.
>
> Hope this helps.
> Harring Figueiredo

I would like to something like that (see below):
But it doesn't work. The window disappears immediatly when the thread finishes,
and if the thread is kept alive (uncomment "sleep"), the window is frozen.
I just need to create a thread, and that thread must notify the user of its 
activity. (at least when it starts and stop, or with a progress bar)

-----------test.c--------------------
#include <gtk/gtk.h>

GtkWidget *window;
GtkWidget *label;
GThread *thread;

gint function() {
  gdk_threads_enter();
  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  label=gtk_label_new("my text");
  gtk_container_add(GTK_CONTAINER(window), label);
  gtk_widget_realize(window);
  gtk_widget_show_all(window);
  gdk_threads_leave();
  //sleep(10000);
}
gint main(int argc, char *argv[]) {
  g_thread_init (NULL);
  gdk_threads_init();
  gtk_init(&argc,&argv);
  thread = g_thread_create((GThreadFunc)function, NULL, TRUE, NULL);
  g_thread_join(thread);
  gdk_threads_enter();
  gtk_main();
  gdk_threads_leave();
}
--------------------------------------------
compiled on MinGW with:
gcc -g -DDEBUG -mms-bitfields -mwindows `pkg-config --cflags gtk+-2.0` -c test.c
-o test.od
gcc -static -mms-bitfields -mwindows -o test.exe test.od `pkg-config --libs g
tk+-2.0 --libs gthread-2.0` -L/lib
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