why my program quit when I use g_thread?

[顺珉 吴 <moody_blur yahoo com cn>]

when I add these code,my program will crash at the
start, and report segments falt?:

if (!g_thread_supported())
g_thread_init();

gdk_thread_enter();
gtk_set_local();
gtk_init();
/* init my gtk window here */
gtk_main();
gdk_thread_leave();
return;

But it work fine if I remove these and use single thread?

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