stian nixia no wrote: hi all, I'am a newbie here. i'am developing a user agent client , for a Telephony application using GTK+-1.2. The whole application has 5 threads running , i try to update a label , with gtk_label_set_text () , when some event occurs in the application , but it doesnt seem to take affect . When i use it with a debugger and when i single step code , everything appears to be fine . Could someone help me to overcome this problem.Read the threads section of the api-manual of gtk and gdk, and the usage of gdk_threads_enter() and gdk_threads_leave(). Sounds very like thread race problem. For all glib events, you need to call gdk_threads_enter()/gdk_threads_leave by hand. Events that comes from gtk, already holds this lock. gtk main looks like this while (!quit) { gdk_threads_leave(); /* unlock */ let_glib_run_until_we_have_a_event; gdk_threads_enter(); /* lock*/ handle_events; } Stian thanks Stian,� for the info , will check that out . cheers, Amith |