Tries to become the owner of the specified context.
If some other thread is the owner of the context,
returns FALSE immediately. Ownership is properly
recursive: the owner can require ownership again
and will release ownership when g_main_context_release()
is called as many times as g_main_context_acquire().
You must be the owner of a context before you
can call g_main_context_prepare(), g_main_context_query(),
g_main_context_check(), g_main_context_dispatch().
Tries to become the owner of the specified context. If some other thread is the owner of the context, returns FALSE immediately. Ownership is properly recursive: the owner can require ownership again and will release ownership when g_main_context_release() is called as many times as g_main_context_acquire(). You must be the owner of a context before you can call g_main_context_prepare(), g_main_context_query(), g_main_context_check(), g_main_context_dispatch().