gtk program problem!!!(enter pls)

jiekoo

Gdk-CRITICAL **: file gdkimage.c: line 42 (gdk_image_unref): assertion `GDK_IS_I
MAGE (image)' failed
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Gtk-WARNING **: Invalid text buffer iterator: either the iterator is uninitialized, or the characters/pixbufs/widgets in the buffer have been modified since the iterator was created.
You must use marks, character numbers, or line numbers to preserve a position across buffer modifications.
You can apply tags and insert marks without invalidating your iterators,
but any mutation that affects 'indexable' buffer contents (contents that can be referred to by character offset)
will invalidate all outstanding iterators

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the program can run properly,but display the upon msg

what is this problem???

help me

jiekoo

以上為程序運行得過程中的告警，單編譯沒有任何的錯誤

有沒有高手指點一下啊