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我有一個應用程序,我正在使用gtk在python中編寫,我希望它自動關閉括號'並將光標放在它們之間問題是我隨機得到以下錯誤並且讓程序崩潰:gtk文本問題
./mbc.py:266: GtkWarning: 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
buff.place_cursor(buff.get_iter_at_line_offset(itter.get_line(),Iter.get_offset()-1))
./mbc.py:266: GtkWarning: gtktextbtree.c:4094: char offset off the end of the line
buff.place_cursor(buff.get_iter_at_line_offset(itter.get_line(),Iter.get_offset()-1))
Gtk-ERROR **: Char offset 568 is off the end of the line
aborting...
Aborted
在那個區域周圍的代碼是這樣的:
def insert_text(self, buff, itter, text, length):
if text == '(':
buff.insert_at_cursor('()')
mark = buff.get_mark('insert')
Iter = buff.get_iter_at_mark(mark)
buff.place_cursor(buff.get_iter_at_line_offset(itter.get_line(),Iter.get_offset()-1))
誰能告訴我如何解決這個問題?我找不到任何其他方法將光標置於圓括號'