我有一个使用 gtk 在 python 中编写的应用程序,我希望它自动关闭括号'并将光标放在它们之间问题是我随机收到以下错误并且程序崩溃:
./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
该区域周围的代码是这样的:
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))
谁能告诉我如何解决这个错误?我找不到任何其他 fmethods 将光标放在括号之间的那个特定位置