将代码用方括号或引号括起来
选中代码，然后输入以下任一起始字符，系统会在选定范围末尾自动添加对应的结束字符：
- (
- {
- [
- <
- "
- '
若要指定是否自动插入匹配字符，请转至Preferences >Text Editor >Completion ，并在Automatically Insert Matching Characters 中选择相应选项。
此外，Qt Creator 会自动插入原始字符串字面量前缀的闭合字符。
另请参阅 “代码补全”、“操作指南：编辑代码”和“编辑代码”。
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