01 2022 档案

摘要：注意 Qt自带类不能定义在全局范围内，否则会出现QWidget: Must construct a QApplication before a QWidget错误 默认使用close()关闭widget时不会释放资源，要设置setAttribute (Qt::WA_DeleteOnClose)。查看 阅读全文

摘要：Headers Headers use 1-6 hash (#) characters at the start of the line, corresponding to header levels 1-6. For example: # This is an H1 ​ ## This is an 阅读全文