IQIT:
博客地址：https://www.cnblogs.com/qixianyu/
IQIT:
博客地址：https://www.cnblogs.com/qixianyu/
QT学习之forward declaration of 'struct Ui::xxx';invalid use of incomplete struct "Ui::Widg
在ubuntu更新，E: Some index files failed to download, they have been ignored, or old ones used inst错误(示例