invalid use of incomplete type 'class UI::MainWindow' solution

Enterprise 2022-04-04 22:50:42 views: null

The objectName is clicked in the Qt window but it is not modified. If you click another position, the first letter of MainWindow will be automatically lowercase, resulting in the above error.

Just change it back to uppercase

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Origin blog.csdn.net/weixin_51229250/article/details/123873004

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