QDesktopWidget file not found

当在引用QDesktopWidget时出现"file not found"的错误提示时，这通常是因为未正确包含相应的头文件。要解决这个问题，需要在代码中添加#include<QDesktopWidget>这一行，以确保正确地引用了QDesktopWidget头文件。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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