针对你遇到的错误信息 "variable has incomplete type 'qapplication'",我们可以从以下几个方面进行分析和解决: 识别并理解错误信息: 这个错误通常意味着编译器在尝试使用QApplication类型时,没有获得足够的信息来确定这个类型的完整定义。这可能是由于多种原因导致的,比如头文件未包含、命名空间使用错误或Qt库未正确配...
src/main.cpp:16:18: error: variable has incomplete type'QApplication' QApplication a(argc, argv); ^ /anaconda/include/qt/QtCore/qobject.h:453:18: note: forward declaration of 'QApplication' friend class QApplication; ^ src/main.cpp:45:13: error: use of undeclared identifier'QMessageBox...
bcdedit /set hypervisorlaunchtype off 重启后好了, 真心有点恶心到我了, --笪笠QT 'variable has incomplete type' and 'forward declaration of 'Qxxx' ' issues ...https://forum.qt.io/topic/102999/strange-variable-has-incomplete-type-and-forward-declaration-of-qapplication-issuesHelp=>Abaout Plugi...