解决QT:forward declaration of 'struct Ui::xxx';invalid use of incomplete struct "Ui::Widget" 等莫名奇妙错误 今天在进行QT Widget的UI设计时,改了下Widget的对象名,然后在多次成功编译运行后,执行清理,重新构建,就出现了好多莫名奇妙的错误: widget.h:12: 错误:forward declaration of 'struct Ui::Widget'...
注意到 name = "Form" ;默认都是这个名字,本人就是照搬mainwindow中的代码才导致这个错误,肤浅啊。 当你在你的头文件中引用此界面时, 创建一个命名空间如 namespace Ui { class xxx; } 这里的XXX应与.ui文件中的name一致,否则就会导致如标题如述错误....
// Templatehandler.h #ifndef TEMPLATEHANDLER_H #define TEMPLATEHANDLER_H #include <QObject> // Forward declaration of QObject generates error class QListView; // Forward declarations class QTextEdit; class QModelIndex; class QStringListModel; class TemplateHandler : public QObject { Q_OBJECT publ...
qvfb.cpp:306: 错误:invalid use of undefined type ‘struct DeviceSkin’ qvfb.h:53: 错误:forward declaration of ‘struct DeviceSkin’ qvfb.cpp: In member function ‘void QVFb::enableCursor(bool)’: qvfb.cpp:379: 错误:invalid use of undefined type ‘struct DeviceSkin’ qvfb.h:53: 错误:forw...
D:\Qt\Qt5.10.0\5.10.0\mingw53_32\include/QtCore/qmetatype.h:114:21: note: forward declaration of 'class QVariant' F(QVariant, 41, QVariant) \ ^ D:\Qt\Qt5.10.0\5.10.0\mingw53_32\include/QtCore/qmetatype.h:1924:11: note: in definition of macro 'QT_FORWARD_DECLARE_STATIC_TYP...
D:\Qt\Qt5.10.0\5.10.0\mingw53_32\include/QtCore/qmetatype.h:114:21: note: forward declaration of'class QVariant'F(QVariant,41, QVariant) \ ^ D:\Qt\Qt5.10.0\5.10.0\mingw53_32\include/QtCore/qmetatype.h:1924:11: note: in definition of macro'QT_FORWARD_DECLARE_STATIC_TYPES_ITE...
forward declaration of 'Ui::MainWindow' 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 2.封装成公共函数 (1)所有对UI的操作都在主界面MainWindow类中,并封装成公共的函数 ...
E:/msys2_x86_64/mingw64/x86_64-w64-mingw32/include/mfidl.h:3245:19: note: forward declaration of ‘IMFSourceResolver’ {aka ‘struct IMFSourceResolver’} 3245 | typedef interface IMFSourceResolver IMFSourceResolver; 执行qmake生成makefile时,使用qmake D:\qt-src515\qtmultimedia -- -no-wmf解...
struct QMenuBar’/usr/include/QtGui/qmainwindow.h:58: 错误:forward declaration of ‘struct QMenuBar’要提前声明‘struct QMenuBar’综上所述,你没有声明和定义‘struct QMenuBar’也就是没有声明和定义QMenuBar类 更准确的说,你没有包含相应类的头文件 include<QMenuBar> ...
..\..\..\Qt\4.7.3\include\QtGui/../../src/gui/kernel/qwidget.h:76: error: forward declaration of 'struct QMouseEvent' ..\ChineseChess\chessmanUI.cpp: In member function 'virtual void ChessmanUI::mouseMoveEvent(QMouseEvent*)': ...