How to revert a QDockWidget after calling restoreState()?
QT Version: 5.15.14
System: MSY2/UCRT64 (latest)
Qt QModel view use QSortFilterProxyModel fucntion is so slow，something wrong？
this is my first time add question ,and i am sorry ,i am not good at English.
Q_DECLARE_METATYPE results in assert failure after upgrading from Qt 4.8 > 5.15
I have a large file which uses these macros:
Qt message box-closing
I have created custom message box for my Qt application but whenever I click yes or no, my main application focus out and got minimized.
QT C++ Error: Undefined reference to button_clicked() for form handling
I’m a a QT noob and am trying to allow a button in mainwindow to open a new window. I keep getting this error:
undefined reference to ‘MainWIndow::on_pushButton_clicked()’