问题
In manual for QTreeWidget it states that we have to:
include
however when I do that I get error:
d:*********: error: C1083: Cannot open include file: 'QTreeWidget': No such file or directory
However #include gets found.
Where does it go wrong here? Thanks!
回答1:
Add QT += widgets (to link with the widgets module) into your .pro file, then run qmake and then build your project.
来源：https://stackoverflow.com/questions/16791844/error-qt-5-0-qtreewidget-include-not-found