Qt Error: LNK1120: 1 unresolved externals

Asked Feb 05 '20 at 18:03

Active Feb 05 '20 at 18:03

Viewed 17 times

widget.obj:-1: error: LNK2001: unresolved external symbol "protected: virtual void __cdecl QWidget::mouseLeaveEvent(class QEvent *)" (?mouseLeaveEvent@QWidget@@MEAAXPEAVQEvent@@@Z)

This is the error, which appeared in my project. I have 2 header file and 2 source file, also main.cpp In one of my header files i had a function like this:

protected:

virtual void mouseLeaveEvent(QEvent* event);

When this error appeared, i commented this function, but nothing has changed.

asked Feb 05 '20 at 18:03

user12825360

Most likely you don't define the `QWidget::mouseLeaveEvent` function, don't include in your build the source file that defines it, or don't include the library that defines it. – 1201ProgramAlarm Feb 05 '20 at 19:32
the reason is that this error appears in any project i open – user12825360 Feb 06 '20 at 20:37

Qt Error: LNK1120: 1 unresolved externals

0 Answers0