error: QT 5.0 QTreeWidget include not found

StackOverflow https://stackoverflow.com/questions/16791844

  •  30-05-2022
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Question

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!

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Solution

Add QT += widgets (to link with the widgets module) into your .pro file, then run qmake and then build your project.

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