Why Qt creator is not working #include?

Hi! Why not work this code?09cab5a364ee4d48a048ae87d20c6a38.png
July 2nd 19 at 14:04
2 answers
July 2nd 19 at 14:06
Most likely the Qt Version is below 5.7
I don't think... That's about the program
Qt Creator 4.0.2
Based on 5.7.0 Qt (MSVC 2013, 32-bit)

Collected Jun 13 2016 01:04:04

Revision 47b4f2c738

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The program is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - Elbert44 commented on July 2nd 19 at 14:09
July 2nd 19 at 14:08
Add in *.pro
QT += quick quickcontrols2

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