C1083: Cannot open include file: 'QGLWidget': no such file or directory

[Larissa F.]

I already added opengl in *.pro file

[Chris Kawa]

After modifying the .pro file re-run qmake (Build menu -> Run qmake) and rebuild your project.

[Larissa F.]

The previous error disappeared, but appeared another in mainwindow.h: C2061: syntax error: identifier 'GLWidget'.

[Chris Kawa]

The image upload functionality in the forum does not work. Please upload image to some external site and provide a link, or just type the error here.

[Larissa F.]

@Chris-Kawa Error : C2061: syntax error: identifier 'GLWidget'

[Chris Kawa]

...and could you post the line of code the error points to?