after several failed attempts to create a QOpenGLWidget.I tried to run the QT example code https://code.qt.io/cgit/qt/qtbase.git/tree/examples/opengl/2dpainting?h=5.15 But that does not work too. I get the same vtable error as in the previous attempts. Here is the complete error code.
I already reinstalled QT and added
QT = core gui widgets opengl
LIBS = -framework OpenGL -framework QtOpenGL -framework GLUT
to the .pro file
CodePudding user response：
If you use Qt6, then you need to link against openglwidgets.