That dynamic cast will fail because main window is not related to qapplication. You should pass secondwindow ptr into read constructor. You shouldn't need to use statics.
Expert
Re: Access to UI elements from another class c++
That dynamic cast will fail because main window is not related to qapplication. You should pass secondwindow ptr into read constructor. You shouldn't need to use statics.
If you have a problem, CUT and PASTE your code. Do not retype or simplify it. Give a COMPLETE and COMPILABLE example of your problem. Otherwise we are all guessing the problem from a fabrication where relevant details are often missing.
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