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Editorial Team
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Asked: 2026-05-31T17:58:14+00:00

When compiling my project, I get the error: Error: D:\Programming\Projects\Aprovado\examwindow.cpp:6: error: invalid use of

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When compiling my project, I get the error:

Error: D:\Programming\Projects\Aprovado\examwindow.cpp:6: error:
invalid use of incomplete type ‘struct Ui::ExamWindow’

But there isn’t anything wrong with that. Here’s the line:

ExamWindow::ExamWindow(QWidget *parent) : QMainWindow(parent), ui(new
Ui::ExamWindow)

The files: http://dl.dropbox.com/u/2181407/damn.rar

Well, using QT4 with the follow files in the project: main.cpp, mainwindow.cpp, studywindow.cpp, mainwindow.h, studywindow.h, ui_mainwindow.h, ui_study.h, it works fiiine.
When I try to add the rest of the files it starts outputing errors.

I tried, I tried, I tried, and I cannot get out of it.

Could you guys help me out?

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1 Answer

  1. Editorial Team

    Assuming ui_examcalendar.h is the right UI generated header for the ExamWindow class, you should change the name of the top level widget in the designer for the file ExamCalendar.ui

    Currently, it is named Form so the generated UI class name is Ui::Form, so if you want Ui::ExamWindow, it should be named ExamWindow.

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