CODEWITHSUNDEEP
c++qt
bob_the_builder
bob_the_builder

Reputation: 119

Cannot open source file "ui_QtGuiApplication.h" in default Qt project

I installed the latest QT version and the QT tool for Visual Studio. When creating a new GUI project in Qt, the default program should create an empty window, but it seems that I'm getting an E1696 error in Visual Studio Community: "cannot open source file "ui_QtGuiApplication4.h".

The error takes place in the default header class created for the project:

#include <QtWidgets/QMainWindow>
#include "ui_QtGuiApplication4.h"

class QtGuiApplication4 : public QMainWindow
{
    Q_OBJECT

public:
    QtGuiApplication4(QWidget *parent = Q_NULLPTR);

private:
    Ui::QtGuiApplication4Class ui;
};

The Ui tag is also not recognized.

I added the additional include directiories for the QT path and I tried switching up between the 64bit and 32bit version of QT, but I'm getting the same error.

Any help would be appreciated!

Upvotes: 0

Views: 1075

Answers (1)

FMeinicke
FMeinicke

Reputation: 648

The ui_<YourClass>.h header file is a file that only gets generated for you when you compile your project. Qt's User Interface Compiler uic will read your .ui file(s) and create the corresponding ui_ headers before the actual C++ compiler is invoked.

So you have to give it at least one compile run to generate the file. Then your IDE should be smart enough to find it.

FYI: Using QtCreator 4.12 you won't even have to compile. The clang backend process will generate the file in a temp folder somewhere probably to give you the proper code inspections (regarding code completion and so on). As I read from your question you're using Visual Studio which doesn't seem to do that.

Upvotes: 1

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