How to fullscreen a QGLWidget?

Question

I am new to OpenGL and Qt, and I am learning both simultaneously(3 days already:). I couple of years ago I did some exmerimenting with DirectX and I clearly remember that it was possible to make a full-screen window there. By full-screen I mean really full-screen, even without the top part where you have the close fullscreen and minimize buttons.

I have this program so far:

#include <QApplication>

int main(int argc, char** argv)
{
    QApplication app(argc, argv);
    QGLWidget w;
    w.show();
    return app.exec();
}

What should I add to it to make w full-screen?

possible duplicate of [Fullscreen widget](http://stackoverflow.com/questions/1246825/fullscreen-widget) — Tim Cooper, Jul 25 '12 at 11:30

score 11 · Accepted Answer · edited May 08 '17 at 15:57

11

showFullScreen()

Although I don't want to just say RTM - the Qt online documentation really is excellent.

edited May 08 '17 at 15:57

Funk Forty Niner

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answered Oct 28 '10 at 18:28

Martin Beckett

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Thanks! :) And how do I restore its size to default later? Calling show upon showFullScreen doesn't help – Armen Tsirunyan Oct 28 '10 at 18:32
That answer is a link to documentation that says "To return from full-screen mode, call showNormal()" :) – Arnold Spence Oct 28 '10 at 18:50
@Arnold: Thanks again. I am really sorry for such newbie question. I assume that learning to correctly and efficiently use the documentation is a part of learning of the particular technology :) – Armen Tsirunyan Oct 28 '10 at 19:09
2

No worries. I think half of Qt's success is due to its documentation :) – Arnold Spence Oct 28 '10 at 19:18

score 1 · Answer 2 · answered Oct 28 '10 at 18:28

1

Try:

QGLWidget w(0L,Qt::SplashScreen);
w.showFullScreen();

However, I don't remember if Qt::SplashScreen is the good flag.

answered Oct 28 '10 at 18:28

tibur

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How to fullscreen a QGLWidget?

2 Answers2

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