pointer reference confusion

[sincnarf]

Hello guys I am trying to modify the Image Viewer example of qt so that it gets an image with its constructor. This is wrong... how can I correct this:

ImageViewer::ImageViewer(QImage *image){
.....
	QPixmap pixmap = QPixmap::fromImage(*image);
	QPixmap pixmap2 = QPixmap::fromImage(&image);
.....
}

ImageViewer::ImageViewer(QImage *image){
.....
	QPixmap pixmap = QPixmap::fromImage(*image);
	QPixmap pixmap2 = QPixmap::fromImage(&image);
.....
}

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The new ImageViewer terminates upon imageviewer show

[marcel]

Why do you need to pass a QImage pointer pointer?

QPixmap::fromImage takes a const Image&.
So the statement:

QPixmap pixmap = QPixmap::fromImage(*image);

QPixmap pixmap = QPixmap::fromImage(*image);

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is correct as long as image is a valid pointer.

It probably crashes because the image pointer is null or not valid.
I say the best way is to pass a const QImage& also, since QImage is implicitly shared.