Problem with displaying a QPixmap on a QImage

[moatilliatta]

Hello everyone,

i've written the following code:

img = new QImage("images/01_greyscale.png");
	QLabel *text1 = new QLabel(tr("..."));
	img_greyscale->setPixmap(QPixmap::fromImage(*img));
	img_greyscale->show();
 
	QVBoxLayout *leftLayout = new QVBoxLayout;
	leftLayout->addWidget(text1);
 
	setLayout(leftLayout);
	setWindowTitle(tr("Test"));

img = new QImage("images/01_greyscale.png");
	QLabel *text1 = new QLabel(tr("..."));
	img_greyscale->setPixmap(QPixmap::fromImage(*img));
	img_greyscale->show();

	QVBoxLayout *leftLayout = new QVBoxLayout;
	leftLayout->addWidget(text1);

	setLayout(leftLayout);
	setWindowTitle(tr("Test"));

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"img_greyscale" is defined in the header-file.
When starting the program with the "img_greyscale->setPixmap" line no Window pops up, nothing happens at all, not even an error is thrown. But i can't terminate the program so there must be a problem with this line.
What do i do wrong?

The "images" folder lies in the source-folder. The png-image weights only 8kb.


Thanks for your help.

Greetings,
moat