Limitation of Image Dimension

[qt27]

Is there some limitation of image dimensions? I have the following code:

m_pImage = new QImage(m_pcData, nWidth, nHeight, QImage::Format_Grayscale8);
pixmap = QPixmap::fromImage(*m_pImage);

Each time I try to load an image where the width is not a multiple of 4 fromImage blows up.

[jsulm]

@qt27 said in Limitation of Image Dimension:

blows up

What do you mean by "blows up"?

[kshegunov]

There is a limitation but it has nothing to do with your code.

Here it is clearly stated:

Constructs an image with the given width, height and format, that uses an existing read-only memory buffer, data. The width and height must be specified in pixels, data must be 32-bit aligned, and each scanline of data in the image must also be 32-bit aligned.

[qt27]

Ah, thanks kshegunov. I looked into the documentation of QPixmap because that one threw an exception.