How to open image in RGB32 mode [SOLVED]

[sosun]

I'm trying to open an image like follows:

Qimage image("/home/john/pic.png", QImage::Format_RGB32);

But it gives me an error : no matching function call to QImage::QImage(const char [], QImage::Format);

The reason I'm asking is that my picture being processed as greyscale or 8bit or whatever, but not colored as I need. Look at the 3rd comment in this question: http://stackoverflow.com/questions/31163679/how-to-make-gaussian-blur-work-properly

[SGaist]

Hi,

If I understand you correctly, you have an unusual png formatted image ?

[sosun]

@SGaist as I figured out there was no problem in image, but in my code. Anyway, thanks. I'll mark it as solved.

[SGaist]

Was the problem only the wrong constructor called ?

[sosun]

@SGaist I tried to change the complete logic of my app so I wasn't needed in constr like this, but picture was still colorful and this because I don't think I was ever needed to construct image in that way. Maybe Qt takes an advantage of guessing what picture looks like on itself?

[SGaist]

There's no guessing, Qt will load your image with the corresponding plugin which uses the usual libraries to manipulate the images (libpng, libjpeg etc.). Then IIRC there might be a conversion to a format suited for display e.g. ARGB32.