Loading jpeg (QPixmap with Qt Jambi)

**Mr_Blonde** · 14th September 2006, 15:45

Hi,

I am playing around with Qt Jambi and trying to load a simple JPG picture. Normally this shouldn't be a problem. This is the code:

Qt Code:

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QPixmap img = new QPixmap("/Users/oliver/dev/LDV/QtJambi/res/mac.jpg");
System.out.println("Image loaded: " + img.width() + "x" + img.height());

QPixmap img = new QPixmap("/Users/oliver/dev/LDV/QtJambi/res/mac.jpg");
System.out.println("Image loaded: " + img.width() + "x" + img.height());

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The point here is, the size of the picture is allways 0 and no image is displayed. I also tried to use a relative path but this didn't work either.

Does someone has a hint or maybe already tried simmilar things with Qt Jambi?

Thanks,
Olli

**jacek** · 14th September 2006, 16:25

I didn't try Qt Jambi yet, but normal Qt needs a plugin to be able to load JPEG images.

What does QImageReader::supportedImageFormats() return?

**Mr_Blonde** · 14th September 2006, 16:41

Here we go. :-)

That was the problem. Used a PNG instead and it worked. Thanks a lot!

Those are the supported types of Qt Jambi (tech preview 2):
[bmp, pbm, pgm, png, ppm, xbm, xpm]

**jacek** · 14th September 2006, 17:19

Originally Posted by Mr_Blonde

Those are the supported types of Qt Jambi (tech preview 2):
[bmp, pbm, pgm, png, ppm, xbm, xpm]

IMO it's just a matter of installing the right plugin or compiling it into Qt, as the above formats are supported by bare Qt (without any plugins).

**Mr_Blonde** · 14th September 2006, 18:06

Since Qt Jambi is only a technology preview you can only download a binary version. I have no idea if there is a possibility to add other image type support yet.