Versionen im Vergleich

Alte Version 8

changes.mady.by.user Prof. Dr.-Ing. habil. Carsten Gremzow

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verglichen mit

Neue Version 9

changes.mady.by.user Prof. Dr.-Ing. habil. Carsten Gremzow

Gespeichert am

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# /usr/lib/qt/examples/gui/analogclock/analogclock -platform linuxfb

Qt Analog ClockImage RemovedImage Added

Then, another one which allows to test the touch panel:

# /usr/lib/qt/examples/widgets/scroller/graphicsview/graphicsview -platform linuxfb

Qt Graphics ViewImage RemovedImage Added

And a more “complete” and useful application, which as you can see does not fit very well on a 480×800 screen in portrait mode, but also allows to use the touchscreen:

# /usr/lib/qt/examples/widgets/widgets/calculator/calculator -platform linuxfb

...

Image Added


Filesystem size

To conclude this article, let’s have a look at the size of our filesystem size. After a completely clean build (make clean all), Buildroot can generate a nice graph of the filesystem size using make graph-size. In our case, it generates the following graph:

View file

Filesystem size graphImage Removed

namegraph-size.pdf
height400
So the overall filesystem size is 58.7 MB, on which 34.4 MB come from Qt. But our Qt is compiled with examples, and the examples take up 16.7 MB (this is not visible on the graph, it was calculated by looking at the size of /usr/lib/qt/examples/) on the target). Also, the dejavu font package is quite large, with 9.6 MB.