Hi everybody,
some time ago I stumbled over the problem that I missed a Qt version of
some blocks. In particular I wanted to have a Qt numbersink and a
Compass.
Thus, I created them [1] with Qt designer and integrated them into a GR
block. For now, they use Python. There are ‘.ui’ files that have to be
used
to generate the ‘.py’ files manually with pyuic4. Then they should
install
along with the other blocks.
Along with the Qt blocks I converted one of the gr-specest blocks ‘DOA
MUSIC’ to the GR 3.7 API. The code I used for this is from Balint
Seeber’s
gr-baz.
Also I wanted to have a Qt version of uhd_fft. But I didn’t want to add
code to the generated .py file. This lead to the creation of a ‘Catch
Function Result’ block. It is a pure xml block which calls another
blocks
member function and stores the result into its own variable. I didn’t
want
to use ‘Function Probe’ because I don’t want to spawn a new thread which
constantly calls a function.
For those of you who are eager to try those blocks. The uhd_fft_qt
flowgraph can be found in the projects examples folder.
In the hope that those blocks are helpful for others.
Johannes