Re: [Discuss-gnuradio] Creating QT GUI out-of-tree blocks in Python

Hi Patrick,
ah sorry, I misunderstood you.
So yes, I think this is possible, and you would be very welcome to write useful Qt visualizations!
To point you to a few existing ones:
Tim's PyQt blocks are very useful!
http://oshearesearch.com/tag/gr-pyqt/ , get the source code at https://github.com/osh/gr-pyqt, or install via pybombs.

By the way, I'm highly interested in how you combine your GUIs with GNU Radio flow graphs! It's generally agreed that pure signal-processing applications are fun and all, but good recipes on how to integrate GNU Radio (which is technically but a library) in applications are a bit rare.

Cheers,
Marcus

On 21.11.2015 20:52, Patrick Krämer wrote:

Hi Marcus,

thanks for your reply. Yes, your guideline given under the link works for standalone GUI flow graphs. I was trying to write GUI blocks like the QT GUI Time Sink for example. Meaning I can drag them in GRC on the canvas and at runtime a widget is added to the GUI by this custom block.

Like this, I wouldn't have to manually edit python files every time I want to use the block. Thanks to anyone, who can give me further hints.

Greetings

Patrick

Am 19.11.2015 um 19:45 schrieb Marcus Müller <marcus.mueller@ettus.com>:

Hi Patrick,

this should work. I meddled with this very subject a while back; the idea was that you can just replace the "Qt App framework" boilerplate that GRC generates with your own PyQt/PySide application.
https://lists.gnu.org/archive/html/discuss-gnuradio/2015-09/msg00038.html

Best regards,
Marcus

On 19.11.2015 18:56, Patrick Krämer wrote:

Hi everybody,

I would like to create out-of-tree modules for the GRC, that show graphical interfaces (GUIs) created with QT. As the purpose of these blocks is mainly for prototyping only, I would like to do everything quickly in Python, without the need of additional C++-files.

Here is what I am able to do:

- I can create OOT modules and blocks and use these in the GRC in connection with build-in blocks.

- I can create QT GUIs with QtDesigner and run those in combination with standalone python gnuradio flowgraphs.

What I would like to do is to use the GRC to combine the pre-installed blocks with my own custom GUI blocks. I only found QT GUI blocks programmed in C++ so far. Does anyone have a python block I can look into and cheat with? I assume I can only run widgets created with QtDesigner and not full MainWindows?

What I have so far is my custom out-of-tree sink block, that I can use in GRC. How can I add the .GUI from QtDesigner to the blocks python code? 

Thanks alot. Your help is very much appreciated.

Greetings,

Rashid

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