[QGIS-Developer] createAlgorithmDialog in Processing script (within plugin)

[matteo]

Hi all,

I've a set of custom processing scripts within a plugin (that is both 
"normal" and processing provider plugin).

I'm trying to executing the dialog of these algorithm from one of the 
main plugin file. I found the processing.createAlgorithmDialog [0], but 
it is constantly crashing when I'm passing the instance of the algorithm:

my_alg = MyCustomAlg()
my_dialog = my_alg.createAlgorithmDialog(custom_dict)

## crash here

Thinking it was a problem of the threads I also tried to overwrite the 
`flag` method in the algorithm by setting also 
QgsProcessingAlgorithm.FlagNoThreading but with the same results.

I know I can run the processing algorithm with processing.run(....) but 
I need to open the dialog pre-filled with custom parameters and to get 
also some other outputs besides the standard ones (like the 
QgsFeatureSink path)

Thanks for any suggestion

Cheers

Matteo


[0] 
https://github.com/qgis/QGIS/blob/master/python/plugins/processing/tools/general.py#L155