[Qgis-developer] How to set Vector layer transparency with pyQgis ?

[Geo DrinX]

Hello all,

... as in object, I need to set the transparency of all the vector layers
in my plugin ( "rasparenza" ).

What is the syntax to set the transparency of a vector layer (in pyQis 1.8
and 2.0 versions ) ?

I am searching in documentation and in  "gis.stackexchange",  but I only
found... myself.


Thank you in advance for any info

Roberto
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