Thanks! I had found this ability of GraphWidget before I read this, but I still dont know how to choose the vertex, which is hovering by mouse and I dont know key of left click 11.08.16 13:00, graph-tool-request@skewed.de пишет:

Regarding having the SW respond to keyboard commands, you can do it by using the "key_press_call_back" parameter. This is a function that is called every time a key is pressed: