This is a well know bug in goocanvas, not in pygoocanvas itself.
To work around this issue create and show the canvas *before* to do any other thing, this way the canvas->canvas_window will be created.
Let us know if the workaround will solve your issue.
This is a well know bug in goocanvas, not in pygoocanvas itself.
To work around this issue create and show the canvas *before* to do any other thing, this way the canvas- >canvas_ window will be created.
Let us know if the workaround will solve your issue.