some bugs and some features not implemented

[VanilaMao]

I kind of seriously use the library to make a microscope image processing app, it feeds my requirement pretty well, but I did some monkey patch to fix some missing part and bugs, in case someone has the same issue, I put my repo here: https://github.com/VanilaMao/Image-processing/blob/main/lab/src/ribbon.py.

And I might have some time(don't know yet) to add checkbox etc support or some data binding feature, the library heavily support buttons but seems not too much support for other widgets.