Trapping Frame Entrance In Tkinter

I'd like to bind to entrance/exit to/from a Frame. That's pretty easy, but it seems that when I mouse over some widget that is in the Frame, that's trapped as an exit from the Fram

Solution 1:

The actual problem here is rather subtle: in TextArea's __init__, you failed to pass on the master parameter to the superclass, so it defaulted to being a child of the root window. In other words, the TextArea is actually a sibling of the MainWindow, rather than a descendant as you intended. It is thus necessary that there be a <Leave> from one in order to <Enter> the other. The solution is to do super().__init__(master), just like you did in MainWindow.