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Placing a scrollbar in a toplevel window
In my application I have a single frame that contains some entries and three buttons. One of the buttons is labeled "Help". Here's what I'd like to do. When the user pushes "Help", another window will pop up displaying the help text. I have been able to do this using a procedure called... -
Odd results using keyboard entry
I've run into a situation that I can't explain and was wondering if anyone else has run across this. When I use an entry to allow user keyboard input, and restrict the key strokes to be numbers (0-9), I encounter a problem trying to enter some numbers after the initial number entered is a 0... -
disable button after initial selection
How would one deselect or disable a button after it has been initially selected so it can't be selected again?
