>>If the point&click GUI (graphical user interface) always uses
>>DISPLAYSUM, a lot of processing power has been wasted to do a very simple
>>operation.
>
>
>What GUI programming tools are there besides tools for building GUIs? How
>do they work? A program can't have menu-options for everything you might
>want to do!
You are making part of my point - point&click menu options don't fulfil all
needs and are often backed by the more generic but less effecient route to
an operation/function.
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