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A comment on Calc.exe is now open source; there’s surprising depth in its ancient code (2019). Parent comment

Re:Calc.exe is now open source; there’s surprising depth in ... by foepys on Thursday March 25, 2021 @09:50AM (#26580243)
Notepad.exe is just a wrapper around the edit control [1] that Windows ships as part of its core system. It doesn't even properly support undo as you can only undo the last action, which becomes the new last action, allowing you to only toggle between two states.

https://docs.microsoft.com/en-us/windows/win32/controls/edit...

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Re:Calc.exe is now open source; there’s surprising depth in ... by ianhanschen on Thursday March 25, 2021 @10:03AM (#26580398)
It's a window that mostly uses an edit control, but, having code in Notepad, it's not just a wrapper around the edit control. Could you write Notepad in a day or two? Perhaps. But it's deceiving to say that it's just a wrapper around the edit control.
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