Multiple UNDO in gui

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Nidhi SRIVASTAVA
Nidhi SRIVASTAVA il 27 Lug 2017
Commentato: Walter Roberson il 31 Lug 2017
I am working on guide. I wish to undo the values of the GUI multiple times. I could undo the values one time. Now I am looking for ways to undo it multiple times. If anybody could suggest me something, it will be really helpful. Thank you

Risposte (1)

Shruti Shivaramakrishnan
Shruti Shivaramakrishnan il 31 Lug 2017
You could store the values that are being modified in a structure and "undo" them by removing it from the structure. This new updated value could be the previous value being displayed.
  1 Commento
Walter Roberson
Walter Roberson il 31 Lug 2017
I was thinking of ways to track the changes one by one, find the previous version of the value, restore that. But now I realize that probably far easier would be to have a struct array that has all of the values; every time you make a change, clone the last entry in the struct, make the change there, and add that on the end of the struct. You would use this in conjunction with a routine that took the struct array, extracted the last entry, and set all of the various controls and displays appropriately.

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