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Questions tagged [undo]

Undo is a command in many computer programs. It erases the last change done to the document reverting it to an older state. In some more advanced programs such as graphic processing, undo will negate the last command done to the file being edited.

854 questions
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Google Maps Android Undo Marker Drag

I am trying to add an undo functionality to my code. However, when I tried to get my marker's position in onMarkerDragStart, it does not give me the position of marker but, it gives a little bit upper of this position, so when I tried to undo…
Figen Güngör
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EaselJs, CreateJs Undo canvas drawing is too slow on mobile

I am creating phonegap/cordova android app for canvas drawing. I have replaced CordovaWebView(android stock browser webview) with https://github.com/ludei/webview-plus/ webview+ to improve the drawing performance on android platform. After replacing…
Mayank Kumar
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NSUndoManager won't undo editing of a NSMutableDictionary

I'm experiencing problems with the undo operation. The following code won't undo an removeObjectForKey: operation but the redo operation setObject:ForKey: works. - (void) insertIntoDictionary:(NSBezierPath *)thePath { [[[window undoManager]…
xon1c
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How do I subtract the last figure added to a total in VB

I want to create a button that will undo a mathematical procedure in VB.NET. The program consists of a list. The user adds items to this list. These items also have values(prices) attached them. These items are represented by buttons. So when the…
Luke
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Undo and Erase features in a drawing app Android (Duplicate)

This Question has been asked many times like Android Drawing, Erasing and Undoing Action But no one has giving the proper solution for it. I am making a drawing app and everything was working fine until i added undo feature. After adding undo…
Fahid Nadeem
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How to make a efficent undo-implementation in python

I want to make an undo-implementation in a Programm with GUI more efficent: At the moment every time you create an action, a deepcopy of my Dataobject will be generated. The problem: The Dataobject is veeery big, so the deepcopy takes about 2…
alabamajack
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Records Deleted. Commit executed. Can we have that records back from anywhere?

Recovered Records Should be up to date as when they were deleted.
Viplove Sharma
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Undo & redo for gdi graphics

Im trying to implement undo and redo using gdi in wpf. I am not very familiar with gdi and my attempts have been unsuccessful. On my mouse move event I draw like this: using (var g = Gdi.Graphics.FromImage(tempBitmap)) { …
Deniz Cetinalp
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Keyboard shortcut unintentionally triggering Java's UndoManager undo function

I have set up my application so that when I press Ctrl+Z, my UndoManager will undo the last entry. However, for some reason, Ctrl+H will also do this, and I have no idea why. Here is my source code.
Cg2916
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Undo a directory remove in HAMMER, DragonFly BSD

In DragonFly BSD, you have the neat functionality of transaction history for all files, which you can inspect using undo -a . If you remove a file you can bring it back to life using undo -o . Is there any…
Olle Härstedt
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Vim history deleted by git reset --hard

I'm using vim 7.3 with :verbose set history set to 10000, but my whole history on a file dissapears when doing git reset --hard or similar operations with git that removes or clears files not added or checked in to git. Why is that? My normal…
Ludwig Van Beethoven
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Undo last action in vb.net in Catia

I am trying to Undo last action in Catia via vb.net. I have tried (after grabbing catia object): CATIA.StartCommand("Undo") CATIA.StartCommand("Undo Empty selection") no results. When I switch to CATIA window and press Ctr^Z undo works. I…
Anna Karvouniari
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How do I find what a TextBox's contents will be after pressing Ctrl + Z, before it occurs?

I am writing a small function that will calculate the contents of a TextBox after the KeyPress event, but during the KeyPress event. I know, it sounds strange. :) The reason for this is because I have been given a project at work, where I am to fix…
Ste Moore
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Segmentation fault when storing top of stack into structure

I'm trying to implement a undo/redo function in a super simple text editor, as a project. I have a class, CommandProcessor, that takes what buttons the user pressed, and if it matches, executes a generic command that calls an execute() function of…
Alex
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Need a hint on undo, redo functionalities on many datasets in a database

I need a solution for a special scenario: Each user has many(millions to billions) database rows of his products. Each row is an product. Each user can only change his own products. Each subset of those products can be changed differently. Each…
Nighthawk2k14
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