How to override copy and paste in richtextbox

Question

How can I override the copy/paste functions in a Richtextbox C# application. Including ctrl-c/ctrl-v and right click copy/paste.

It's WPF richtextBox.

for Windows Forms: http://stackoverflow.com/questions/5618162/detecting-if-paste-event-occurred-inside-a-rich-text-box for WPF see here: http://stackoverflow.com/questions/3061475/paste-event-in-a-wpf-textbox — Davide Piras, Aug 30 '11 at 13:27
@Davide, the WPF link adds a handler, but it doesnt override it. — raym0nd, Aug 30 '11 at 13:49

score 18 · Accepted Answer · edited May 04 '16 at 16:11

18

To override the command functions:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData) 
{
  if (keyData == (Keys.Control | Keys.C))
  {
    //your implementation
    return true;
  } 
  else if (keyData == (Keys.Control | Keys.V))
  {
    //your implementation
    return true;
  } 
  else 
  {
    return base.ProcessCmdKey(ref msg, keyData);
  }
}

And right-clicking is not supported in a Winforms RichTextBox

--EDIT--

Realized too late this was a WPF question. To do this in WPF you will need to attach a custom Copy and Paste handler:

DataObject.AddPastingHandler(myRichTextBox, MyPasteCommand);
DataObject.AddCopyingHandler(myRichTextBox, MyCopyCommand);

private void MyPasteCommand(object sender, DataObjectEventArgs e)
{
    //do stuff
}

private void MyCopyCommand(object sender, DataObjectEventArgs e)
{
    //do stuff
}

edited May 04 '16 at 16:11

LarsTech

80,625
14
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225

answered Aug 30 '11 at 13:28

Edwin de Koning

14,209
7
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Do you know how to do that in WPF ? – raym0nd Aug 30 '11 at 13:50
@EdiwnThe WPF stuff you have, adds a handler but doesnt override the main cop/paste ones, they are still being called – raym0nd Aug 30 '11 at 14:03
3

@raym0nd: You could add 'e.CancelCommand();' to prevent the default copy/pasting... – Edwin de Koning Aug 30 '11 at 14:23
@EdwindeKoning For Windows Forms, this approach might work for CTRL+V, but not SHIFT+INSERT, which is also a standard paste key-combination. Of course, using your example, it'd be easier to extend the solution to support this. – CJBS Mar 12 '14 at 00:08

score 4 · Answer 2 · answered Aug 16 '13 at 15:59

4

What about Cut while using Copy and Paste Handlers? When you have your custom implementation of OnCopy and you handle it by

e.Handled = true;
e.CancelCommand();

OnCopy is also called when doing Cut - I can't find the way to find out whether method was called to perform copy or cut.

answered Aug 16 '13 at 15:59

Lufa

51
4

1

Me too, I dont know if it is Copy or Cut – Jeson Martajaya Dec 05 '14 at 00:34

score 2 · Answer 3 · answered Aug 30 '11 at 13:41

I used this:
//doc.Editor is the RichtextBox

 DataObject.AddPastingHandler(doc.Editor, new DataObjectPastingEventHandler(OnPaste));
 DataObject.AddCopyingHandler(doc.Editor, new DataObjectCopyingEventHandler(OnCopy));



    private void OnPaste(object sender, DataObjectPastingEventArgs e)
    { 

    }
    private void OnCopy(object sender, DataObjectCopyingEventArgs e)
    {

    }

How to override copy and paste in richtextbox

3 Answers3

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