Problem with undo delete in TextBox control

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Predrag Rakic - 12 Jan 2005 11:53 GMT

How can be selected text in a TextBox deleted by issuing some TextBox class method or property? The goal of the deletion is that it can be undone. I have tryed to delete text with textBox.SelectedText = "", which functions as it can be expected, but can not be undoned.What is interesting, is that it functions well with RichTextBox control. Regards, Predrag.

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Claes Bergefall - 13 Jan 2005 10:33 GMT

.NET doesn't have a built in way of doing that.
You'll have to use PInvoke:

[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern int SendMessage(System.IntPtr hWnd, int msg, int
lParam, int wParam);
private const int WM_CLEAR = 0x0303;
...
SendMessage(myTextBox.Handle, WM_CLEAR, 0, 0);

/claes

> How can be selected text in a TextBox deleted by issuing some TextBox class method or property? The goal of the deletion is that it can be undone.

I have tryed to delete text with textBox.SelectedText = "", which functions
as it can be expected, but can not be undoned.What is interesting, is that
it functions well with RichTextBox control. Regards, Predrag.

> ---
> Posted using Wimdows.net Newsgroups - http://www.wimdows.net/newsgroups/

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Predrag Rakic - 14 Jan 2005 12:37 GMT

Hi Claes, undo delete in TextBox control works fine. Thanks, Predrag.

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Problem with undo delete in TextBox control

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