CODEWITHSUNDEEP
c#wpf
Kynethix
Kynethix

Reputation: 147

Detect when user is selecting text in RichTextBox

I have a RichTextBox in my application to show the user an activity log, this RichTextBox is updated automatically when a new event happens.

So my problem is... one of my coworkers is visually impaired, so I've implemented a way so that when he select a fragment of text, that fragment of text is read loud on speakers... up to here everything is working... but if while he is selecting a text a new event happens and the log is updated, the selected text sometimes is lost or is messed up.

Is there a way to detect when he is selecting text? So I can't stop updating while he select text. (And I don't mean to check if the selected text lenght is higher than 0, because sometimes I'd want to keep text selected and neither I want to check if mouse is down because sometimes he uses shift key + arrows to select text)

Upvotes: 3

Views: 965

Answers (1)

tofu
tofu

Reputation: 197

like Mangist has suggested, you can use the SelectionChanged event and "pause" the updating of the textbox.

or

before you update the textbox, you could run a simple check. for example

if (richTextBox1.SelectedText.Equals(string.Empty)) { update } else { dont update }

Upvotes: 2

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