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<H1>[Mono-bugs] [Bug 425725] New: RichTextBox - Firing of Events differs to MS</H1>
<B>bugzilla_noreply at novell.com</B>
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TITLE="[Mono-bugs] [Bug 425725] New: RichTextBox - Firing of Events differs to MS">bugzilla_noreply at novell.com
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<I>Fri Sep 12 01:59:53 EDT 2008</I>
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<PRE><A HREF="https://bugzilla.novell.com/show_bug.cgi?id=425725">https://bugzilla.novell.com/show_bug.cgi?id=425725</A>
User <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">johnm at hlaustralia.com.au</A> added comment
<A HREF="https://bugzilla.novell.com/show_bug.cgi?id=425725#c1">https://bugzilla.novell.com/show_bug.cgi?id=425725#c1</A>
Summary: RichTextBox - Firing of Events differs to MS
Product: Mono: Class Libraries
Version: SVN
Platform: Other
OS/Version: All
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Windows.Forms
AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">johnm at hlaustralia.com.au</A>
QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
Found By: ---
Created an attachment (id=239208)
--&gt; (<A HREF="https://bugzilla.novell.com/attachment.cgi?id=239208">https://bugzilla.novell.com/attachment.cgi?id=239208</A>)
Proposed Fix
Description of Problem:
The TextChanged and SelectionChanged events do not execute in the same order to
the Microsoft .NET framework.
Additionally Appending Text should not fire the SelectionChanged event at all.
using System;
using System.Windows.Forms;
public class test
{
static void Main ()
{
Form f = new Form ();
RichTextBox rtb = new RichTextBox();
Button b = new Button();
b.Text = &quot;Append&quot;;
b.Parent = f;
b.Click += delegate { rtb.Text += &quot;a&quot;; };
b.Top = rtb.Height + 10;
rtb.SelectionChanged += new EventHandler(rtb_SelectionChanged);
rtb.TextChanged += delegate { Console.WriteLine(&quot;Text
Changed&quot;);};
rtb.Parent = f;
f.Load += delegate { };
Application.Run (f);
}
static void rtb_SelectionChanged(object sender, EventArgs e)
{
Console.WriteLine(String.Format(&quot;Selection: {0} Length: {1}&quot;,
(sender as RichTextBox).SelectionStart,(sender as
RichTextBox).SelectionLength));
}
}
If you execute the above program and manually enter 123 into the text box you
should get the following message on the console.
Test #1
Actual Results:
Text Changed
Selection: 1 Length: 0
Text Changed
Selection: 2 Length: 0
Text Changed
Selection: 3 Length: 0
Expected Results:
Selection: 1 Length: 0
Text Changed
Selection: 2 Length: 0
Text Changed
Selection: 3 Length: 0
Text Changed
Test #2
If you use the Append Button
Actual Results:
Selection: 0 Length: 0
Text Changed
Expected Results:
Text Changed
How often does this happen?
Every Time.
Additional Information:
I have attached a diff which fixes what is described above, not sure about how
a test case can be constructed.
--
Configure bugmail: <A HREF="https://bugzilla.novell.com/userprefs.cgi?tab=email">https://bugzilla.novell.com/userprefs.cgi?tab=email</A>
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.
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