[ScintillaNET] Re: A Modification Event Handler Bug
- From: Garrett Serack <gserack@xxxxxxxxxxxxxxx>
- To: scintillanet@xxxxxxxxxxxxx
- Date: Thu, 24 Jun 2004 05:42:54 -0600
I'll put this into the next build.
Thanks!
Garrett
_____
From: scintillanet-bounce@xxxxxxxxxxxxx
[mailto:scintillanet-bounce@xxxxxxxxxxxxx] On Behalf Of Greg Dietsche
Sent: Wednesday, June 23, 2004 9:55 PM
To: ScintillaNET
Subject: [ScintillaNET] A Modification Event Handler Bug
Sorry about the double post before.... I thought the mailing list had
blocked my attachment.
I just started to use the sc-net Modified event handler, and once in a
while, it throws an error telling me that the unmanaged code has overflowed
a buffer, and possibly corrupted some memory.
I looked into the problem, and it appears to lie within code from
ScintillaControl.cs:
Specifically, I don't think all of the modification events supply a valid
string pointer. Some of them *appear* (I do not know this for sure) to pass
a pointer that points to garbage instead. After watching this for a bit, I
noticed that the 0x400 (beforeinsert) event mask is the only one that seems
to have a (valid) string attached to it!? If this is the case, then there
needs to be some code added to test if that bit is indeed set, and then act
accordingly.... ie:
if(( scn.modificationType & (uint)Enums.ModificationFlags.beforedelete )>0 )
Modified( this, scn.position, scn.modificationType,
System.Runtime.InteropServices.Marshal.PtrToStringAuto(scn.text),
scn.length, scn.linesAdded, scn.line, scn.foldLevelNow,scn.foldLevelPrev );
else
Modified( this, scn.position, scn.modificationType, null, scn.length,
scn.linesAdded, scn.line, scn.foldLevelNow,scn.foldLevelPrev );
this should prevent that crash from happening, but it doesn't gurantee that
the other variables are valid of course...
--
Regards,
Greg Dietsche http://www.gregd.org/ <http://www.gregd.org>
GForce Programming: http://calc.gregd.org
Detached Solutions: http://www.detachedsolutions.com
--------------------------------------------------------------------------
ScintillaNET Mailing List: ScintillaNET@xxxxxxxxxxxxx To unsubscribe: Send
an email to scintillanet-request@xxxxxxxxxxxxx and put "unsubscribe"
(without the quotes) in the Subject line. Web Page: http://tinyurl.com/yvoh2
Other related posts:
