Bug 220093

Summary:	Incorrect text appear when scrolling on MS Windows
Product:	[Applications] kate	Reporter:	Arseny Klimovsky <arseny.klimovsky>
Component:	general	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	christoph, windows-bugs-null
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Arseny Klimovsky 2009-12-25 21:25:01 UTC

Version:            (using KDE 4.3.3)
OS:                MS Windows
Installed from:    MS Windows

On Windows XP 64-bit (this can be useful, I can't reproduce the bug on Windows XP 32-bit via Remote Desktop), on some rather big text files (usual size is 10-100 Mb).
When scrolling (using mouse wheel or scroll bar), sometimes instead on next text, old text appear several times. Everything get OK, if press on this area. Also no problem when pressing PgUp/PgDown buttons.
Example in pseudographics:

Original screen
---------------
| 111         |
| 2222        |
| 33          |
| 444         |
---------------
Scrolling 3 lines
---------------
| 33          |
| 444         |
| 444         |
| 444         |
---------------
Pressing mouse on the last line
---------------
| 33          |
| 444         |
| 55          |
| 6666        |
---------------

Comment 1 Christoph Cullmann 2010-05-15 18:00:16 UTC

Please retry with KDE 4.4.
In any case, we can't fix that in kate, we don't do any special stuff during painting. If the error still occurs, this is likely a qt problem :/