Bug 9840 – Windows flicker badly when resized in -multiwindow mode

Bug 9840 - Windows flicker badly when resized in -multiwindow mode


Summary:	Windows flicker badly when resized in -multiwindow mode

Status:	RESOLVED FIXED

Product:	cygwin
Classification:	Unclassified
Component:	Cygwin/X
Version:	unspecified

Importance:	P2 normal
Target Milestone:	---
Assigned To:	Cygwin/X maintainer

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2009-02-12 18:15 UTC by Jon TURNEY
Modified:	2009-02-22 19:16 UTC (History)
CC List:	0 users

See Also:
Host:
Target:
Build:
Last reconfirmed:

Attachments
Patch to reduce resize flickering (1.96 KB, patch) 2009-02-12 18:18 UTC, Jon TURNEY	Details \| Diff
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Jon TURNEY 2009-02-12 18:15:23 UTC

Comment 1 Jon TURNEY 2009-02-12 18:18:35 UTC

Created attachment 3733 [details]
Patch to reduce resize flickering

Resizing windows in rootless mode causes them to flicker very badly.  This is
because the default WM_ERASEBKGND handling occurs, which erases the entire
invalidated area with the default (white) brush, pointlessly, before the entire
invalidated area is bitblt'ed from the shadow framebuffer.

Attached patch causes WM_ERASEBKGND handling to be skippped.

Comment 2 Cygwin/X maintainer 2009-02-12 19:58:20 UTC

Patch in the queue for 1.5.3-7.

Comment 3 Cygwin/X maintainer 2009-02-22 19:16:11 UTC

Pushed in 1.5.3-7; closing.