Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
General
»
ttrackbar flickering
Free Pascal
Website
Downloads
Wiki
Documentation
Bugtracker
Mailing List
Lazarus
Website
Downloads (Laz+FPC)
Packages (OPM)
FAQ
Wiki
Documentation (RTL/FCL/LCL)
Bugtracker
CCR Bugs
IRC channel
GIT
Mailing List
Other languages
Foundation
Website
Useful Wiki Links
Project Roadmap
Getting the Source
Screenshots
How to use the forum
About donations (wiki)
Bookstore
Computer Math and Games in Pascal
(preview)
Lazarus Handbook
Search
Advanced search
Recent
publish lazarus applicati...
by
CM630
[
Today
at 08:44:09 am]
Computational Language Tr...
by
MarkMLl
[
Today
at 08:43:16 am]
Offical launch of the 1 B...
by
Gustavo 'Gus' Carreno
[
Today
at 07:32:47 am]
New to internet programmi...
by
TRon
[
Today
at 07:05:08 am]
Unable to open the packag...
by
JuhaManninen
[
Today
at 06:07:36 am]
A "leisure" question on W...
by
Thaddy
[
Today
at 05:53:56 am]
App with black theme runs...
by
AlexTP
[
Today
at 04:36:04 am]
Your best UI design - con...
by
AlexTP
[
Today
at 04:32:36 am]
Poll: Watches and Display...
by
440bx
[
Today
at 01:08:58 am]
Free AI to use in local
by
gidesa
[March 29, 2024, 10:14:48 pm]
Program loop "runaway" wh...
by
Thaddy
[March 29, 2024, 09:34:48 pm]
Slight improvement for la...
by
n7800
[March 29, 2024, 07:18:44 pm]
Controlling the behavior ...
by
1HuntnMan
[March 29, 2024, 04:55:21 pm]
Making panels with lots o...
by
lainz
[March 29, 2024, 04:00:20 pm]
Ribbon bar in Lazarus 3.2...
by
lainz
[March 29, 2024, 03:58:42 pm]
Have anyone develop UEFI ...
by
PascalDragon
[March 29, 2024, 02:16:40 pm]
Dynarray initialization p...
by
PascalDragon
[March 29, 2024, 02:12:47 pm]
STARS and Regular POLYGON...
by
Boleeman
[March 29, 2024, 02:05:38 pm]
how to change the color f...
by
cdbc
[March 29, 2024, 12:02:27 pm]
Understanding and adjusti...
by
ArchChem
[March 29, 2024, 11:49:35 am]
Using KeyPress event, how...
by
KodeZwerg
[March 29, 2024, 10:44:31 am]
Big Numbers Math
by
Thaddy
[March 29, 2024, 07:22:49 am]
Parquet?
by
Thaddy
[March 29, 2024, 07:11:17 am]
Project fails on run but ...
by
jamie
[March 29, 2024, 12:54:49 am]
Curling Pythagoras Tree: ...
by
Boleeman
[March 29, 2024, 12:00:37 am]
« previous
next »
Print
Pages: [
1
]
Author
Topic: ttrackbar flickering (Read 986 times)
fcu
Jr. Member
Posts: 89
ttrackbar flickering
«
on:
October 20, 2020, 03:47:44 pm »
Hi
seems ttrackbar is not benefit from DoubleBuffered option event if its explicitly turned on
its the only component that flickering when resizing the form , the rest of controls is fine
i am using lazarus 2.0.10 & fpc3.2 ( windows7 32bits )
Logged
jamie
Hero Member
Posts: 6091
Re: ttrackbar flickering
«
Reply #1 on:
October 20, 2020, 11:01:34 pm »
I don't see that on the trunk nor the release., or even older ones I have installed.
This is tested on windows 10...
the trackbar is a native control so native control so maybe the difference in os ?
Logged
The only true wisdom is knowing you know nothing
trev
Global Moderator
Hero Member
Posts: 2020
Former Delphi 1-7, 10.2 user
Re: ttrackbar flickering
«
Reply #2 on:
October 21, 2020, 12:51:49 am »
I seem to recall that there was another recent flickering thread about this or another component. Whether the flickering was noticed depended on the speed of the individual's computer hardware.
Found it: see
this thread
.
Logged
jamie
Hero Member
Posts: 6091
Re: ttrackbar flickering
«
Reply #3 on:
October 21, 2020, 01:59:16 am »
I think we need a strip down demo to show this effect.
it could be that it is anchored to other controls and things are going awry
Logged
The only true wisdom is knowing you know nothing
fcu
Jr. Member
Posts: 89
Re: ttrackbar flickering
«
Reply #4 on:
October 21, 2020, 01:51:07 pm »
i recorded the issue
https://ibb.co/D5yrkjq
Logged
fcu
Jr. Member
Posts: 89
Re: ttrackbar flickering
«
Reply #5 on:
October 21, 2020, 02:04:55 pm »
this is really weird
after adding a menu to the main form the trackbar stops flickering and the menu start flickering
https://ibb.co/99HMYtp
Logged
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
General
»
ttrackbar flickering
TinyPortal
© 2005-2018