Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Free Pascal
»
Beginners
(Moderators:
FPK
,
Tomas Hajny
) »
TRadiogroups - Arrowkeys
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
change details Office fil...
by
majid.ebru
[
Today
at 06:36:57 am]
Forum slow
by
TRon
[
Today
at 04:26:32 am]
Web Applications with Pas...
by
egsuh
[
Today
at 04:02:51 am]
Demo Scene Picture sinwav...
by
Gigatron
[
Today
at 03:42:01 am]
Demo Scene Bitmap Font Sc...
by
Gigatron
[
Today
at 03:14:55 am]
open dialog - default dir...
by
jamie
[
Today
at 02:24:45 am]
Is it possible to open a ...
by
Martin_fr
[
Today
at 01:56:48 am]
leetcode doesn’t support ...
by
Joanna
[
Today
at 01:42:28 am]
Preparing FPC 3.2.4, poin...
by
peter.dell
[
Today
at 01:38:41 am]
Can function be used for ...
by
jamie
[
Today
at 12:26:42 am]
DbGrid, grid column check...
by
KodeZwerg
[
Today
at 12:08:29 am]
Colore celle StringGrid
by
JuanBell
[April 24, 2024, 10:37:56 pm]
Likely bug
by
440bx
[April 24, 2024, 10:12:59 pm]
Any upgrades to fpWeb pag...
by
verasan
[April 24, 2024, 10:11:46 pm]
AI, NLP and CAI: Text Gen...
by
indydev
[April 24, 2024, 08:54:00 pm]
Offical launch of the 1 B...
by
Gustavo 'Gus' Carreno
[April 24, 2024, 08:48:22 pm]
Multidimensional arrays a...
by
KodeZwerg
[April 24, 2024, 08:34:38 pm]
Ho Ho Ho IntraWeb in Laza...
by
Thaddy
[April 24, 2024, 08:31:29 pm]
[SOLVED] System.Now gives...
by
alpine
[April 24, 2024, 08:29:19 pm]
Installing and using Vamp...
by
Odacir
[April 24, 2024, 07:58:22 pm]
what's difference between...
by
ASerge
[April 24, 2024, 07:09:52 pm]
splitting an image
by
KodeZwerg
[April 24, 2024, 07:07:21 pm]
Debugger error
by
bobonwhidbey
[April 24, 2024, 07:03:07 pm]
How to: create DLL file f...
by
paule32
[April 24, 2024, 07:02:31 pm]
Your best UI design - con...
by
circular
[April 24, 2024, 06:48:12 pm]
« previous
next »
Print
Pages: [
1
]
Author
Topic: TRadiogroups - Arrowkeys (Read 1978 times)
Niklas
Newbie
Posts: 2
TRadiogroups - Arrowkeys
«
on:
October 23, 2017, 03:56:28 pm »
Hey,
is there a chance to block the keyevents on a TRadiogroup?
My goal is it, that a press on one of the arrowkeys
doesn't
increases or decreases the ItemIndex of my TRadiogroup,
because I need the Keyevent for another action.
Niklas
«
Last Edit: January 08, 2018, 01:36:52 pm by Niklas
»
Logged
rvk
Hero Member
Posts: 6171
Re: TRadiogroups - Arrowkeys
«
Reply #1 on:
October 23, 2017, 04:09:24 pm »
Set the KeyPreview of the form to true and do this in FormKeyDown().
It will eat all Key up and down for a TRadioButton.
Code: Pascal
[Select]
[+]
[-]
uses
LCLType
;
procedure
TForm1
.
FormKeyDown
(
Sender
:
TObject
;
var
Key
:
Word
;
Shift
:
TShiftState
)
;
begin
if
ActiveControl is TRadioButton
then
begin
if
Key
in
[
VK_UP
,
VK_DOWN
]
then
Key
:
=
0
;
end
;
end
;
You can also do the other actions in that place.
Logged
Niklas
Newbie
Posts: 2
Re: TRadiogroups - Arrowkeys
«
Reply #2 on:
October 23, 2017, 04:18:21 pm »
Well, that was easy.
Thank you for your fast help!
Niklas
Logged
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Free Pascal
»
Beginners
(Moderators:
FPK
,
Tomas Hajny
) »
TRadiogroups - Arrowkeys
TinyPortal
© 2005-2018