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TRadiogroups - Arrowkeys
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Author
Topic: TRadiogroups - Arrowkeys (Read 1976 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
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Tomas Hajny
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TRadiogroups - Arrowkeys
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