Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
General
»
Error: Operator is not overloaded?
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
Offical launch of the 1 B...
by
abouchez
[
Today
at 11:14:35 am]
STARS and Regular POLYGON...
by
KodeZwerg
[
Today
at 11:13:35 am]
Free AI to use in local
by
Thaddy
[
Today
at 11:05:25 am]
how to change the color f...
by
KodeZwerg
[
Today
at 10:54:26 am]
Using KeyPress event, how...
by
KodeZwerg
[
Today
at 10:44:31 am]
Controlling the behavior ...
by
rvk
[
Today
at 08:31:48 am]
A "leisure" question on W...
by
Awkward
[
Today
at 07:59:12 am]
Big Numbers Math
by
Thaddy
[
Today
at 07:22:49 am]
Parquet?
by
Thaddy
[
Today
at 07:11:17 am]
Project fails on run but ...
by
jamie
[
Today
at 12:54:49 am]
Curling Pythagoras Tree: ...
by
Boleeman
[
Today
at 12:00:37 am]
Ribbon bar in Lazarus 3.2...
by
wp
[March 28, 2024, 11:29:17 pm]
how to search in rxmemory...
by
rcmz
[March 28, 2024, 10:19:54 pm]
Configure JCF messages
by
GordonFindlay
[March 28, 2024, 10:16:19 pm]
Poll: Watches and Display...
by
Martin_fr
[March 28, 2024, 10:15:08 pm]
Dialog ShowModal and an i...
by
d7_2_laz
[March 28, 2024, 09:51:39 pm]
JEDI error but unit compi...
by
Thaddy
[March 28, 2024, 09:30:33 pm]
Understanding and adjusti...
by
circular
[March 28, 2024, 09:09:56 pm]
Dynarray initialization p...
by
Thaddy
[March 28, 2024, 06:30:12 pm]
Zeos components. Had to c...
by
Fantablup
[March 28, 2024, 04:17:13 pm]
[SOLVED] Completion box s...
by
furious programming
[March 28, 2024, 04:12:26 pm]
[LAMW] How to create a ca...
by
af0815
[March 28, 2024, 03:48:16 pm]
Complex package installat...
by
wp
[March 28, 2024, 03:38:16 pm]
[SOLVED] Combined pointer...
by
CM630
[March 28, 2024, 02:48:41 pm]
a Unit problem?
by
Thaddy
[March 28, 2024, 01:56:12 pm]
« previous
next »
Print
Pages: [
1
]
Author
Topic: Error: Operator is not overloaded? (Read 1327 times)
Dan3468298
Full Member
Posts: 131
Error: Operator is not overloaded?
«
on:
August 04, 2020, 03:27:57 pm »
Specific is error is
Code: Pascal
[Select]
[+]
[-]
unit1
.
pas
(
158
,
24
)
Error
:
Operator is
not
overloaded
:
"
Set
Of
Char"
or
"Char"
Why can't I do an 'or' conditional?
Code: Pascal
[Select]
[+]
[-]
procedure
TForm1
.
txtHeightKeyPress
(
Sender
:
TObject
;
var
Key
:
char
)
;
begin
if
Key
in
[
'0'
..
'9'
]
or
Key
=
''
then
//allow user input
else
Key
:
=
#0
;
end
;
Logged
MacOS 10.15.5/Lazarus 2.0.10 Build 2020-07-07
JdeHaan
Full Member
Posts: 115
Re: Error: Operator is not overloaded?
«
Reply #1 on:
August 04, 2020, 03:31:50 pm »
You have to use parenthesis in this case:
if (Key in ['0'..'9']) or (Key = '') then
Logged
Dan3468298
Full Member
Posts: 131
Re: Error: Operator is not overloaded?
«
Reply #2 on:
August 04, 2020, 04:10:27 pm »
I had tried that too but it must have been an early morning brain fart typo. Thanks for the wake up!
Logged
MacOS 10.15.5/Lazarus 2.0.10 Build 2020-07-07
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
General
»
Error: Operator is not overloaded?
TinyPortal
© 2005-2018