Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
General
»
Store procedure variables in a generic list
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: Store procedure variables in a generic list (Read 1687 times)
russdirks
New Member
Posts: 35
Store procedure variables in a generic list
«
on:
October 20, 2016, 07:41:33 pm »
I'm trying to store a list of (method) procedure variables using the generics fgl unit. The following code gives me the compiler error "Wrong number of parameters specified for call to <Procedure Variable>" / "Illegal qualifier". Is what I am trying to do possible?
Code: Pascal
[Select]
[+]
[-]
uses
fgl
;
type
TOnReceiveFn
=
Procedure
(
msg
:
string
)
of
object
;
TRecvListeners
=
specialize TFPGObjectList<TOnReceiveFn>
;
Logged
howardpc
Hero Member
Posts: 4144
Re: Store procedure variables in a generic list
«
Reply #1 on:
October 20, 2016, 08:27:44 pm »
You could use TMethodList in the unit LCLProc, which is already fully functional and debugged.
Logged
russdirks
New Member
Posts: 35
Re: Store procedure variables in a generic list
«
Reply #2 on:
October 20, 2016, 09:51:21 pm »
Thanks. That looks interesting. Couldn't find too much documentation though.
How do I add an instance of my TOnReceiveFn to the list? It's expecting a TMethod.
Logged
russdirks
New Member
Posts: 35
Re: Store procedure variables in a generic list
«
Reply #3 on:
October 20, 2016, 10:56:26 pm »
To answer my own question, TMethod can be directly cast to any procedure type, so I'm using something like this:
Code: Pascal
[Select]
[+]
[-]
uses
LCLProc
;
type
TOnReceiveFn
=
Procedure
(
msg
:
string
)
of
object
;
var
m_recvListeners
:
TMethodList
;
implementation
procedure
CSocket
.
addListener
(
recvfn
:
TOnReceiveFn
)
;
begin
m_recvListeners
.
Add
(
TMethod
(
recvfn
)
)
;
end
;
Logged
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
General
»
Store procedure variables in a generic list
TinyPortal
© 2005-2018