Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
General
»
Detecting Click on a Form.
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
Generics - correct syntax
by
Blaazen
[
Today
at 05:07:02 pm]
InstallAware Using Lazaru...
by
msintle
[
Today
at 05:03:08 pm]
Lazarus for Windows on aa...
by
msintle
[
Today
at 04:42:43 pm]
v3.99 code completion que...
by
440bx
[
Today
at 04:30:30 pm]
I just released a commerc...
by
Zoran
[
Today
at 04:23:11 pm]
Forum slow
by
VisualLab
[
Today
at 03:57:24 pm]
FpDebug breakpoint on "be...
by
440bx
[
Today
at 02:59:22 pm]
Database standards OR Am ...
by
gidesa
[
Today
at 02:16:21 pm]
Registers dialog - regist...
by
ccrause
[
Today
at 02:10:31 pm]
HeapTrc not showing line ...
by
dbannon
[
Today
at 01:17:33 pm]
Converting a string/index...
by
wp
[
Today
at 01:14:55 pm]
AI, NLP and CAI: Text Gen...
by
Dzandaa
[
Today
at 12:51:20 pm]
Access violation when ope...
by
JuhaManninen
[
Today
at 12:31:34 pm]
[solved] how to get class...
by
Thaddy
[
Today
at 12:18:15 pm]
insert select from - with...
by
Nicole
[
Today
at 11:39:34 am]
How to: create DLL file f...
by
paule32
[
Today
at 11:17:12 am]
Offical launch of the 1 B...
by
Gustavo 'Gus' Carreno
[
Today
at 11:14:40 am]
Step-into the field sette...
by
ginoo
[
Today
at 07:50:24 am]
Does anyone know why thes...
by
TYDQ
[
Today
at 05:24:32 am]
Arabic text, problem on L...
by
Zaher
[
Today
at 03:29:16 am]
Demoscene The Champs Crac...
by
Gigatron
[
Today
at 01:05:16 am]
How to use the Event Log?
by
n7800
[
Today
at 12:47:25 am]
Access violation when re-...
by
TRon
[April 19, 2024, 11:44:51 pm]
Poll: Watches and Display...
by
440bx
[April 19, 2024, 07:13:51 pm]
Who is Indy mattias?
by
paweld
[April 19, 2024, 04:17:53 pm]
« previous
next »
Print
Pages: [
1
]
Author
Topic: Detecting Click on a Form. (Read 1719 times)
DenPit5
New Member
Posts: 21
Detecting Click on a Form.
«
on:
December 07, 2018, 01:13:51 pm »
I need to be able to click on a Form and get the x & y coordinates of a click. I realise they must be somehow available in the ONClick event but don't know how they are presented there. Can Anyone Help. ?? Please !!
Logged
BSaidus
Hero Member
Posts: 545
lazarus 1.8.4 Win8.1 / cross FreeBSD
Re: Detecting Click on a Form.
«
Reply #1 on:
December 07, 2018, 01:21:11 pm »
Use the OnMouseDowne event that contain X and Y coordinate.
Code: Pascal
[Select]
[+]
[-]
procedure
TForm1
.
FormMouseDown
(
Sender
:
TObject
;
Button
:
TMouseButton
;
Shift
:
TShiftState
;
X
,
Y
:
Integer
)
;
begin
end
;
Logged
lazarus 1.8.4 Win8.1 / cross FreeBSD
dhukmucmur vernadh!
sash
Sr. Member
Posts: 366
Re: Detecting Click on a Form.
«
Reply #2 on:
December 07, 2018, 02:40:45 pm »
Also available as @Mouse.CursorPos@ anywhere in Application.
Code: Pascal
[Select]
[+]
[-]
procedure
TForm1
.
FormClick
(
Sender
:
TObject
)
;
var
mp
:
TPoint
;
begin
mp
:
=
Mouse
.
CursorPos
;
//in screen coordinates
mp
:
=
{AnyControl.}
ScreenToClient
(
Mouse
.
CursorPos
)
;
//in form (or any other control coordinates)
ShowMessageFmt
(
'click: [%d:%d]'
,
[
mp
.
x
,
mp
.
y
]
)
;
end
;
Logged
Lazarus 2.0.10 FPC 3.2.0 x86_64-linux-gtk2 @
Ubuntu
20.04
XFCE
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
General
»
Detecting Click on a Form.
TinyPortal
© 2005-2018