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Author
Topic: Hide Caret (TRichMemo, TKMemo) (Read 5119 times)
tudi_x
Hero Member
Posts: 532
Hide Caret (TRichMemo, TKMemo)
«
on:
August 04, 2017, 10:50:36 am »
hi All,
cross-platform i am trying to hide the caret in a TRichMemo instance with no luck as per the below code.
please advise what i am missing.
thank you
Code: Pascal
[Select]
[+]
[-]
type
TForm1
=
class
(
TForm
)
RichMemo1
:
TRichMemo
;
procedure
FormCreate
(
Sender
:
TObject
)
;
...
procedure
TForm1
.
FormCreate
(
Sender
:
TObject
)
;
var
p
:
TPoint
;
begin
p
.
x
:
=
-
1
;
p
.
y
:
=
-
1
;
RichMemo1
.
Clear
;
RichMemo1
.
ReadOnly
:
=
true
;
RichMemo1
.
CaretPos
:
=
p
;
end
;
«
Last Edit: October 19, 2017, 12:18:30 pm by tudi_x
»
Logged
Lazarus 2.0.2 64b on Debian LXDE 10
tudi_x
Hero Member
Posts: 532
Re: Hide Caret (TRichMemo, TKMemo)
«
Reply #1 on:
October 19, 2017, 12:19:41 pm »
Hi All,
how does one hide the caret in Memo controls (cross platform and with no other control to lose focus)? read only looks like not enough.
i see in Delphi there is a HideCaret(<control>) function.
thank you
«
Last Edit: October 19, 2017, 01:06:27 pm by tudi_x
»
Logged
Lazarus 2.0.2 64b on Debian LXDE 10
tudi_x
Hero Member
Posts: 532
Re: Hide Caret (TRichMemo, TKMemo)
«
Reply #2 on:
October 19, 2017, 01:43:11 pm »
looks like for TKMemo caret is not visible:
a. when the control does not have focus
b. when TKMemo.SelEnd < 0, safest:
Code: Pascal
[Select]
[+]
[-]
TKMemo
.
SelEnd
:
=
-
1
;
TKMemo
.
SelStart
:
=
0
;
«
Last Edit: October 19, 2017, 01:53:55 pm by tudi_x
»
Logged
Lazarus 2.0.2 64b on Debian LXDE 10
RAW
Hero Member
Posts: 868
Re: Hide Caret (TRichMemo, TKMemo)
«
Reply #3 on:
October 19, 2017, 03:25:31 pm »
There are several ways to do this, this one is very easy, but don't ask me if this is a crossplatform way...
Play around with this...
Code: Pascal
[Select]
[+]
[-]
UNIT
Unit1
;
{$MODE OBJFPC}{$H+}{$J-}
Interface
USES
Classes
,
SysUtils
,
Forms
,
LCLIntf
,
Controls
,
StdCtrls
,
LMessages
;
TYPE
TMyMemo
=
Class
(
TMemo
)
PROTECTED
Procedure
WMSetFocus
(
Var
MSG
:
TLMessage
)
;
Message LM_SETFOCUS
;
End
;
TYPE
TForm1
=
Class
(
TForm
)
Procedure
FormCreate
(
Sender
:
TObject
)
;
PRIVATE
Memo
:
TMyMemo
;
End
;
VAR
Form1
:
TForm1
;
Implementation
{$R *.LFM}
Procedure
TMyMemo
.
WMSetFocus
(
var
MSG
:
TLMessage
)
;
Begin
HideCaret
(
Handle
)
;
End
;
Procedure
TForm1
.
FormCreate
(
Sender
:
TObject
)
;
Begin
Memo
:
=
TMyMemo
.
Create
(
Self
)
;
Memo
.
Align
:
=
alClient
;
Memo
.
Font
.
Size
:
=
20
;
Memo
.
ReadOnly
:
=
True
;
Memo
.
Text
:
=
'This is a test...'
;
Memo
.
Parent
:
=
Self
;
End
;
END
.
Logged
Windows 7 Pro (x64 Sp1) & Windows XP Pro (x86 Sp3).
tudi_x
Hero Member
Posts: 532
Re: Hide Caret (TRichMemo, TKMemo)
«
Reply #4 on:
October 23, 2017, 10:48:55 am »
thank you RAW.
it does not work on Linux MINT.
looks like only TKMemo can be used cross platform.
Logged
Lazarus 2.0.2 64b on Debian LXDE 10
tk
Sr. Member
Posts: 361
Re: Hide Caret (TRichMemo, TKMemo)
«
Reply #5 on:
November 07, 2017, 08:58:55 pm »
In KMemo check/include eoDisableCaret option in TKMemo.Options.
This will just disable the caret from appearing on screen, other functionality (writing, selections) remains the same.
Logged
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