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Author Topic: [Answered] Any "windowed" TLabel?  (Read 870 times)

devEric69

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[Answered] Any "windowed" TLabel?
« on: September 21, 2021, 02:25:07 pm »
Hello,

In Delphi, there is \ was - from memory - a "windowed" TLabel with its THandle. So, the characteristic of such a control, is that it allows to select at runtime the caption-text with the mouse, like in a read-only TEdit. Is there a similar component in Lazarus\LCL or in a third-party package (AFAIK, the basic TLabel doesn't allow a runtime selection of its displayed caption-text).

Regards.
« Last Edit: September 22, 2021, 09:28:53 am by devEric69 »
use: Linux 64 bits (Ubuntu 20.04 LTS).
Lazarus version: 2.0.4 (svn revision: 62502M) compiled with fpc 3.0.4 - fpDebug \ Dwarf3.

Alextp

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Re: Any "windowed" TLabel?
« Reply #1 on: September 21, 2021, 03:06:09 pm »
https://wiki.freepascal.org/TStaticText
Not sure it supports the selection.

devEric69

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Re: Any "windowed" TLabel?
« Reply #2 on: September 21, 2021, 03:26:19 pm »
Not sure it supports the selection.

Thanks @Alextp. Indeed, it's a descendant of TWinControl. So, the equivalent of what I've described. However, at runtime, under Linux + LCLWidgesetType=gtk2, I cannot select it, in order to highlight the TStaticText's caption-text and to copy it inside the clipboard :( (did I miss anything?).

==> does anyone know such a TLabel visual control that allows this?
use: Linux 64 bits (Ubuntu 20.04 LTS).
Lazarus version: 2.0.4 (svn revision: 62502M) compiled with fpc 3.0.4 - fpDebug \ Dwarf3.

Zvoni

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Re: Any "windowed" TLabel?
« Reply #3 on: September 21, 2021, 03:41:39 pm »
Why not just use a TEdit with ReadOnly = True ?
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devEric69

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Re: Any "windowed" TLabel?
« Reply #4 on: September 21, 2021, 03:51:42 pm »
Well, that's what I'm doing at the moment (TEdit, with no border, and read-only mode). Now, I've this souvenir in Delphi. Hence my question (curiosity).
use: Linux 64 bits (Ubuntu 20.04 LTS).
Lazarus version: 2.0.4 (svn revision: 62502M) compiled with fpc 3.0.4 - fpDebug \ Dwarf3.

Remy Lebeau

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Re: Any "windowed" TLabel?
« Reply #5 on: September 21, 2021, 08:46:19 pm »
Now, I've this souvenir in Delphi. Hence my question (curiosity).

AFAIK, TStaticText in Delphi doesn't support selections, either.  It is just a thin wrapper around a Win32 STATIC control, which MSDN says:

About Static Controls

Quote
Although static controls are child windows, they cannot be selected.
Remy Lebeau
Lebeau Software - Owner, Developer
Internet Direct (Indy) - Admin, Developer (Support forum)

devEric69

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Re: Any "windowed" TLabel?
« Reply #6 on: September 22, 2021, 09:28:27 am »
Hello @Remy Lebeau,

Thank you for these technical precisions emanating from MS-Windows itself. Indeed, there doesn't seem to be a ready-made selectable label in Delphi (bad memory, sorry).
On the other hand, it seems not very complicated to automate the copy-paste of the caption inside the clipboard:

Code: Pascal  [Select][+][-]
  1. type
  2.   TcopyingLabel = class(TLabel)
  3.     private
  4.     protected
  5.         procedure Click; override;
  6.     public
  7.     published
  8.   end;
  9.  
  10. procedure Register;
  11.  
  12. implementation
  13.  
  14. uses Clipbrd;
  15.  
  16. procedure Register;
  17. begin
  18.      RegisterComponents('Standard', [TcopyingLabel]);
  19. end;
  20.  
  21. procedure TcopyingLabel.Click;
  22. begin
  23.      Clipboard.AsText:= Self.Caption;
  24.      { behaviorial click of inherited parent }
  25.      inherited Click;
  26. end;
« Last Edit: September 22, 2021, 09:32:37 am by devEric69 »
use: Linux 64 bits (Ubuntu 20.04 LTS).
Lazarus version: 2.0.4 (svn revision: 62502M) compiled with fpc 3.0.4 - fpDebug \ Dwarf3.

 

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