StaticText Visual indication on focus?
lazarus / 10-Designer

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Never · 2014-10-14 21:40

is there a visual indication when statictext is focused? (focused
rect?)
added several controls on a form and a statictext

there is a tabstop property for statictext  i set it to true but
nothing
i miss something?

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taazz · 2014-10-14 21:46

static text can't be focused so no focus line can be drawn, I think
that the focusedControl property is there to allow you to select which
control receives the focus when you tab in the statictext.

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Never · 2014-10-14 21:53

yes there is a property focusedcontrol
so the tabstop property is there to serve the fousedcontrol
and not to [Allow the user to navigate to this control]
Thank you  @taazz

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ChrisF · 2014-10-15 01:08

AFAIK, the fact that a text can be focused has nothing to do with the
FocusControl property.


At least in Windows, text controls can be focused with tabulation keys
(TAB or CTRL-TAB): using the WS_TABSTOP style for LTEXT/RTEXT/CTEXT
controls. This is not bound to Delphi or Lazarus, but to Windows.

Delphi has just reproduced this behavior (so do Lazarus) with the
TabStop property: http://docwiki.embarcadero.com/Libraries/XE7/en/Vcl.
StdCtrls.TStaticText.TabStop

I admit it's a bit weird that nothing is visible when a text is
focused, but anyway it's just working like this : texts get focus
without any visible effect. BTW, there are not the only ones:
Groupboxes, for instance, have the same behavior.


On another way, the FocusControl property is specific to
Delphi/Lazarus-FreePascal (i.e. it's not related to Windows). It just
set the focus to the desired control, if you press the mnemonic
present in the caption of the concerned statictext/label.


So, to make it short:

- Tabstop: text can receive the focus with the tabulation keys (no
visual indication),

- FocusControl: set the focus to another control, if text mnemonic
(Alt+Key) is pressed.

** EDIT** That's also why Labels have a FocusControl property, but not
TabStop/TabORder ones: they are not 'text controls' from the Windows
point of view.