On Mon, Sep 30, 2024 at 06:40:42AM +0000, Heime wrote:
> 
> 
> On Monday, September 30th, 2024 at 4:41 PM, tomas@tuxteam.de <tomas@tuxteam.de> wrote:

[...]

> I understand.  The expression (display-message my-message "Info Buffer") is used 
> to display the contents of a buffer (dbuffer) in a window.
> 
> The display-message function returns the window in which the buffer is displayed. 
> Because of the last call. Because it evaluates the expression (display-buffer dbuffer),
> which returns the window that is displaying the buffer dbuffer.
> 
> Then the correct way is 
> 
> 'action (lambda (button)
>           (display-message my-message "Info Buffer"))

Bingo.

> Does one perform any operation with the button argument in the 
> declared function or lambda ?

I don't understand that question. Who is "one" and what do you mean
by "any operation" [1]?

Cheers
[1] https://able2know.org/topic/252066-1

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t