Help wanted about signals and slots

Hello,
I am new french programmer with kommander.

I have understand how to use signals and slots in studying
qt documentation 
but i don't know how to create a new slots in kommander. I
know how to use 
signals and slots that already exists in kommander.

In my program I want to connect an activated signal from a
combobox to a new 
slot in a textbrowser widget , to have a text in the
textbrowser wich is 
composed from the text of the combobox and an other text.

if I connect activated signals from combobox to settext slot
of textBrowser I 
set only text with text in combobox.

I want to have something with a certain sentence plus the
combobox text( plus 
perhaps an other sentence).

I think i must create a new slot.  With C language i suppose
it will be 
something like:
class Browser: public Qwidget
{
		Qstring text;
		...	
	public slot:
		void setText( Qstring t)
		{
			text="Hello, the text is now:" +t;
		}
		...
}

and in the main something like:
	...
	c=new ComboBox;
	b=new Browser;
	connect( &c, activated(), &b, setText());
	...

( Sorry but I very new to KDE, kommander and C programming,
and sorry for my 
verbose message)
Perhaps i must create a new slot in the kommander text
window. Please help me, 
I don't find any tutorial about this.

Email: fred.leconte2wanadoo.fr



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Hi,
I'll answer your question, and also the question you asked
when you thought 
you were answering your question, below.
On Thursday 17 April 2008 1:16:19 pm LECONTE Frédéric
wrote:
> Hello,
> I am new french programmer with kommander.
>
> I have understand how to use signals and slots in
studying qt documentation
> but i don't know how to create a new slots in
kommander. I know how to use
> signals and slots that already exists in kommander.
>
> In my program I want to connect an activated signal
from a combobox to a
> new slot in a textbrowser widget , to have a text in
the textbrowser wich
> is composed from the text of the combobox and an other
text.
>
> if I connect activated signals from combobox to settext
slot of textBrowser
> I set only text with text in combobox.

Sounds right.
>
> I want to have something with a certain sentence plus
the combobox text(
> plus perhaps an other sentence).
>
> I think i must create a new slot.  With C language i
suppose it will be
Slots would be created in C++ and of course they are native
to Qt, created my 
the met abject compier from the QOBJECT macro.
> something like:
> class Browser: public Qwidget
> {
> 		Qstring text;
> 		...
> 	public slot:
> 		void setText( Qstring t)
> 		{
> 			text="Hello, the text is now:" +t;
> 		}
> 		...
> }
>
> and in the main something like:
> 	...
> 	c=new ComboBox;
> 	b=new Browser;
> 	connect( &c, activated(), &b, setText());
> 	...

Whoa, you're creating new widgets there too. ;)
>
> ( Sorry but I very new to KDE, kommander and C
programming, and sorry for
> my verbose message)
> Perhaps i must create a new slot in the kommander text
window. Please help
> me, I don't find any tutorial about this.
>
> Email: fred.leconte2wanadoo.fr
>
There are plenty of examples of tutorials in the new package
in the menu 
Tools>Editor>examples.

Anyway there is a much easier answer than hacking Kommander
with new slots, 
which BTW would be problematic as your application was
specific and would 
mean a clutter of new slots...

1) Create a new script object
2) Connect your combo signal widgetTextChanged(QString&)
to the script 
object's execute(QString&)
3) In your script object you can get the current selection
of the combo, or 
use Self.item(0) for the first passed paramter to make up
your string
4) Use TextBrowser.setText(string) or if you are appending
or using some other 
edit slot call the slot directly with
TextBrowser.append(string)

You do need version 1.3 that shipped with KDE 3.5.9 to do
things like directly 
call the slot from a script.

If you're interested in helping me to hack Kommander please
contact me off 
list or on the kommander-devel list.


-- 
Eric Laffoon
Project Lead - kdewebdev module
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