Can't customize ListboxTextItem

[Rackle]

A slightly different interface would be to have each line consist of

• a label describing the game action, potentially with a tooltip containing a detailed explanation
• a pushbutton for the first key mapping
• a pushbutton for the second key mapping
• a scrollbar to scroll through the various entries

Clicking on either pushbuttons would open a dialog to allow the user to specify the keyboard key, either a single key or a combination with shift, ctrl, and alt. Once the user has specified the keyboard keys to activate the action you can display those keys as the text of the pushbutton.

The dialog could contain checkboxes to specify whether the shift, ctrl, and alt keys should differentiate between the left and right keyboard keys. The dialog could also contain three pushbuttons: ok (accept the key combination), cancel (do not change anything), and clear (to unmap this game action).

Have a look at CEGUIBuildDialog for an example application that uses a scrollbar to change the data displayed on a layout similar to what I've described above. Just skip the code that animates an Ogre mesh and concentrate on the scrollbar.

[Chaos]

I may be blind but, I can't find the code which shows how the scrollbar works.

Can you tell me where exactly this section is or describe it to me how this scrollbar works?

Thank you!

[Rackle]

The trick was to search for "Scrollbar" which reveals scrollbar->subscribeEvent(Scrollbar::EventScrollPositionChanged, Event::Subscriber(&DialogBuild::handleScrollChanged, this)); leading to

Code: Select all

bool DialogBuild::handleScrollChanged(const CEGUI::EventArgs& args)
   {
   int newScrollOffset;

   // This event gets thrown when the scroll bar position moves even a little bit,
   // and may not cause a change in the scrollOffset.
   // Only do an update if scrollOffset actually changes.
   newScrollOffset = (int)scrollbar->getScrollPosition() * DIALOG_BUTTON_COLUMNS;
   if (newScrollOffset != scrollOffset)
      {
      scrollOffset = newScrollOffset;
      PopulateButtons();
      }
   return true;
   }


and DialogBuild::PopulateButtons(void) which is where the "magic" happens. Basically the screen contains static/unchanging items that appear to scroll through a list because of the accompanying scrollbar (it's simpler to look at the provided image to understand this textual description).

[Chaos]

Yeah, I do understand that.

But how do I have to arrange the widgets that a scrollbar can move statictext- and buttonelements?

Just inserting them in the same window doesn't work, does it?

Bye, Chaos

[Rackle]

One important keyword in my previous post is the word appear. None of the widgets actually move. They only appear to move because you change their contents. I sent you to that page because we're missing a concrete example of a scrollbar in action.

I've wikied a pseudo multi-column listbox example. Hopefully this will clear up any questions.