Game chat box

The following .layout defines a FrameWindow containing two widgets; a Listbox in the upper region for chat history and an Editbox at the lower region for text input.

chat.layout

<?xml version="1.0" ?>
<GUILayout>
<Window Type="TaharezLook/FrameWindow" Name="/Chat">
	<Property Name="Position" Value="x:0.0 y:0.0" />
	<Property Name="Size" Value="w:0.25 h:0.25" />
	<Property Name="Alpha" Value="0.8" />
	<Window Type="DefaultWindow" Name="/Chat/Wnd"> 
		<Property Name="Alpha" Value="0.8" />
		<Property Name="Position" Value="x:0.0 y:0.00" />
		<Property Name="Size" Value="w:1 h:1" />
		<Window Type="TaharezLook/Listbox" Name="/Chat/Wnd/List">
			<Property Name="Position" Value="x:0.0 y:0.1" />
			<Property Name="Size" Value="w:1 h:0.77" />
		</Window>
	 	<Window Type="TaharezLook/Editbox" Name="/Chat/Wnd/Edit" >
			<Property Name="Position" Value="x:0.01 y:0.87" />
			<Property Name="Size" Value="w:0.98 h:0.12" />
  		</Window>
	</Window>
</Window>
</GUILayout>

InitialiseChatBox()

// A helper variable
CEGUI::WindowManager& winMgr = CEGUI::WindowManager::getSingleton();

// Load the chat layout and add it to the GUI sheet
mMainWindow = winMgr.loadWindowLayout("chat.layout");
if (mMainWindow)
    CEGUI::System::getSingleton().getGUISheet()->addChildWindow(mMainWindow);

// The only event we're interested is when the <ENTER> key is pressed
// This will call upon the EditTextAccepted() function to add the text to the Listbox
CEGUI::Window* editBox = winMgr.getWindow("/Chat/Wnd/Edit");
editBox->subscribeEvent(CEGUI::Editbox::EventTextAccepted, CEGUI::Event::Subscriber(&ChatWidget::EditTextAccepted, this)); 

EditTextAccepted()

bool ChatWidget::EditTextAccepted(const CEGUI::EventArgs& args)
{
	// Variables for the Listbox and the Editbox
	mEditBox = static_cast<CEGUI::Editbox*> (winMgr.getWindow("/Chat/Wnd/Edit"));
	mListBox = static_cast<CEGUI::Listbox*> (winMgr.getWindow("/Chat/Wnd/List"));

	// Add the Editbox text to the Listbox
	CEGUI::ListboxTextItem* item = new CEGUI::ListboxTextItem(mEditBox->getText());
	mListBox->addItem ( item );

	// Scroll the Listbox entries such that the new text is visible
	mListBox->ensureItemIsVisible(mListBox->getItemCount());

	// Clear the text in the Editbox
	mEditBox->setText("");

	return true;
}

TODO: Create a new version that handles different fonts, both font names (such as Arial, Times New Roman) and font sizes (such as 8, 10, 12). This will be done by adding a new widget within a looknfeel (such as TaharezLook.looknfeel). The main feature will be that the Editbox's height will rely on the LineSpacing value of the font.