Anybody know what's the use of addTab?

[tjuhzj]

Hi,everybody!

I am not able to make sense of the usage of addTab()? when i add a tab on the screen , there is no element displayed!! Originally, I wrongly thought it would like the JPanel in java.

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gui::IGUITab* tabContainer = guienv->addTab(core::rect<s32>(50,10,210,180));

anybody could make clear this problem? thank you in advance.
________
V10

[Saku]

Try looking through the examples included in irrlicht. Especially the Mesh Viewer example, that should give you a good idea of how they're used.

[tjuhzj]

I am afraid you misunderstand my question.

There are two version addTab(); What i means is IGUIEnvironment->addTab() but not IGUITabControl->addTab();


Thanks anyway!:-)
________
V8

[vitek]

RTFM; From IGUIEnvironment.h...

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//! Adds tab to the environment. 
/**  You can use this element to group other elements. This is not used for creating tabs on tab controls,
 please use IGUITabControl::addTab() for this instead.
 \param rectangle is the position of the tab.
 \param parent is the parent item of the element. E.g. a window. Set it to 0 to place the tab directly in the environment.
 \param id is a s32 to identify the tab. */
virtual IGUITab* addTab(const core::rect<s32>& rectangle, IGUIElement* parent=0, s32 id=-1) = 0;

Then look at the source code. From IGUITabControl.h...

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//! A tab, onto which other gui elements could be added.
class IGUITab : public IGUIElement
{
public:

   //! constructor
   IGUITab(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle)
      : IGUIElement(EGUIET_TAB, environment, parent, id, rectangle) {}

   //! destructor
   virtual ~IGUITab() {};

   //! Returns number of tab if in tabcontrol.
   /** Can be accessed later IGUITabControl::getTab() by this number. */
   virtual s32 getNumber() = 0;

   //! sets if the tab should draw its background
   virtual void setDrawBackground(bool draw=true) = 0;

   //! sets the color of the background, if it should be drawn.
   virtual void setBackgroundColor(video::SColor c) = 0;
};

A tab is just an empty container for other gui controls. If you want to make it visible, you have to tell it so by calling setDrawBackground() and maybe setBackgroundColor().

Travis