IGUIEnvironment::hasFocus can work with a const pointer.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4755 dfc29bdd-3216-0410-991c-e03cc46cb475

include/IGUIEnvironment.h

@@ -105,7 +105,7 @@ public:
 	/** \param element Pointer to the element which is tested.
 	\param checkSubElements When true and focus is on a sub-element of element then it will still count as focused and return true
 	\return True if the element has focus, else false. */
-	virtual bool hasFocus(IGUIElement* element, bool checkSubElements=false) const = 0;
+	virtual bool hasFocus(const IGUIElement* element, bool checkSubElements=false) const = 0;
 
 	//! Returns the current video driver.
 	/** \return Pointer to the video driver. */

source/Irrlicht/CGUIEnvironment.cpp

@@ -331,7 +331,7 @@ bool CGUIEnvironment::removeFocus(IGUIElement* element)
 
 
 //! Returns whether the element has focus
-bool CGUIEnvironment::hasFocus(IGUIElement* element, bool checkSubElements) const
+bool CGUIEnvironment::hasFocus(const IGUIElement* element, bool checkSubElements) const
 {
 	_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
 	if (element == Focus)
@@ -941,7 +941,7 @@ void CGUIEnvironment::writeGUIElement(io::IXMLWriter* writer, IGUIElement* node)
 	{
 		if (!(*it)->isSubElement())
 		{
-			writer->writeLineBreak();			
+			writer->writeLineBreak();
 			writeGUIElement(writer, (*it));
 		}
 	}

source/Irrlicht/CGUIEnvironment.h

@@ -190,7 +190,7 @@ public:
 	virtual bool removeFocus(IGUIElement* element) _IRR_OVERRIDE_;
 
 	//! Returns if the element has focus
-	virtual bool hasFocus(IGUIElement* element, bool checkSubElements=false) const _IRR_OVERRIDE_;
+	virtual bool hasFocus(const IGUIElement* element, bool checkSubElements=false) const _IRR_OVERRIDE_;
 
 	//! Returns the element with the focus
 	virtual IGUIElement* getFocus() const _IRR_OVERRIDE_;