removed the need for RTTI/runtime type checking/dynamic_cast in glui. It is unnecessary to overhaul the build systems just for this feature. Replaced by upcasting virtual methods

if ( !dynamic_cast<GLUI_Rollout*>(this) &&
becomes
if ( !this->dynamicCastGLUI_Rollout() &&
etc.

Extras/glui/GL/glui.h

@@ -315,6 +315,13 @@ private:
 /************************************************************/
 
 class GLUI_Control;
+class	GLUI_Column;
+class	GLUI_Panel;
+class GLUI_FileBrowser;
+class GLUI_Scrollbar;
+class GLUI_Listbox;
+class GLUI_List;
+
 
 /**
  GLUI_Node is a node in a sort of tree of GLUI controls.
@@ -354,6 +361,56 @@ public:
 
     void dump( FILE *out, const char *name );
 
+		virtual GLUI_Panel*	dynamicCastGLUI_Panel()
+	{
+		return 0;
+	}
+
+	virtual GLUI_Column*	dynamicCastGLUI_Column()
+	{
+		return 0;
+	}
+	virtual GLUI_EditText*	dynamicCastGLUI_EditText()
+	{
+		return 0;
+	}
+	virtual GLUI_Rollout*	dynamicCastGLUI_Rollout()
+	{
+		return 0;
+	}
+
+	virtual GLUI_Tree*	dynamicCastGLUI_Tree()
+	{
+		return 0;
+	}
+
+	virtual GLUI_List*	dynamicCastGLUI_List()
+	{
+		return 0;
+	}
+
+	virtual GLUI_FileBrowser*	dynamicCastGLUI_FileBrowser()
+	{
+		return 0;
+	}
+
+	virtual GLUI_Scrollbar*	dynamicCastGLUI_Scrollbar()
+	{
+		return 0;
+	}
+
+	virtual GLUI_Listbox*	dynamicCastGLUI_Listbox()
+	{
+		return 0;
+	}
+
+	virtual GLUI_TreePanel*	dynamicCastGLUI_TreePanel()
+	{
+		return 0;
+	}
+	
+
+
 protected:
     static void add_child_to_control(GLUI_Node *parent,GLUI_Control *child);
     GLUI_Node *parent_node;
@@ -745,6 +802,9 @@ public:
 /*                                                          */
 /************************************************************/
 
+//get rid of the dynamic_cast/RTTI requirements, just do a virtual function
+
+
 /**
  All the GUI objects inherit from GLUI_Control: buttons,
  checkboxes, labels, edit boxes, scrollbars, etc.
@@ -843,6 +903,7 @@ public:
     void         hide_internal( int recurse );
     void         unhide_internal( int recurse );
 
+
     /** Return true if it currently makes sense to draw this class. */
     int          can_draw( void ) { return (glui != NULL && hidden == false); }
 
@@ -1073,6 +1134,10 @@ public:
     GLUI_Column( GLUI_Node *parent, int draw_bar = true );
     GLUI_Column( void ) { common_init(); }
 
+	virtual GLUI_Column*	dynamicCastGLUI_Column()
+	{
+		return this;
+	}
 protected:
     void common_init() {
         w            = 0;
@@ -1115,6 +1180,11 @@ public:
 
     void update_size( void );
 
+	virtual GLUI_Panel*	dynamicCastGLUI_Panel()
+	{
+		return this;
+	}
+
 protected:
     void common_init( void ) {
         w            = 300;
@@ -1167,6 +1237,11 @@ public:
     const char* get_file() { return file.c_str(); }
     void set_allow_change_dir(int c) { allow_change_dir = c; }
 
+	virtual GLUI_FileBrowser*	dynamicCastGLUI_FileBrowser()
+	{
+		return this;
+	}
+
 protected:
     void common_init() 
     {
@@ -1235,6 +1310,11 @@ public:
 
     void update_size( void );
 
+	virtual GLUI_Rollout*	dynamicCastGLUI_Rollout()
+	{
+		return 0;
+	}
+
 protected:
     void common_init() {
         currently_inside = false;
@@ -1316,6 +1396,11 @@ public:
         green = g;
         blue  = b;
     }
+
+	virtual GLUI_Tree*	dynamicCastGLUI_Tree()
+	{
+		return this;
+	}
 protected:
     void common_init()
     {
@@ -1403,6 +1488,10 @@ public:
     void            update_all( void );
     void            initNode(GLUI_Tree *temp);
     void            formatNode(GLUI_Tree *temp);
+	virtual GLUI_TreePanel*	dynamicCastGLUI_TreePanel()
+	{
+		return this;
+	}
 
 protected:
     int uniqueID( void ) { next_id++; return next_id - 1; }
@@ -1660,6 +1749,12 @@ public:
     // Deprecated constructor, only called internally
     GLUI_EditText( void ) { common_init(); }
 
+	virtual GLUI_EditText*	dynamicCastGLUI_EditText()
+	{
+		return this;
+	}
+
+
 protected:
     void common_init( void ) {
         h                     = GLUI_EDITTEXT_HEIGHT;
@@ -2161,6 +2256,11 @@ public:
     void set_object_callback(GLUI_CB cb=GLUI_CB(), GLUI_Control*obj=NULL)
     { obj_cb=cb; associated_object=obj; }
 
+	virtual GLUI_List*	dynamicCastGLUI_List()
+	{
+		return this;
+	}
+
 protected:
     void common_init()
     {
@@ -2288,6 +2388,11 @@ public:
     void set_object_callback(GLUI_CB cb=GLUI_CB(), GLUI_Control*obj=NULL)
     { object_cb=cb; associated_object=obj; }
 
+	virtual GLUI_Scrollbar*	dynamicCastGLUI_Scrollbar()
+	{
+		return this;
+	}
+
 protected:
     void common_init ( void );
     void common_construct(
@@ -2358,6 +2463,11 @@ public:
                   int id=-1, GLUI_CB callback=GLUI_CB() );
     GLUI_Listbox( void ) { common_init(); }
 
+	virtual GLUI_Listbox*	dynamicCastGLUI_Listbox()
+	{
+		return this;
+	}
+
 protected:
     /** Change w and return true if we need to be widened to fit the current item. */
     bool recalculate_item_width( void );