New symbol part list control that shows previews and has a built in editor

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@529 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/symbol/control.hpp

@@ -72,7 +72,8 @@ class SymbolControl : public wxControl, public SymbolViewer {
   public: 
 	/// What parts are selected?
 	set<SymbolPartP> selected_parts;
-	SymbolShapeP     selected_shape; // if there is a single selection
+	SymbolPartP      highlight_part; ///< part the mouse cursor is over
+	SymbolShapeP     selected_shape; ///< if there is a single selection
 	
 	/// Parent window 
 	SymbolWindow* parent;