-const static char* WDG_SELECTOR = "selector";
-const static char* WDG_CHOICE = "choice";
-
-//Specific widget containers
-const static char* WDG_POINT_SELECTOR = "point_selector";
-const static char* WDG_POINT2D_DISTANCE = "point2ddistance";
-
-const static char* WDG_FEATURE_SELECTOR = "feature_selector";
-const static char* WDG_FEATURE_OR_ATTRIBUTE_SELECTOR = "feature_or_attribute_selector";
-const static char* WDG_DOUBLEVALUE_EDITOR = "doublevalue_editor";
-
-//Common Widget's or Feature's Properties