Also I propose add this function to Fl_Widget:
/** Returns a pointer to the root parent widget.
Usually this is a Fl_Window.
\retval NULL if the widget has no root parent
*/
Fl_Group* root_parent() const;
Fl_Group* Fl_Widget::root_parent() const {
Fl_Group *result = parent();
while(result) {
if(!result->parent()) return result;
result = result->parent();
}
return NULL;
}
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