> PS: just for the record I tried what Greg told me to do and I
> still getting
> that error.. And I didn't really understand how this parent()
> method is
> suppose to work. How can I create an hierarchy of widgets? Using the
> children() method? Or current()->add() method? I read the
> manual but it is not clear to me..
There are certain widget types that are intended to act as "containers"
for other widgets, e.g Fl_Group and Fl_Window for example.
When you add() a widget to such a container, then it inherently becomes
a "child" of that "parent" widget.
So if you create a window then add a button to it...
Fl_Window main_win(...);
Fl_Button my_btn(...);
main_win->add(my_btn);
Then if you were later to do:
Fl_Group *get_parent = my_btn->parent();
The returned pointer "get_parent" here will actually be a pointer to
"main_win" (Fl_Window is derived form Fl_Group, so they are the same in
this case...)
So you can then do...
(Fl_Window *)get_parent->some_other_function();
And so on...
http://www.fltk.org/doc-1.1/Fl_Widget.html#Fl_Widget.parent
Similarly, if you have a container widget, you can ask it how many
childern it has...
http://www.fltk.org/doc-1.1/Fl_Group.html#Fl_Group.children
Or even get a list of them...
http://www.fltk.org/doc-1.1/Fl_Group.html#Fl_Group.child
Or search through that list for a specific widget...
http://www.fltk.org/doc-1.1/Fl_Group.html#Fl_Group.find
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