On Mar 21, 2007, at 6:40 PM, <[EMAIL PROTECTED]>  
<[EMAIL PROTECTED]> wrote:

> class ChildWnd : public Fl_Double_Window
> {
>     public:
>
>       ChildWnd(int x, int y, int w, int h, const char *l):
>       Fl_Double_Window(x, y, w, h, l)
>       {
>        set_non_modal();
^^ child windows can never be free, modal, or non_modal. Don't cal  
this for a child window
>        clear_border();
^^ child windows have no decoration, only a box type. Don't cal this  
either
>        box(FL_UP_BOX);

It look like you are creating an MDI interface? MDI is not supported  
by FLTK.

Matthias

----
http://robowerk.com/


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