[..]
so I wrote this just to see if it
> works.. seems to:
Yah, I should have included a test case, sorry.
Add this to what you have:
void toggle(Fl_Widget*, void* v)
{
Fl_Widget* w = static_cast<Fl_Widget*>(v);
if(w->color() == FL_RED) w->color(FL_GREEN);
else w->color(FL_RED);
w->parent()->redraw();
}
..
b1->callback(toggle, grp);
sb1->callback(toggle, sw);
Now, on my system, Button1 toggles the group color; Subbutton1
does nothing.
>
> In your case, what is causing the group to be redrawn;
> a change to the contents of the group after the window was opened,
> or some such?
Basically my class, derived from Fl_Group, in it's draw(),
updates the contents of the subwindow, then
calls Fl_Group::draw(). Which fails to draw the subwindow.
Having discovered the cause, it's easy enough to work around.
It's just surprising, at least to me.
Best,
Stan
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