On Fri, 25 Jan 2013 09:13:15 -0600
Moses McKnight <[email protected]> wrote:
> void gen_license_cb(Fl_Widget *w, void *ptr)
> {
> licgen generator;
> generator.make_window();
> generator.hub_id_input->type(FL_INT_INPUT);
> generator.hub_id_input->precision(0);
> generator.hub_id_input->value(hub_id);
> generator.window->show();
> }
>
> I think the object is being deleted after the show() even though the
> window is still there and active.
>
> What is the best way to keep the object around until the window is closed?
Since I now use mainly Python, my C++ is a bit rusty, but...
Other than a complete reorganisation of the code to move generator
to global scope in order to avoid its destruction and memory reuse
at the end of the gen_license_cb() scope, you could possibly use
"static licgen generator;" instead, or do something like:
void gen_license_cb(Fl_Widget *w, void *ptr)
{
static licgen* pGenerator = 0;
if (pGenerator == 0) {
pGenerator = new licgen();
}
pGenerator->make_window();
pGenerator->hub_id_input->type(FL_INT_INPUT);
pGenerator->hub_id_input->precision(0);
pGenerator->hub_id_input->value(hub_id);
pGenerator->window->show();
}
But of course there is no way to release the resources used by the
"static licgen generator;" in the first case, nor any direct way of
calling "delete pGenerator;" in the second.
D.
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