On 17 Mar 2007, at 11:20, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
> I rebuilded the code in a new project (just in case) but the
> problem still occurs.
> I'm afraid there is a serious bug with XP pro. May be the bug
> occurs just with the pro version of XP.... I really don't know.
> Does someone as any clue or idea ?
I don't have a usable XP setup to test on here, but I tried your code
on my Mac and it seems mostly good.
BUT...
It looks as if (at least on OSX, anyway) that calling hide on a
Fl_Group widget (or by extension an Fl_Window) will attempt to call
hide() on any children of the group - *even if they have already been
deleted*. At least, that's what gdb appears to be showing me... Your
problem may be a variation of that issue?
Anyhow - the revised version of your code addresses that issue by
using remove() to take the widget out of its parent group before
deleting it.
That may be a solution for you? It is probably a Good Thing to do
anyway, I would suggest.
Try my code, see how you get on.
----------
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Box.H>
class MyClass : public Fl_Window {
Fl_Button *butt;
Fl_Button *butt2;
Fl_Box *box[99]; // should be a list, not an array but...
int iBox; // "list" pointer...
void my_callback(Fl_Widget *w)
{
begin();
box[iBox] = new Fl_Box(10, 40, 100, 100);
box[iBox]->box(FL_DOWN_BOX);
box[iBox]->color((Fl_Color) iBox);
iBox ++;
end();
redraw();
}
void my_callback2(Fl_Widget *w)
{
int idx = iBox - 1;
if((idx >= 0) && (box[idx]))
{
box[idx]->hide();
remove(box[idx]);
Fl::delete_widget(box[idx]);
box[idx] = (Fl_Box *)0;
iBox --;
redraw();
}
}
static void my_static_callback(Fl_Widget *w, void *data) {
((MyClass*)data)->my_callback(w);
}
static void my_static_callback2(Fl_Widget *w, void *data) {
((MyClass*)data)->my_callback2(w);
}
public:
MyClass(int X, int Y):Fl_Window(X,Y) {
butt = new Fl_Button(5,10,90,25,"Display");
butt2 = new Fl_Button(105,10,90,25,"Clear");
butt->callback(my_static_callback, (void*)this);
butt2->callback(my_static_callback2, (void*)this);
iBox = 0;
box[0] = (Fl_Box *)0;
end();
}
};
int main(int argc, char **argv) {
MyClass myclass(200,200);
myclass.show(argc, argv);
return Fl::run();
}
/* End of File */
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