Re: widget reuse

[muppet <scott asofyet org>]

On Dec 31, 2005, at 12:36 AM, Beast wrote:

> Just curious, why reuse widget is not works:
>
>    my $spacer = Gtk2::Label->new();
>    $spacer->set_size_request(30,0);
>
>    $hbox->pack_start($spacer,FALSE,FALSE,0);
>    $hbox->pack_start($vbbox,FALSE,FALSE,0);
>    $hbox->pack_start($spacer,FALSE,FALSE,0);
>
> error:
>
> Gtk-CRITICAL **: file gtktable.c: line 598 (gtk_table_attach):  
> assertion `child->parent == NULL' failed at

Widgets can have only one parent.

Creating an empty label set to 30 pixels wide to separate elements in  
an HBox is completely unnecessary, however, as you can specify  
padding (that's the last parameter to pack()) and spacing between  
children (e.g., $hbox->set_spacing(30)).


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