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<H1>[Gtk-sharp-list] Agressive ref-couting.
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<B>Miguel de Icaza
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<A HREF="mailto:miguel%40ximian.com"
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TITLE="[Gtk-sharp-list] Agressive ref-couting.">miguel@ximian.com
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<I>11 Sep 2002 22:24:39 -0400</I>
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<PRE>Hello!
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><i> > The following patch makes mPhoto work again, when GC happens, we are
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</I>><i> > destroying objects that we did not ref previously.
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</I>><i>
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</I>><i> I'm not sure this is the solution. We shouldn't need to ref every
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</I>><i> object, because we should own the vast majority of handles that are
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</I>><i> returned by native methods. Is this a situation where you are using
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</I>><i> methods with "const" returns in the native library?
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</I>
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The problem happens with GCs and Styles:
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static Gdk.GC EnsureGC (IntPtr raw) {
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if (raw == IntPtr.Zero)
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return null;
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Gdk.GC ret = (Gdk.GC) GLib.Object.GetObject (raw);
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if (ret == null)
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ret = new Gdk.GC (raw);
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return ret;
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}
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[DllImport("gtksharpglue")]
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static extern IntPtr gtksharp_gtk_style_get_white_gc (IntPtr style);
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public Gdk.GC WhiteGC {
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get { return EnsureGC (gtksharp_gtk_style_get_white_gc(Handle));
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}
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The problem is that we are wrapping an object which is owned somewhere
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else.
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Miguel
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