On Wed, 2010-04-21 at 12:33 +0200, Oliver Bandel wrote:
> Example:
>
>
> ==============================================
> /*****************************************************************************/
> /* public functions
> ********************************************************/
>
> GimpContext *
> gimp_context_new (Gimp *gimp,
> const gchar *name,
> GimpContext *template)
> {
> GimpContext *context;
>
> g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
> g_return_val_if_fail (name != NULL, NULL);
> g_return_val_if_fail (! template || GIMP_IS_CONTEXT (template), NULL);
>
> context = g_object_new (GIMP_TYPE_CONTEXT,
> "name", name,
> "gimp", gimp,
> NULL);
>
> if (template)
> {
> context->defined_props = template->defined_props;
>
> gimp_context_copy_properties (template, context,
> GIMP_CONTEXT_ALL_PROPS_MASK);
> }
>
> return context;
> }
> ==============================================
>
> The test
> if( template )
> makes only sense, if you can be sure that uninitialzed values
> will definitely be NULL.
"template" isn't uninitialized here. It is a parameter passed to
gimp_context_new() and it may either be NULL or a pointer to a valid
GimpContext object. This is even checked right at the beginning of the
function.
Sven
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