On Thu, May 10, 2012 at 04:45:09PM -0800, Christopher Howard wrote:
> Quick glib question here: I've been getting into glib's error reporting
> system and trying to integrate it into some code. (My code is using
> glib, but not GTK+ itself.) Overall it seems rather straightforward, but
> there was one point I was hoping for clarification on:
>
> In the g_set_error() parameters, the "domain" parameter is a GQuark.
> Does this mean that I am supposed to use something like
> "g_quark_from_string (MODULE_ERROR_DOMAIN_NAME)" for that parameter each
> time I call g_set_error?
>
> That would make sense, from what I've read in the GQuark part of the
> API. But I'm a little confused because the example given in the API for
> g_set_error() usage does not do this. (In the example, they just pass in
> some mysterious constant of unexplained origin.)
The mysterious constants follow the common usage pattern. For Bar in
package Foo, header:
#define FOO_BAR_ERROR foo_bar_error_quark()
GQuark foo_bar_error_quark(void) G_GNUC_CONST;
typedef enum {
FOO_BAR_ERROR_BAD_WHATEVER...
} FooBarError;
and code:
GQuark
foo_bar_error_quark(void)
{
return g_quark_from_static_string("foo-bar-error-quark");
}
You then do
g_set_error(error, FOO_BAR_ERROR, FOO_BAR_ERROR_BAD_WHATEVER, ...);
Yeti
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