Re: float params of a gobject

[David Nečas (Yeti) <yeti physics muni cz>]

On Mon, Jul 10, 2006 at 12:45:46PM -0300, Daniel Alonso wrote:
> Hi, I'm trying to define a gobject class with a floating number
> property. In the init class procedure I define the property the
> following way:
>
>       param_spec = g_param_spec_float
>               ("width" /* name */,
>                _("Icon Width") /* nick */,
>                _("The width of the svg icon") /* blurb */,
>                G_MINFLOAT /* minimum */,
>                G_MAXFLOAT /* maximum */,
>                0.0 /* default_value */,
>                (GParamFlags)(G_PARAM_READABLE | G_PARAM_WRITABLE));
>       g_object_class_install_property (g_object_class,
>                                       PROP_WIDTH,
>                                       param_spec);
>
> This compiles fine, but when running the test program it raises a glib
> exception:
>
> (test:5073): GLib-GObject-CRITICAL **: g_param_spec_float: assertion
> `default_value >= minimum && default_value <= maximum' failed
>
> (test:5073): GLib-GObject-CRITICAL **: g_object_class_install_property:
> assertion `G_IS_PARAM_SPEC (pspec)' failed
>
> But default value 0.0 is equal G_MINFLOAT and lesser than G_MAXFLOAT,
> isn't it? 

G_MINFLOAT is the minimum *positive* value a float can take,
so it's larger than 0.0.

Yeti


--
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