Gets a style property from @context for the given state.
Note that not all CSS properties that are supported by GTK+ can be
retrieved in this way, since they may not be representable as #GValue.
GTK+ defines macros for a number of properties that can be used
with this function.
Note that passing a state other than the current state of @context
is not recommended unless the style context has been saved with
gtk_style_context_save().
When @value is no longer needed, g_value_unset() must be called
to free any allocated memory.
Gets a style property from @context for the given state.
Note that not all CSS properties that are supported by GTK+ can be retrieved in this way, since they may not be representable as #GValue. GTK+ defines macros for a number of properties that can be used with this function.
Note that passing a state other than the current state of @context is not recommended unless the style context has been saved with gtk_style_context_save().
When @value is no longer needed, g_value_unset() must be called to free any allocated memory.