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Varargs Value Collection
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<!-- ##### SECTION Short_Description ##### -->
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Converting varargs to generic values
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<!-- ##### SECTION Long_Description ##### -->
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The macros in this section provide the varargs parsing support needed
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in variadic GObject functions such as g_object_new() or g_object_set().
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They currently support the collection of integral types, floating point
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<!-- ##### SECTION See_Also ##### -->
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<!-- ##### SECTION Stability_Level ##### -->
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<!-- ##### UNION GTypeCValue ##### -->
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A union holding one collected value.
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<!-- ##### MACRO G_VALUE_COLLECT ##### -->
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Collects a variable argument value from a va_list. We have to
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implement the varargs collection as a macro, because on some systems
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va_list variables cannot be passed by reference.
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@value: a #GValue return location. @value is supposed to be initialized
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according to the value type to be collected
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@var_args: the va_list variable; it may be evaluated multiple times
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@flags: flags which are passed on to the collect_value() function of
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the #GTypeValueTable of @value.
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@__error: a #gchar** variable that will be modified to hold a g_new()
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allocated error messages if something fails
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<!-- ##### MACRO G_VALUE_LCOPY ##### -->
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Collects a value's variable argument locations from a va_list.
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@value: a #GValue return location. @value is supposed to be initialized
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according to the value type to be collected
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@var_args: the va_list variable; it may be evaluated multiple times
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@flags: flags which are passed on to the lcopy_value() function of
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the #GTypeValueTable of @value.
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@__error: a #gchar** variable that will be modified to hold a g_new()
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allocated error messages if something fails
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<!-- ##### MACRO G_VALUE_COLLECT_FORMAT_MAX_LENGTH ##### -->
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The maximal number of #GTypeCValue<!-- -->s which can be collected for a
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docs/reference/gobject/tmpl/value_collection.sgml
