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document value transformation.

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Thu Feb  7 12:07:06 2002  Tim Janik  <timj@gtk.org>

        * gobject/tmpl/generic_values.sgml: document value transformation.
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Tim Janik
2002-02-07 11:09:26 +00:00
committed by Tim Janik
parent 4e9073509f
commit a1c162e123
2 changed files with 20 additions and 8 deletions
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4
docs/reference/ChangeLog
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@@ -1,3 +1,7 @@
Thu Feb 7 12:07:06 2002 Tim Janik <timj@gtk.org>
* gobject/tmpl/generic_values.sgml: document value transformation.
Mon Feb 4 17:55:39 2002 Tim Janik <timj@gtk.org>
* gobject/tmpl/closures.sgml: doc common functions like ref/

24
docs/reference/gobject/tmpl/generic_values.sgml
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@@ -185,22 +185,30 @@ This is an internal function introduced mainly for C marshallers.
<!-- ##### FUNCTION g_value_type_transformable ##### -->
<para>
Check whether g_value_transform() is able to transform values
of type @src_type into values of type @dest_type.
</para>
@src_type:
@dest_type:
@Returns:
@src_type: Source type.
@dest_type: Target type.
@Returns: %TRUE if the transformation is possible, %FALSE otherwise.
<!-- ##### FUNCTION g_value_transform ##### -->
<para>
Tries to cast the contents of @src_value into a type apropriate
to store in @dest_value, e.g. to transform a %G_TYPE_INT value
into a %G_TYPE_FLOAT value. Performing transformations between
value types might incour precision lossage. Especially
transformations into strings might reveal seemingly arbitrary
results and shouldn't be relied upon for production code (such
as rcfile value or object property serialization).
</para>
@src_value:
@dest_value:
@Returns:
@src_value: Source value.
@dest_value: Target value.
@Returns: Whether a transformation rule was found and could be applied.
Upon failing transformations, @dest_value is left untouched.
<!-- ##### USER_FUNCTION GValueTransform ##### -->