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docs: Document the versioning macros

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Emmanuele Bassi 2012-02-27 16:47:53 +00:00
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clutter/clutter-version.h.in
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@ -32,7 +32,42 @@
* @short_description: Versioning utility macros * @short_description: Versioning utility macros
* *
* Clutter offers a set of macros for checking the version of the library * Clutter offers a set of macros for checking the version of the library
* an application was linked to. * at compile time; it also provides a function to perform the same check
* at run time.
*
* Clutter adds version information to both API deprecations and additions;
* by definining the macros %CLUTTER_VERSION_MIN_REQUIRED and
* %CLUTTER_VERSION_MAX_ALLOWED, you can specify the range of Clutter versions
* whose API you want to use. Functions that were deprecated before, or
* introduced after, this range will trigger compiler warnings. For instance,
* if we define the following symbols:
*
* |[
* CLUTTER_VERSION_MIN_REQUIRED = CLUTTER_VERSION_1_6
* CLUTTER_VERSION_MAX_ALLOWED = CLUTTER_VERSION_1_8
* ]|
*
* and we have the following functions annotated in the Clutter headers:
*
* |[
* void clutter_function_A (void) CLUTTER_DEPRECATED_IN_1_4;
* void clutter_function_B (void) CLUTTER_DEPRECATED_IN_1_6;
* void clutter_function_C (void) CLUTTER_AVAILABLE_IN_1_8;
* void clutter_function_D (void) CLUTTER_AVAILABLE_IN_1_10;
* ]|
*
* then any application code using the functions above will get the output:
*
* |[
* clutter_function_A: deprecation warning
* clutter_function_B: no warning
* clutter_function_C: no warning
* clutter_function_D: symbol not available warning
* ]|
*
* It is possible to disable the compiler warnings by defining the macro
* %CLUTTER_DISABLE_DEPRECATION_WARNINGS before including the clutter.h
* header.
*/ */
#ifndef __CLUTTER_VERSION_H__ #ifndef __CLUTTER_VERSION_H__