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Always cast function pointers in GDExtension C example #11390

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Oct 22, 2025
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Always cast function pointers in GDExtension C example #11390

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22 changes: 11 additions & 11 deletions tutorials/scripting/gdextension/gdextension_c_example.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -351,10 +351,10 @@ in the ``src`` folder, adding the following code:
GDExtensionInterfaceVariantGetPtrDestructor variant_get_ptr_destructor = (GDExtensionInterfaceVariantGetPtrDestructor)p_get_proc_address("variant_get_ptr_destructor");

// API.
api.classdb_register_extension_class2 = p_get_proc_address("classdb_register_extension_class2");
api.classdb_register_extension_class2 = (GDExtensionInterfaceClassdbRegisterExtensionClass2)p_get_proc_address("classdb_register_extension_class2");

// Constructors.
constructors.string_name_new_with_latin1_chars = p_get_proc_address("string_name_new_with_latin1_chars");
constructors.string_name_new_with_latin1_chars = (GDExtensionInterfaceStringNameNewWithLatin1Chars)p_get_proc_address("string_name_new_with_latin1_chars");

// Destructors.
destructors.string_name_destructor = variant_get_ptr_destructor(GDEXTENSION_VARIANT_TYPE_STRING_NAME);
Expand Down Expand Up @@ -560,8 +560,8 @@ Then we change the ``load_api()`` function in ``api.c`` to grab these new functi
// API.
api.classdb_register_extension_class2 = p_get_proc_address("classdb_register_extension_class2");
api.classdb_construct_object = (GDExtensionInterfaceClassdbConstructObject)p_get_proc_address("classdb_construct_object");
api.object_set_instance = p_get_proc_address("object_set_instance");
api.object_set_instance_binding = p_get_proc_address("object_set_instance_binding");
api.object_set_instance = (GDExtensionInterfaceObjectSetInstance)p_get_proc_address("object_set_instance");
api.object_set_instance_binding = (GDExtensionInterfaceObjectSetInstanceBinding)p_get_proc_address("object_set_instance_binding");
api.mem_alloc = (GDExtensionInterfaceMemAlloc)p_get_proc_address("mem_alloc");
api.mem_free = (GDExtensionInterfaceMemFree)p_get_proc_address("mem_free");
}
Expand Down Expand Up @@ -1077,11 +1077,11 @@ added to the API.
...
// API
...
api.classdb_register_extension_class_method = p_get_proc_address("classdb_register_extension_class_method");
api.classdb_register_extension_class_method = (GDExtensionInterfaceClassdbRegisterExtensionClassMethod)p_get_proc_address("classdb_register_extension_class_method");

// Constructors.
...
constructors.string_new_with_utf8_chars = p_get_proc_address("string_new_with_utf8_chars");
constructors.string_new_with_utf8_chars = (GDExtensionInterfaceStringNewWithUtf8Chars)p_get_proc_address("string_new_with_utf8_chars");

// Destructors.
...
Expand Down Expand Up @@ -1352,7 +1352,7 @@ In the ``api.c`` file, we can load the new API function:
{
// API
...
api.classdb_register_extension_class_property = p_get_proc_address("classdb_register_extension_class_property");
api.classdb_register_extension_class_property = (GDExtensionInterfaceClassdbRegisterExtensionClassProperty)p_get_proc_address("classdb_register_extension_class_property");

...
}
Expand Down Expand Up @@ -1687,7 +1687,7 @@ Then in the ``api.c`` file we can grab the function pointers from Godot:
// API.
...
api.classdb_get_method_bind = (GDExtensionInterfaceClassdbGetMethodBind)p_get_proc_address("classdb_get_method_bind");
api.object_method_bind_ptrcall = p_get_proc_address("object_method_bind_ptrcall");
api.object_method_bind_ptrcall = (GDExtensionInterfaceObjectMethodBindPtrcall)p_get_proc_address("object_method_bind_ptrcall");

// Constructors.
...
Expand Down Expand Up @@ -1834,7 +1834,7 @@ implement the helper:
{
// API.
...
api.classdb_register_extension_class_signal = p_get_proc_address("classdb_register_extension_class_signal");
api.classdb_register_extension_class_signal = (GDExtensionInterfaceClassdbRegisterExtensionClassSignal)p_get_proc_address("classdb_register_extension_class_signal");

...
}
Expand Down Expand Up @@ -1973,7 +1973,7 @@ implement the helper function.
{
// API.
...
api.object_method_bind_call = p_get_proc_address("object_method_bind_call");
api.object_method_bind_call = (GDExtensionInterfaceObjectMethodBindCall)p_get_proc_address("object_method_bind_call");

// Constructors.
...
Expand All @@ -1982,7 +1982,7 @@ implement the helper function.

// Destructors.
...
destructors.variant_destroy = p_get_proc_address("variant_destroy");
destructors.variant_destroy = (GDExtensionInterfaceVariantDestroy)p_get_proc_address("variant_destroy");

...
}
Expand Down