Hi Chris,
This was indeed missing in the C API. Queued for 3.12 in
https://github.com/OSGeo/gdal/pull/12853
If you need this in 3.11, you can define the following implementation
detail in your code
struct GDALAlgorithmArgHS
{
GDALAlgorithmArg *ptr = nullptr;
explicit GDALAlgorithmArgHS(GDALAlgorithmArg *arg) : ptr(arg)
{
}
};
but better conditionalize it to 3.11 only, so that to avoid issues in
later version if we would change the definition of struct GDALAlgorithmArgHS
and then do things like
GDALAlgorithmArgH hArg;
hArg->ptr->GetDefault<std::string>();
Even
Le 04/08/2025 à 03:46, Chris Toney via gdal-dev a écrit :
Hi,
In the C API there is GDALAlgorithmArgHasDefaultValue(), but no
interface to the GetDefault() class method to access the value itself
when there is one (nor in the Python bindings, AFAICS).
I don't believe there is a fromHandle() method on GDALAlgorithmArg to
get to the C++ object.
Is there possibly a workaround for that when working through the C API?
Chris
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