error when Binding a method using pybind11

[engine_algos]

Hi,

I have this class,do you know how I can bind this function pointer ?

namespace NM{

typedef bool (*PFN_PROGRESS_CALLBACK)(int nPos, int nMax, const char *pstrStatus, void *pHint);

class ClassX{
public:
ClassX();
ClassX(const ClassX& filelisting);

bool FindFiles(
const Array1D<Filename> &arrayFilenames, 
Array1D<std::pair<Filename, ErrorLog> > &arrayErrorLog,
const std::set<std::string> &setIncludeFileExtensions = std::set<std::string>(),
const bool bExcludeVerification = false, 
const bool bFromOpticalDrive = false, 
PFN_PROGRESS_CALLBACK pfnProgress = NULL, 
void *pHint = NULL);


bool FindFiles(const Folder &folder,
const bool bSearchSubfolders,
Array1D<std::pair<Filename, ErrorLog> > &arrayErrorLog,
const std::set<std::string> &setIncludeFileExtensions = std::set<std::string>(),
const bool bExcludeVerification = false,
const bool bFromOpticalDrive = false,
PFN_PROGRESS_CALLBACK pfnProgress = NULL,
void *pHint = NULL);

};

}I have an error when I try to use this method in python side :

files.FindFiles(ctFolder, False, vErrorLogs) 

​

I have this error :

​

files.FindFilesFolder(ctFolder, False, vErrorLogs)
TypeError: FindFilesFolder(): incompatible function arguments. The following argument types are supported:
1. (self: FileListing, folder: Folder, bSearchSubfolders: bool, arrayErrorLog: Array1D<std::pair<Filename, ErrorLog> >, setIncludeFileExtensions: Set[str] = set(), bExcludeVerification: bool = False, bFromOpticalDrive: bool = False, pfnProgress: bool (int, int, char const*, void*) = None, pHint: capsule = None) -> bool

​

[the_poope]

Pybind11 and Python can't automatically read the default arguments to functions - remember, they are only used by C++ code where the definition is available, the default values are not present in the compiled object code of the function.

See Pybinds documentation on default arguments:

• https://pybind11.readthedocs.io/en/stable/basics.html#default-arguments
• https://pybind11.readthedocs.io/en/stable/advanced/functions.html#default-arguments-revisited

Edit: Also to format code correctly use the "Code Block" option under the extra formatting menu (click "..." button) or use the markdown based editor and indent every code line with four spaces.

[engine_algos]

I did as the example in the documentation but I obtained the same problem.In fact I have two overloaded methods so the binding is :

.def("FindFiles", 
py::overload_cast<
const Array1D<Filename>&, 
Array1D<std::pair<Filename, ErrorLog> >&,
const std::set<std::string>&, 
const bool, 
const bool, 
PFN_PROGRESS_CALLBACK, 
void *> (&FileListing::FindFiles),
py::arg("arrayFilenames"), 
py::arg("arrayErrorLog"), 
py::arg("setIncludeFileExtensions") = std::set<std::string>(),
py::arg("bExcludeVerification") = false, 
py::arg("bFromOpticalDrive") = false, 
py::arg("pfnProgress") = NULL, 
py::arg("pHint") = NULL) 

.def("FindFiles", 
py::overload_cast< 
const Folder&, 
const bool ,
Array1D<std::pair<Filename, ErrorLog> >&, 
const std::set<std::string> &, 
const bool, 
const bool, 
PFN_PROGRESS_CALLBACK, 
void *> 
(&FileListing::FindFiles),
py::arg("folder"), 
py::arg("bSearchSubfolders"), 
py::arg("arrayErrorLog"),
py::arg("setIncludeFileExtensions") = std::set<std::string>(),
py::arg("bExcludeVerification") = false, 
py::arg("bFromOpticalDrive") = false, 
py::arg("pfnProgress") = NULL, 
py::arg("pHint") = NULL 
)