64-bit opendir and readdir in C++Builder

In C++Builder, you can use the FindFirst, FindNext, and FindClose functions from the io.h header to implement directory traversal and file listing. These functions work with both 32-bit and 64-bit versions of C++Builder.

Here's an example of how you can use these functions to iterate through a directory and list its files:

cppCopy code
#include <io.h>

#include <iostream>

#include <string>



int main() {

    intptr_t handle;

    struct _finddata_t fileData;



    std::string directory = "C:\\path\\to\\directory\\*.*";



    handle = _findfirst(directory.c_str(), &fileData);

    if (handle != -1) {

        do {

            if (!(fileData.attrib & _A_SUBDIR)) {

                std::cout << fileData.name << std::endl;

            }

        } while (_findnext(handle, &fileData) == 0);



        _findclose(handle);

    }



    return 0;

}

In this example, the _findfirst function is called with the directory path and a pointer to a _finddata_t structure. The function returns a handle that can be used to traverse the directory. The do-while loop then iterates through the directory entries using _findnext, printing the names of the files.

Make sure to replace "C:\\path\\to\\directory\\*.*" with the actual path to the directory you want to list.

Note that the _findfirst and _findnext functions work with ANSI strings. If you are working with Unicode or wide strings, you can use the wide-character versions of these functions (_wfindfirst, _wfindnext) and the struct _wfinddata_t structure.

Remember to include the necessary header files (io.h in this case) and link against the appropriate libraries when compiling your C++Builder project.