List all entries of dir using win32

main.c

#include <windows.h>
#include <stdio.h>

int main() {
    WIN32_FIND_DATA findFileData;
    HANDLE hFind = INVALID_HANDLE_VALUE;

    LPCSTR directoryPath = "C:\\Users\\myusername\\Downloads\\*";

    hFind = FindFirstFile(directoryPath, &findFileData);

    if (hFind == INVALID_HANDLE_VALUE) {
        printf("FindFirstFile failed (%lu)\n", GetLastError());
        return 1;
    }

    do {
        printf("%s\n", findFileData.cFileName);
    } while (FindNextFile(hFind, &findFileData) != 0);

    FindClose(hFind);
    return 0;
}

same but in Odin:

package standalone

import win32 "core:sys/windows"
import "core:strings"
import "core:fmt"
import "core:os"

main :: proc() {
    find_file_data: win32.WIN32_FIND_DATAW
    h_find := win32.INVALID_HANDLE_VALUE

    c_dir_path := win32.L("C:\\Users\\evaporei\\Downloads\\*")

    h_find = win32.FindFirstFileW(c_dir_path, &find_file_data)
    if h_find == win32.INVALID_HANDLE_VALUE {
        fmt.eprintln("FindFirstFile failed", win32.GetLastError())
        os.exit(1)
    }
    for {
        i := 0
        for find_file_data.cFileName[i] != 0 {
            fmt.print(rune(find_file_data.cFileName[i]))
            i += 1
        }
        fmt.println("")
        if win32.FindNextFileW(h_find, &find_file_data) == transmute(win32.BOOL)i32(0) do break;
    }
    win32.FindClose(h_find)
}

how to make it if your string ain't constant:

    s := "C:\\Users\\evaporei\\*"
    l := make([]u16, len(s) + 1)
    for ch, i in s {
        l[i] = u16(ch)
    }
    l[len(l) - 1] = 0

    h_find = win32.FindFirstFileW(raw_data(l), &find_file_data)

Edit: oh I just found out there's a bunch of wide string utils here.

So the above can be achieved like:

    s: cstring = "C:\\Users\\evaporei\\*"
    w_s := win32.utf8_to_utf16(string(s), context.temp_allocator)
    h_find = win32.FindFirstFileW(raw_data(w_s), &find_file_data)
    delete(w_s, context.temp_allocator)