EnumSystemGeoNames

// KERNEL32.dll
#include <windows.h>

BOOL EnumSystemGeoNames(
    DWORD geoClass,
    GEO_ENUMNAMEPROC geoEnumProc,
    LPARAM data
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EnumSystemGeoNames(
    geoClass As UInteger,   ' DWORD
    geoEnumProc As IntPtr,   ' GEO_ENUMNAMEPROC
    data As IntPtr   ' LPARAM
) As Boolean
End Function

' geoClass : DWORD
' geoEnumProc : GEO_ENUMNAMEPROC
' data : LPARAM
Declare PtrSafe Function EnumSystemGeoNames Lib "kernel32" ( _
    ByVal geoClass As Long, _
    ByVal geoEnumProc As LongPtr, _
    ByVal data As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EnumSystemGeoNames = ctypes.windll.kernel32.EnumSystemGeoNames
EnumSystemGeoNames.restype = wintypes.BOOL
EnumSystemGeoNames.argtypes = [
    wintypes.DWORD,  # geoClass : DWORD
    ctypes.c_void_p,  # geoEnumProc : GEO_ENUMNAMEPROC
    ctypes.c_ssize_t,  # data : LPARAM
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
EnumSystemGeoNames = Fiddle::Function.new(
  lib['EnumSystemGeoNames'],
  [
    -Fiddle::TYPE_INT,  # geoClass : DWORD
    Fiddle::TYPE_VOIDP,  # geoEnumProc : GEO_ENUMNAMEPROC
    Fiddle::TYPE_INTPTR_T,  # data : LPARAM
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn EnumSystemGeoNames(
        geoClass: u32,  // DWORD
        geoEnumProc: *const core::ffi::c_void,  // GEO_ENUMNAMEPROC
        data: isize  // LPARAM
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool EnumSystemGeoNames(uint geoClass, IntPtr geoEnumProc, IntPtr data);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_EnumSystemGeoNames' -Namespace Win32 -PassThru
# $api::EnumSystemGeoNames(geoClass, geoEnumProc, data)

#uselib "KERNEL32.dll"
#func global EnumSystemGeoNames "EnumSystemGeoNames" sptr, sptr, sptr
; EnumSystemGeoNames geoClass, geoEnumProc, data   ; 戻り値は stat
; geoClass : DWORD -> "sptr"
; geoEnumProc : GEO_ENUMNAMEPROC -> "sptr"
; data : LPARAM -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "KERNEL32.dll"
#cfunc global EnumSystemGeoNames "EnumSystemGeoNames" int, sptr, sptr
; res = EnumSystemGeoNames(geoClass, geoEnumProc, data)
; geoClass : DWORD -> "int"
; geoEnumProc : GEO_ENUMNAMEPROC -> "sptr"
; data : LPARAM -> "sptr"

; BOOL EnumSystemGeoNames(DWORD geoClass, GEO_ENUMNAMEPROC geoEnumProc, LPARAM data)
#uselib "KERNEL32.dll"
#cfunc global EnumSystemGeoNames "EnumSystemGeoNames" int, intptr, intptr
; res = EnumSystemGeoNames(geoClass, geoEnumProc, data)
; geoClass : DWORD -> "int"
; geoEnumProc : GEO_ENUMNAMEPROC -> "intptr"
; data : LPARAM -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procEnumSystemGeoNames = kernel32.NewProc("EnumSystemGeoNames")
)

// geoClass (DWORD), geoEnumProc (GEO_ENUMNAMEPROC), data (LPARAM)
r1, _, err := procEnumSystemGeoNames.Call(
	uintptr(geoClass),
	uintptr(geoEnumProc),
	uintptr(data),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EnumSystemGeoNames(
  geoClass: DWORD;   // DWORD
  geoEnumProc: Pointer;   // GEO_ENUMNAMEPROC
  data: NativeInt   // LPARAM
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'EnumSystemGeoNames';

result := DllCall("KERNEL32\EnumSystemGeoNames"
    , "UInt", geoClass   ; DWORD
    , "Ptr", geoEnumProc   ; GEO_ENUMNAMEPROC
    , "Ptr", data   ; LPARAM
    , "Int")   ; return: BOOL

●EnumSystemGeoNames(geoClass, geoEnumProc, data) = DLL("KERNEL32.dll", "bool EnumSystemGeoNames(dword, void*, int)")
# 呼び出し: EnumSystemGeoNames(geoClass, geoEnumProc, data)
# geoClass : DWORD -> "dword"
# geoEnumProc : GEO_ENUMNAMEPROC -> "void*"
# data : LPARAM -> "int"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。