SQLGetNextEnumeration

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

SHORT SQLGetNextEnumeration(
    HANDLE hEnumHandle,
    BYTE* prgEnumData,
    INT* piEnumLength
);

<DllImport("odbcbcp.dll", ExactSpelling:=True)>
Public Shared Function SQLGetNextEnumeration(
    hEnumHandle As IntPtr,   ' HANDLE
    prgEnumData As IntPtr,   ' BYTE* in/out
    ByRef piEnumLength As Integer   ' INT* in/out
) As Short
End Function

' hEnumHandle : HANDLE
' prgEnumData : BYTE* in/out
' piEnumLength : INT* in/out
Declare PtrSafe Function SQLGetNextEnumeration Lib "odbcbcp" ( _
    ByVal hEnumHandle As LongPtr, _
    ByVal prgEnumData As LongPtr, _
    ByRef piEnumLength As Long) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLGetNextEnumeration = ctypes.windll.odbcbcp.SQLGetNextEnumeration
SQLGetNextEnumeration.restype = ctypes.c_short
SQLGetNextEnumeration.argtypes = [
    wintypes.HANDLE,  # hEnumHandle : HANDLE
    ctypes.POINTER(ctypes.c_ubyte),  # prgEnumData : BYTE* in/out
    ctypes.POINTER(ctypes.c_int),  # piEnumLength : INT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('odbcbcp.dll')
SQLGetNextEnumeration = Fiddle::Function.new(
  lib['SQLGetNextEnumeration'],
  [
    Fiddle::TYPE_VOIDP,  # hEnumHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # prgEnumData : BYTE* in/out
    Fiddle::TYPE_VOIDP,  # piEnumLength : INT* in/out
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbcbcp")]
extern "system" {
    fn SQLGetNextEnumeration(
        hEnumHandle: *mut core::ffi::c_void,  // HANDLE
        prgEnumData: *mut u8,  // BYTE* in/out
        piEnumLength: *mut i32  // INT* in/out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("odbcbcp.dll")]
public static extern short SQLGetNextEnumeration(IntPtr hEnumHandle, IntPtr prgEnumData, ref int piEnumLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'odbcbcp_SQLGetNextEnumeration' -Namespace Win32 -PassThru
# $api::SQLGetNextEnumeration(hEnumHandle, prgEnumData, piEnumLength)

#uselib "odbcbcp.dll"
#func global SQLGetNextEnumeration "SQLGetNextEnumeration" sptr, sptr, sptr
; SQLGetNextEnumeration hEnumHandle, varptr(prgEnumData), varptr(piEnumLength)   ; 戻り値は stat
; hEnumHandle : HANDLE -> "sptr"
; prgEnumData : BYTE* in/out -> "sptr"
; piEnumLength : INT* in/out -> "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 "odbcbcp.dll"
#cfunc global SQLGetNextEnumeration "SQLGetNextEnumeration" sptr, var, var
; res = SQLGetNextEnumeration(hEnumHandle, prgEnumData, piEnumLength)
; hEnumHandle : HANDLE -> "sptr"
; prgEnumData : BYTE* in/out -> "var"
; piEnumLength : INT* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; SHORT SQLGetNextEnumeration(HANDLE hEnumHandle, BYTE* prgEnumData, INT* piEnumLength)
#uselib "odbcbcp.dll"
#cfunc global SQLGetNextEnumeration "SQLGetNextEnumeration" intptr, var, var
; res = SQLGetNextEnumeration(hEnumHandle, prgEnumData, piEnumLength)
; hEnumHandle : HANDLE -> "intptr"
; prgEnumData : BYTE* in/out -> "var"
; piEnumLength : INT* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	odbcbcp = windows.NewLazySystemDLL("odbcbcp.dll")
	procSQLGetNextEnumeration = odbcbcp.NewProc("SQLGetNextEnumeration")
)

// hEnumHandle (HANDLE), prgEnumData (BYTE* in/out), piEnumLength (INT* in/out)
r1, _, err := procSQLGetNextEnumeration.Call(
	uintptr(hEnumHandle),
	uintptr(prgEnumData),
	uintptr(piEnumLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLGetNextEnumeration(
  hEnumHandle: THandle;   // HANDLE
  prgEnumData: Pointer;   // BYTE* in/out
  piEnumLength: Pointer   // INT* in/out
): Smallint; stdcall;
  external 'odbcbcp.dll' name 'SQLGetNextEnumeration';

result := DllCall("odbcbcp\SQLGetNextEnumeration"
    , "Ptr", hEnumHandle   ; HANDLE
    , "Ptr", prgEnumData   ; BYTE* in/out
    , "Ptr", piEnumLength   ; INT* in/out
    , "Short")   ; return: SHORT

●SQLGetNextEnumeration(hEnumHandle, prgEnumData, piEnumLength) = DLL("odbcbcp.dll", "int SQLGetNextEnumeration(void*, void*, void*)")
# 呼び出し: SQLGetNextEnumeration(hEnumHandle, prgEnumData, piEnumLength)
# hEnumHandle : HANDLE -> "void*"
# prgEnumData : BYTE* in/out -> "void*"
# piEnumLength : INT* in/out -> "void*"
# 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)。