JetDeleteColumnA

// ESENT.dll  (ANSI / -A)
#include <windows.h>

INT JetDeleteColumnA(
    JET_SESID sesid,
    JET_TABLEID tableid,
    CHAR* szColumnName
);

<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetDeleteColumnA(
    sesid As UIntPtr,   ' JET_SESID
    tableid As UIntPtr,   ' JET_TABLEID
    szColumnName As IntPtr   ' CHAR*
) As Integer
End Function

' sesid : JET_SESID
' tableid : JET_TABLEID
' szColumnName : CHAR*
Declare PtrSafe Function JetDeleteColumnA Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal tableid As LongPtr, _
    ByVal szColumnName 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

JetDeleteColumnA = ctypes.windll.esent.JetDeleteColumnA
JetDeleteColumnA.restype = ctypes.c_int
JetDeleteColumnA.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.c_size_t,  # tableid : JET_TABLEID
    ctypes.POINTER(ctypes.c_byte),  # szColumnName : CHAR*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetDeleteColumnA = Fiddle::Function.new(
  lib['JetDeleteColumnA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_UINTPTR_T,  # tableid : JET_TABLEID
    Fiddle::TYPE_VOIDP,  # szColumnName : CHAR*
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetDeleteColumnA(
        sesid: usize,  // JET_SESID
        tableid: usize,  // JET_TABLEID
        szColumnName: *mut i8  // CHAR*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetDeleteColumnA(UIntPtr sesid, UIntPtr tableid, IntPtr szColumnName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetDeleteColumnA' -Namespace Win32 -PassThru
# $api::JetDeleteColumnA(sesid, tableid, szColumnName)

#uselib "ESENT.dll"
#func global JetDeleteColumnA "JetDeleteColumnA" sptr, sptr, sptr
; JetDeleteColumnA sesid, tableid, varptr(szColumnName)   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; szColumnName : CHAR* -> "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 "ESENT.dll"
#cfunc global JetDeleteColumnA "JetDeleteColumnA" sptr, sptr, var
; res = JetDeleteColumnA(sesid, tableid, szColumnName)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; szColumnName : CHAR* -> "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。

; INT JetDeleteColumnA(JET_SESID sesid, JET_TABLEID tableid, CHAR* szColumnName)
#uselib "ESENT.dll"
#cfunc global JetDeleteColumnA "JetDeleteColumnA" intptr, intptr, var
; res = JetDeleteColumnA(sesid, tableid, szColumnName)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; szColumnName : CHAR* -> "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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetDeleteColumnA = esent.NewProc("JetDeleteColumnA")
)

// sesid (JET_SESID), tableid (JET_TABLEID), szColumnName (CHAR*)
r1, _, err := procJetDeleteColumnA.Call(
	uintptr(sesid),
	uintptr(tableid),
	uintptr(szColumnName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetDeleteColumnA(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  szColumnName: Pointer   // CHAR*
): Integer; stdcall;
  external 'ESENT.dll' name 'JetDeleteColumnA';

result := DllCall("ESENT\JetDeleteColumnA"
    , "UPtr", sesid   ; JET_SESID
    , "UPtr", tableid   ; JET_TABLEID
    , "Ptr", szColumnName   ; CHAR*
    , "Int")   ; return: INT

●JetDeleteColumnA(sesid, tableid, szColumnName) = DLL("ESENT.dll", "int JetDeleteColumnA(int, int, void*)")
# 呼び出し: JetDeleteColumnA(sesid, tableid, szColumnName)
# sesid : JET_SESID -> "int"
# tableid : JET_TABLEID -> "int"
# szColumnName : CHAR* -> "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)。