PdhCreateSQLTablesA

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

DWORD PdhCreateSQLTablesA(
    LPCSTR szDataSource
);

<DllImport("pdh.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function PdhCreateSQLTablesA(
    <MarshalAs(UnmanagedType.LPStr)> szDataSource As String   ' LPCSTR
) As UInteger
End Function

' szDataSource : LPCSTR
Declare PtrSafe Function PdhCreateSQLTablesA Lib "pdh" ( _
    ByVal szDataSource As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PdhCreateSQLTablesA = ctypes.windll.pdh.PdhCreateSQLTablesA
PdhCreateSQLTablesA.restype = wintypes.DWORD
PdhCreateSQLTablesA.argtypes = [
    wintypes.LPCSTR,  # szDataSource : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhCreateSQLTablesA = Fiddle::Function.new(
  lib['PdhCreateSQLTablesA'],
  [
    Fiddle::TYPE_VOIDP,  # szDataSource : LPCSTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "pdh")]
extern "system" {
    fn PdhCreateSQLTablesA(
        szDataSource: *const u8  // LPCSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll", CharSet = CharSet.Ansi)]
public static extern uint PdhCreateSQLTablesA([MarshalAs(UnmanagedType.LPStr)] string szDataSource);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhCreateSQLTablesA' -Namespace Win32 -PassThru
# $api::PdhCreateSQLTablesA(szDataSource)

#uselib "pdh.dll"
#func global PdhCreateSQLTablesA "PdhCreateSQLTablesA" sptr
; PdhCreateSQLTablesA szDataSource   ; 戻り値は stat
; szDataSource : LPCSTR -> "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 "pdh.dll"
#cfunc global PdhCreateSQLTablesA "PdhCreateSQLTablesA" str
; res = PdhCreateSQLTablesA(szDataSource)
; szDataSource : LPCSTR -> "str"

; DWORD PdhCreateSQLTablesA(LPCSTR szDataSource)
#uselib "pdh.dll"
#cfunc global PdhCreateSQLTablesA "PdhCreateSQLTablesA" str
; res = PdhCreateSQLTablesA(szDataSource)
; szDataSource : LPCSTR -> "str"

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

var (
	pdh = windows.NewLazySystemDLL("pdh.dll")
	procPdhCreateSQLTablesA = pdh.NewProc("PdhCreateSQLTablesA")
)

// szDataSource (LPCSTR)
r1, _, err := procPdhCreateSQLTablesA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szDataSource))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhCreateSQLTablesA(
  szDataSource: PAnsiChar   // LPCSTR
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhCreateSQLTablesA';

result := DllCall("pdh\PdhCreateSQLTablesA"
    , "AStr", szDataSource   ; LPCSTR
    , "UInt")   ; return: DWORD

●PdhCreateSQLTablesA(szDataSource) = DLL("pdh.dll", "dword PdhCreateSQLTablesA(char*)")
# 呼び出し: PdhCreateSQLTablesA(szDataSource)
# szDataSource : LPCSTR -> "char*"
# 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)。