WTSOpenServerA

// WTSAPI32.dll  (ANSI / -A)
#include <windows.h>

HANDLE WTSOpenServerA(
    LPSTR pServerName
);

<DllImport("WTSAPI32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function WTSOpenServerA(
    <MarshalAs(UnmanagedType.LPStr)> pServerName As String   ' LPSTR
) As IntPtr
End Function

' pServerName : LPSTR
Declare PtrSafe Function WTSOpenServerA Lib "wtsapi32" ( _
    ByVal pServerName As String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WTSOpenServerA = ctypes.windll.wtsapi32.WTSOpenServerA
WTSOpenServerA.restype = ctypes.c_void_p
WTSOpenServerA.argtypes = [
    wintypes.LPCSTR,  # pServerName : LPSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WTSAPI32.dll')
WTSOpenServerA = Fiddle::Function.new(
  lib['WTSOpenServerA'],
  [
    Fiddle::TYPE_VOIDP,  # pServerName : LPSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "wtsapi32")]
extern "system" {
    fn WTSOpenServerA(
        pServerName: *mut u8  // LPSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WTSAPI32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr WTSOpenServerA([MarshalAs(UnmanagedType.LPStr)] string pServerName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WTSAPI32_WTSOpenServerA' -Namespace Win32 -PassThru
# $api::WTSOpenServerA(pServerName)

#uselib "WTSAPI32.dll"
#func global WTSOpenServerA "WTSOpenServerA" sptr
; WTSOpenServerA pServerName   ; 戻り値は stat
; pServerName : LPSTR -> "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 "WTSAPI32.dll"
#cfunc global WTSOpenServerA "WTSOpenServerA" str
; res = WTSOpenServerA(pServerName)
; pServerName : LPSTR -> "str"

; HANDLE WTSOpenServerA(LPSTR pServerName)
#uselib "WTSAPI32.dll"
#cfunc global WTSOpenServerA "WTSOpenServerA" str
; res = WTSOpenServerA(pServerName)
; pServerName : LPSTR -> "str"

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

var (
	wtsapi32 = windows.NewLazySystemDLL("WTSAPI32.dll")
	procWTSOpenServerA = wtsapi32.NewProc("WTSOpenServerA")
)

// pServerName (LPSTR)
r1, _, err := procWTSOpenServerA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pServerName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function WTSOpenServerA(
  pServerName: PAnsiChar   // LPSTR
): THandle; stdcall;
  external 'WTSAPI32.dll' name 'WTSOpenServerA';

result := DllCall("WTSAPI32\WTSOpenServerA"
    , "AStr", pServerName   ; LPSTR
    , "Ptr")   ; return: HANDLE

●WTSOpenServerA(pServerName) = DLL("WTSAPI32.dll", "void* WTSOpenServerA(char*)")
# 呼び出し: WTSOpenServerA(pServerName)
# pServerName : LPSTR -> "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)。