GetModuleHandleExW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

BOOL GetModuleHandleExW(
    DWORD dwFlags,
    LPCWSTR lpModuleName,   // optional
    HMODULE* phModule
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetModuleHandleExW(
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpModuleName As String,   ' LPCWSTR optional
    phModule As IntPtr   ' HMODULE* out
) As Boolean
End Function

' dwFlags : DWORD
' lpModuleName : LPCWSTR optional
' phModule : HMODULE* out
Declare PtrSafe Function GetModuleHandleExW Lib "kernel32" ( _
    ByVal dwFlags As Long, _
    ByVal lpModuleName As LongPtr, _
    ByVal phModule As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetModuleHandleExW = ctypes.windll.kernel32.GetModuleHandleExW
GetModuleHandleExW.restype = wintypes.BOOL
GetModuleHandleExW.argtypes = [
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPCWSTR,  # lpModuleName : LPCWSTR optional
    ctypes.c_void_p,  # phModule : HMODULE* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetModuleHandleExW = Fiddle::Function.new(
  lib['GetModuleHandleExW'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpModuleName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # phModule : HMODULE* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn GetModuleHandleExW(
        dwFlags: u32,  // DWORD
        lpModuleName: *const u16,  // LPCWSTR optional
        phModule: *mut *mut core::ffi::c_void  // HMODULE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool GetModuleHandleExW(uint dwFlags, [MarshalAs(UnmanagedType.LPWStr)] string lpModuleName, IntPtr phModule);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetModuleHandleExW' -Namespace Win32 -PassThru
# $api::GetModuleHandleExW(dwFlags, lpModuleName, phModule)

#uselib "KERNEL32.dll"
#func global GetModuleHandleExW "GetModuleHandleExW" wptr, wptr, wptr
; GetModuleHandleExW dwFlags, lpModuleName, phModule   ; 戻り値は stat
; dwFlags : DWORD -> "wptr"
; lpModuleName : LPCWSTR optional -> "wptr"
; phModule : HMODULE* out -> "wptr"
; ※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 GetModuleHandleExW "GetModuleHandleExW" int, wstr, sptr
; res = GetModuleHandleExW(dwFlags, lpModuleName, phModule)
; dwFlags : DWORD -> "int"
; lpModuleName : LPCWSTR optional -> "wstr"
; phModule : HMODULE* out -> "sptr"

; BOOL GetModuleHandleExW(DWORD dwFlags, LPCWSTR lpModuleName, HMODULE* phModule)
#uselib "KERNEL32.dll"
#cfunc global GetModuleHandleExW "GetModuleHandleExW" int, wstr, intptr
; res = GetModuleHandleExW(dwFlags, lpModuleName, phModule)
; dwFlags : DWORD -> "int"
; lpModuleName : LPCWSTR optional -> "wstr"
; phModule : HMODULE* out -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetModuleHandleExW = kernel32.NewProc("GetModuleHandleExW")
)

// dwFlags (DWORD), lpModuleName (LPCWSTR optional), phModule (HMODULE* out)
r1, _, err := procGetModuleHandleExW.Call(
	uintptr(dwFlags),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpModuleName))),
	uintptr(phModule),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetModuleHandleExW(
  dwFlags: DWORD;   // DWORD
  lpModuleName: PWideChar;   // LPCWSTR optional
  phModule: Pointer   // HMODULE* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetModuleHandleExW';

result := DllCall("KERNEL32\GetModuleHandleExW"
    , "UInt", dwFlags   ; DWORD
    , "WStr", lpModuleName   ; LPCWSTR optional
    , "Ptr", phModule   ; HMODULE* out
    , "Int")   ; return: BOOL

●GetModuleHandleExW(dwFlags, lpModuleName, phModule) = DLL("KERNEL32.dll", "bool GetModuleHandleExW(dword, char*, void*)")
# 呼び出し: GetModuleHandleExW(dwFlags, lpModuleName, phModule)
# dwFlags : DWORD -> "dword"
# lpModuleName : LPCWSTR optional -> "char*"
# phModule : HMODULE* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。