ImmGetCompositionWindow

// IMM32.dll
#include <windows.h>

BOOL ImmGetCompositionWindow(
    HIMC param0,
    COMPOSITIONFORM* lpCompForm
);

<DllImport("IMM32.dll", ExactSpelling:=True)>
Public Shared Function ImmGetCompositionWindow(
    param0 As IntPtr,   ' HIMC
    lpCompForm As IntPtr   ' COMPOSITIONFORM* out
) As Boolean
End Function

' param0 : HIMC
' lpCompForm : COMPOSITIONFORM* out
Declare PtrSafe Function ImmGetCompositionWindow Lib "imm32" ( _
    ByVal param0 As LongPtr, _
    ByVal lpCompForm 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

ImmGetCompositionWindow = ctypes.windll.imm32.ImmGetCompositionWindow
ImmGetCompositionWindow.restype = wintypes.BOOL
ImmGetCompositionWindow.argtypes = [
    wintypes.HANDLE,  # param0 : HIMC
    ctypes.c_void_p,  # lpCompForm : COMPOSITIONFORM* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IMM32.dll')
ImmGetCompositionWindow = Fiddle::Function.new(
  lib['ImmGetCompositionWindow'],
  [
    Fiddle::TYPE_VOIDP,  # param0 : HIMC
    Fiddle::TYPE_VOIDP,  # lpCompForm : COMPOSITIONFORM* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "imm32")]
extern "system" {
    fn ImmGetCompositionWindow(
        param0: *mut core::ffi::c_void,  // HIMC
        lpCompForm: *mut COMPOSITIONFORM  // COMPOSITIONFORM* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("IMM32.dll")]
public static extern bool ImmGetCompositionWindow(IntPtr param0, IntPtr lpCompForm);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IMM32_ImmGetCompositionWindow' -Namespace Win32 -PassThru
# $api::ImmGetCompositionWindow(param0, lpCompForm)

#uselib "IMM32.dll"
#func global ImmGetCompositionWindow "ImmGetCompositionWindow" sptr, sptr
; ImmGetCompositionWindow param0, varptr(lpCompForm)   ; 戻り値は stat
; param0 : HIMC -> "sptr"
; lpCompForm : COMPOSITIONFORM* 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 "IMM32.dll"
#cfunc global ImmGetCompositionWindow "ImmGetCompositionWindow" sptr, var
; res = ImmGetCompositionWindow(param0, lpCompForm)
; param0 : HIMC -> "sptr"
; lpCompForm : COMPOSITIONFORM* 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。

; BOOL ImmGetCompositionWindow(HIMC param0, COMPOSITIONFORM* lpCompForm)
#uselib "IMM32.dll"
#cfunc global ImmGetCompositionWindow "ImmGetCompositionWindow" intptr, var
; res = ImmGetCompositionWindow(param0, lpCompForm)
; param0 : HIMC -> "intptr"
; lpCompForm : COMPOSITIONFORM* 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 (
	imm32 = windows.NewLazySystemDLL("IMM32.dll")
	procImmGetCompositionWindow = imm32.NewProc("ImmGetCompositionWindow")
)

// param0 (HIMC), lpCompForm (COMPOSITIONFORM* out)
r1, _, err := procImmGetCompositionWindow.Call(
	uintptr(param0),
	uintptr(lpCompForm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function ImmGetCompositionWindow(
  param0: THandle;   // HIMC
  lpCompForm: Pointer   // COMPOSITIONFORM* out
): BOOL; stdcall;
  external 'IMM32.dll' name 'ImmGetCompositionWindow';

result := DllCall("IMM32\ImmGetCompositionWindow"
    , "Ptr", param0   ; HIMC
    , "Ptr", lpCompForm   ; COMPOSITIONFORM* out
    , "Int")   ; return: BOOL

●ImmGetCompositionWindow(param0, lpCompForm) = DLL("IMM32.dll", "bool ImmGetCompositionWindow(void*, void*)")
# 呼び出し: ImmGetCompositionWindow(param0, lpCompForm)
# param0 : HIMC -> "void*"
# lpCompForm : COMPOSITIONFORM* 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)。