ICGetInfo

// MSVFW32.dll
#include <windows.h>

LRESULT ICGetInfo(
    HIC hic,
    ICINFO* picinfo,
    DWORD cb
);

<DllImport("MSVFW32.dll", ExactSpelling:=True)>
Public Shared Function ICGetInfo(
    hic As IntPtr,   ' HIC
    picinfo As IntPtr,   ' ICINFO* out
    cb As UInteger   ' DWORD
) As IntPtr
End Function

' hic : HIC
' picinfo : ICINFO* out
' cb : DWORD
Declare PtrSafe Function ICGetInfo Lib "msvfw32" ( _
    ByVal hic As LongPtr, _
    ByVal picinfo As LongPtr, _
    ByVal cb As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ICGetInfo = ctypes.windll.msvfw32.ICGetInfo
ICGetInfo.restype = ctypes.c_ssize_t
ICGetInfo.argtypes = [
    wintypes.HANDLE,  # hic : HIC
    ctypes.c_void_p,  # picinfo : ICINFO* out
    wintypes.DWORD,  # cb : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSVFW32.dll')
ICGetInfo = Fiddle::Function.new(
  lib['ICGetInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hic : HIC
    Fiddle::TYPE_VOIDP,  # picinfo : ICINFO* out
    -Fiddle::TYPE_INT,  # cb : DWORD
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "msvfw32")]
extern "system" {
    fn ICGetInfo(
        hic: *mut core::ffi::c_void,  // HIC
        picinfo: *mut ICINFO,  // ICINFO* out
        cb: u32  // DWORD
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSVFW32.dll")]
public static extern IntPtr ICGetInfo(IntPtr hic, IntPtr picinfo, uint cb);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSVFW32_ICGetInfo' -Namespace Win32 -PassThru
# $api::ICGetInfo(hic, picinfo, cb)

#uselib "MSVFW32.dll"
#func global ICGetInfo "ICGetInfo" sptr, sptr, sptr
; ICGetInfo hic, varptr(picinfo), cb   ; 戻り値は stat
; hic : HIC -> "sptr"
; picinfo : ICINFO* out -> "sptr"
; cb : DWORD -> "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 "MSVFW32.dll"
#cfunc global ICGetInfo "ICGetInfo" sptr, var, int
; res = ICGetInfo(hic, picinfo, cb)
; hic : HIC -> "sptr"
; picinfo : ICINFO* out -> "var"
; cb : DWORD -> "int"
; ※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。

; LRESULT ICGetInfo(HIC hic, ICINFO* picinfo, DWORD cb)
#uselib "MSVFW32.dll"
#cfunc global ICGetInfo "ICGetInfo" intptr, var, int
; res = ICGetInfo(hic, picinfo, cb)
; hic : HIC -> "intptr"
; picinfo : ICINFO* out -> "var"
; cb : DWORD -> "int"
; ※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 (
	msvfw32 = windows.NewLazySystemDLL("MSVFW32.dll")
	procICGetInfo = msvfw32.NewProc("ICGetInfo")
)

// hic (HIC), picinfo (ICINFO* out), cb (DWORD)
r1, _, err := procICGetInfo.Call(
	uintptr(hic),
	uintptr(picinfo),
	uintptr(cb),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LRESULT

function ICGetInfo(
  hic: THandle;   // HIC
  picinfo: Pointer;   // ICINFO* out
  cb: DWORD   // DWORD
): NativeInt; stdcall;
  external 'MSVFW32.dll' name 'ICGetInfo';

result := DllCall("MSVFW32\ICGetInfo"
    , "Ptr", hic   ; HIC
    , "Ptr", picinfo   ; ICINFO* out
    , "UInt", cb   ; DWORD
    , "Ptr")   ; return: LRESULT

●ICGetInfo(hic, picinfo, cb) = DLL("MSVFW32.dll", "int ICGetInfo(void*, void*, dword)")
# 呼び出し: ICGetInfo(hic, picinfo, cb)
# hic : HIC -> "void*"
# picinfo : ICINFO* out -> "void*"
# cb : DWORD -> "dword"
# 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)。