DAD_SetDragImage

// SHELL32.dll
#include <windows.h>

BOOL DAD_SetDragImage(
    HIMAGELIST him,
    POINT* pptOffset
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function DAD_SetDragImage(
    him As IntPtr,   ' HIMAGELIST
    pptOffset As IntPtr   ' POINT* in/out
) As Boolean
End Function

' him : HIMAGELIST
' pptOffset : POINT* in/out
Declare PtrSafe Function DAD_SetDragImage Lib "shell32" ( _
    ByVal him As LongPtr, _
    ByVal pptOffset 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

DAD_SetDragImage = ctypes.windll.shell32.DAD_SetDragImage
DAD_SetDragImage.restype = wintypes.BOOL
DAD_SetDragImage.argtypes = [
    ctypes.c_ssize_t,  # him : HIMAGELIST
    ctypes.c_void_p,  # pptOffset : POINT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
DAD_SetDragImage = Fiddle::Function.new(
  lib['DAD_SetDragImage'],
  [
    Fiddle::TYPE_INTPTR_T,  # him : HIMAGELIST
    Fiddle::TYPE_VOIDP,  # pptOffset : POINT* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn DAD_SetDragImage(
        him: isize,  // HIMAGELIST
        pptOffset: *mut POINT  // POINT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHELL32.dll")]
public static extern bool DAD_SetDragImage(IntPtr him, IntPtr pptOffset);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_DAD_SetDragImage' -Namespace Win32 -PassThru
# $api::DAD_SetDragImage(him, pptOffset)

#uselib "SHELL32.dll"
#func global DAD_SetDragImage "DAD_SetDragImage" sptr, sptr
; DAD_SetDragImage him, varptr(pptOffset)   ; 戻り値は stat
; him : HIMAGELIST -> "sptr"
; pptOffset : POINT* in/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 "SHELL32.dll"
#cfunc global DAD_SetDragImage "DAD_SetDragImage" sptr, var
; res = DAD_SetDragImage(him, pptOffset)
; him : HIMAGELIST -> "sptr"
; pptOffset : POINT* in/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 DAD_SetDragImage(HIMAGELIST him, POINT* pptOffset)
#uselib "SHELL32.dll"
#cfunc global DAD_SetDragImage "DAD_SetDragImage" intptr, var
; res = DAD_SetDragImage(him, pptOffset)
; him : HIMAGELIST -> "intptr"
; pptOffset : POINT* in/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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procDAD_SetDragImage = shell32.NewProc("DAD_SetDragImage")
)

// him (HIMAGELIST), pptOffset (POINT* in/out)
r1, _, err := procDAD_SetDragImage.Call(
	uintptr(him),
	uintptr(pptOffset),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function DAD_SetDragImage(
  him: NativeInt;   // HIMAGELIST
  pptOffset: Pointer   // POINT* in/out
): BOOL; stdcall;
  external 'SHELL32.dll' name 'DAD_SetDragImage';

result := DllCall("SHELL32\DAD_SetDragImage"
    , "Ptr", him   ; HIMAGELIST
    , "Ptr", pptOffset   ; POINT* in/out
    , "Int")   ; return: BOOL

●DAD_SetDragImage(him, pptOffset) = DLL("SHELL32.dll", "bool DAD_SetDragImage(int, void*)")
# 呼び出し: DAD_SetDragImage(him, pptOffset)
# him : HIMAGELIST -> "int"
# pptOffset : POINT* in/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)。