DragObject

// USER32.dll
#include <windows.h>

DWORD DragObject(
    HWND hwndParent,
    HWND hwndFrom,
    DWORD fmt,
    UINT_PTR data,
    HCURSOR hcur   // optional
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function DragObject(
    hwndParent As IntPtr,   ' HWND
    hwndFrom As IntPtr,   ' HWND
    fmt As UInteger,   ' DWORD
    data As UIntPtr,   ' UINT_PTR
    hcur As IntPtr   ' HCURSOR optional
) As UInteger
End Function

' hwndParent : HWND
' hwndFrom : HWND
' fmt : DWORD
' data : UINT_PTR
' hcur : HCURSOR optional
Declare PtrSafe Function DragObject Lib "user32" ( _
    ByVal hwndParent As LongPtr, _
    ByVal hwndFrom As LongPtr, _
    ByVal fmt As Long, _
    ByVal data As LongPtr, _
    ByVal hcur 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

DragObject = ctypes.windll.user32.DragObject
DragObject.restype = wintypes.DWORD
DragObject.argtypes = [
    wintypes.HANDLE,  # hwndParent : HWND
    wintypes.HANDLE,  # hwndFrom : HWND
    wintypes.DWORD,  # fmt : DWORD
    ctypes.c_size_t,  # data : UINT_PTR
    wintypes.HANDLE,  # hcur : HCURSOR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DragObject = Fiddle::Function.new(
  lib['DragObject'],
  [
    Fiddle::TYPE_VOIDP,  # hwndParent : HWND
    Fiddle::TYPE_VOIDP,  # hwndFrom : HWND
    -Fiddle::TYPE_INT,  # fmt : DWORD
    Fiddle::TYPE_UINTPTR_T,  # data : UINT_PTR
    Fiddle::TYPE_VOIDP,  # hcur : HCURSOR optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn DragObject(
        hwndParent: *mut core::ffi::c_void,  // HWND
        hwndFrom: *mut core::ffi::c_void,  // HWND
        fmt: u32,  // DWORD
        data: usize,  // UINT_PTR
        hcur: *mut core::ffi::c_void  // HCURSOR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern uint DragObject(IntPtr hwndParent, IntPtr hwndFrom, uint fmt, UIntPtr data, IntPtr hcur);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DragObject' -Namespace Win32 -PassThru
# $api::DragObject(hwndParent, hwndFrom, fmt, data, hcur)

#uselib "USER32.dll"
#func global DragObject "DragObject" sptr, sptr, sptr, sptr, sptr
; DragObject hwndParent, hwndFrom, fmt, data, hcur   ; 戻り値は stat
; hwndParent : HWND -> "sptr"
; hwndFrom : HWND -> "sptr"
; fmt : DWORD -> "sptr"
; data : UINT_PTR -> "sptr"
; hcur : HCURSOR optional -> "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 "USER32.dll"
#cfunc global DragObject "DragObject" sptr, sptr, int, sptr, sptr
; res = DragObject(hwndParent, hwndFrom, fmt, data, hcur)
; hwndParent : HWND -> "sptr"
; hwndFrom : HWND -> "sptr"
; fmt : DWORD -> "int"
; data : UINT_PTR -> "sptr"
; hcur : HCURSOR optional -> "sptr"

; DWORD DragObject(HWND hwndParent, HWND hwndFrom, DWORD fmt, UINT_PTR data, HCURSOR hcur)
#uselib "USER32.dll"
#cfunc global DragObject "DragObject" intptr, intptr, int, intptr, intptr
; res = DragObject(hwndParent, hwndFrom, fmt, data, hcur)
; hwndParent : HWND -> "intptr"
; hwndFrom : HWND -> "intptr"
; fmt : DWORD -> "int"
; data : UINT_PTR -> "intptr"
; hcur : HCURSOR optional -> "intptr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDragObject = user32.NewProc("DragObject")
)

// hwndParent (HWND), hwndFrom (HWND), fmt (DWORD), data (UINT_PTR), hcur (HCURSOR optional)
r1, _, err := procDragObject.Call(
	uintptr(hwndParent),
	uintptr(hwndFrom),
	uintptr(fmt),
	uintptr(data),
	uintptr(hcur),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DragObject(
  hwndParent: THandle;   // HWND
  hwndFrom: THandle;   // HWND
  fmt: DWORD;   // DWORD
  data: NativeUInt;   // UINT_PTR
  hcur: THandle   // HCURSOR optional
): DWORD; stdcall;
  external 'USER32.dll' name 'DragObject';

result := DllCall("USER32\DragObject"
    , "Ptr", hwndParent   ; HWND
    , "Ptr", hwndFrom   ; HWND
    , "UInt", fmt   ; DWORD
    , "UPtr", data   ; UINT_PTR
    , "Ptr", hcur   ; HCURSOR optional
    , "UInt")   ; return: DWORD

●DragObject(hwndParent, hwndFrom, fmt, data, hcur) = DLL("USER32.dll", "dword DragObject(void*, void*, dword, int, void*)")
# 呼び出し: DragObject(hwndParent, hwndFrom, fmt, data, hcur)
# hwndParent : HWND -> "void*"
# hwndFrom : HWND -> "void*"
# fmt : DWORD -> "dword"
# data : UINT_PTR -> "int"
# hcur : HCURSOR optional -> "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)。