DragDetect

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

BOOL DragDetect(
    HWND hwnd,
    POINT pt
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function DragDetect(
    hwnd As IntPtr,   ' HWND
    pt As POINT   ' POINT
) As Boolean
End Function

' hwnd : HWND
' pt : POINT
Declare PtrSafe Function DragDetect Lib "user32" ( _
    ByVal hwnd As LongPtr, _
    ByVal pt 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

DragDetect = ctypes.windll.user32.DragDetect
DragDetect.restype = wintypes.BOOL
DragDetect.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    POINT,  # pt : POINT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DragDetect = Fiddle::Function.new(
  lib['DragDetect'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    Fiddle::TYPE_VOIDP,  # pt : POINT
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn DragDetect(
        hwnd: *mut core::ffi::c_void,  // HWND
        pt: POINT  // POINT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool DragDetect(IntPtr hwnd, POINT pt);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DragDetect' -Namespace Win32 -PassThru
# $api::DragDetect(hwnd, pt)

#uselib "USER32.dll"
#func global DragDetect "DragDetect" sptr, sptr
; DragDetect hwnd, pt   ; 戻り値は stat
; hwnd : HWND -> "sptr"
; pt : POINT -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 DragDetect "DragDetect" sptr, int
; res = DragDetect(hwnd, pt)
; hwnd : HWND -> "sptr"
; pt : POINT -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; BOOL DragDetect(HWND hwnd, POINT pt)
#uselib "USER32.dll"
#cfunc global DragDetect "DragDetect" intptr, int
; res = DragDetect(hwnd, pt)
; hwnd : HWND -> "intptr"
; pt : POINT -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDragDetect = user32.NewProc("DragDetect")
)

// hwnd (HWND), pt (POINT)
r1, _, err := procDragDetect.Call(
	uintptr(hwnd),
	uintptr(pt),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function DragDetect(
  hwnd: THandle;   // HWND
  pt: POINT   // POINT
): BOOL; stdcall;
  external 'USER32.dll' name 'DragDetect';

result := DllCall("USER32\DragDetect"
    , "Ptr", hwnd   ; HWND
    , "Ptr", pt   ; POINT
    , "Int")   ; return: BOOL

●DragDetect(hwnd, pt) = DLL("USER32.dll", "bool DragDetect(void*, void*)")
# 呼び出し: DragDetect(hwnd, pt)
# hwnd : HWND -> "void*"
# pt : POINT -> "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)。