FlatSB_GetScrollInfo

// COMCTL32.dll
#include <windows.h>

BOOL FlatSB_GetScrollInfo(
    HWND param0,
    SCROLLBAR_CONSTANTS code,
    SCROLLINFO* param2
);

<DllImport("COMCTL32.dll", ExactSpelling:=True)>
Public Shared Function FlatSB_GetScrollInfo(
    param0 As IntPtr,   ' HWND
    code As Integer,   ' SCROLLBAR_CONSTANTS
    param2 As IntPtr   ' SCROLLINFO* in/out
) As Boolean
End Function

' param0 : HWND
' code : SCROLLBAR_CONSTANTS
' param2 : SCROLLINFO* in/out
Declare PtrSafe Function FlatSB_GetScrollInfo Lib "comctl32" ( _
    ByVal param0 As LongPtr, _
    ByVal code As Long, _
    ByVal param2 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

FlatSB_GetScrollInfo = ctypes.windll.comctl32.FlatSB_GetScrollInfo
FlatSB_GetScrollInfo.restype = wintypes.BOOL
FlatSB_GetScrollInfo.argtypes = [
    wintypes.HANDLE,  # param0 : HWND
    ctypes.c_int,  # code : SCROLLBAR_CONSTANTS
    ctypes.c_void_p,  # param2 : SCROLLINFO* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('COMCTL32.dll')
FlatSB_GetScrollInfo = Fiddle::Function.new(
  lib['FlatSB_GetScrollInfo'],
  [
    Fiddle::TYPE_VOIDP,  # param0 : HWND
    Fiddle::TYPE_INT,  # code : SCROLLBAR_CONSTANTS
    Fiddle::TYPE_VOIDP,  # param2 : SCROLLINFO* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "comctl32")]
extern "system" {
    fn FlatSB_GetScrollInfo(
        param0: *mut core::ffi::c_void,  // HWND
        code: i32,  // SCROLLBAR_CONSTANTS
        param2: *mut SCROLLINFO  // SCROLLINFO* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("COMCTL32.dll")]
public static extern bool FlatSB_GetScrollInfo(IntPtr param0, int code, IntPtr param2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'COMCTL32_FlatSB_GetScrollInfo' -Namespace Win32 -PassThru
# $api::FlatSB_GetScrollInfo(param0, code, param2)

#uselib "COMCTL32.dll"
#func global FlatSB_GetScrollInfo "FlatSB_GetScrollInfo" sptr, sptr, sptr
; FlatSB_GetScrollInfo param0, code, varptr(param2)   ; 戻り値は stat
; param0 : HWND -> "sptr"
; code : SCROLLBAR_CONSTANTS -> "sptr"
; param2 : SCROLLINFO* 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 "COMCTL32.dll"
#cfunc global FlatSB_GetScrollInfo "FlatSB_GetScrollInfo" sptr, int, var
; res = FlatSB_GetScrollInfo(param0, code, param2)
; param0 : HWND -> "sptr"
; code : SCROLLBAR_CONSTANTS -> "int"
; param2 : SCROLLINFO* 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 FlatSB_GetScrollInfo(HWND param0, SCROLLBAR_CONSTANTS code, SCROLLINFO* param2)
#uselib "COMCTL32.dll"
#cfunc global FlatSB_GetScrollInfo "FlatSB_GetScrollInfo" intptr, int, var
; res = FlatSB_GetScrollInfo(param0, code, param2)
; param0 : HWND -> "intptr"
; code : SCROLLBAR_CONSTANTS -> "int"
; param2 : SCROLLINFO* 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 (
	comctl32 = windows.NewLazySystemDLL("COMCTL32.dll")
	procFlatSB_GetScrollInfo = comctl32.NewProc("FlatSB_GetScrollInfo")
)

// param0 (HWND), code (SCROLLBAR_CONSTANTS), param2 (SCROLLINFO* in/out)
r1, _, err := procFlatSB_GetScrollInfo.Call(
	uintptr(param0),
	uintptr(code),
	uintptr(param2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function FlatSB_GetScrollInfo(
  param0: THandle;   // HWND
  code: Integer;   // SCROLLBAR_CONSTANTS
  param2: Pointer   // SCROLLINFO* in/out
): BOOL; stdcall;
  external 'COMCTL32.dll' name 'FlatSB_GetScrollInfo';

result := DllCall("COMCTL32\FlatSB_GetScrollInfo"
    , "Ptr", param0   ; HWND
    , "Int", code   ; SCROLLBAR_CONSTANTS
    , "Ptr", param2   ; SCROLLINFO* in/out
    , "Int")   ; return: BOOL

●FlatSB_GetScrollInfo(param0, code, param2) = DLL("COMCTL32.dll", "bool FlatSB_GetScrollInfo(void*, int, void*)")
# 呼び出し: FlatSB_GetScrollInfo(param0, code, param2)
# param0 : HWND -> "void*"
# code : SCROLLBAR_CONSTANTS -> "int"
# param2 : SCROLLINFO* 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)。