D3DX11CreateFFT1DComplex

// d3dcsx.dll
#include <windows.h>

HRESULT D3DX11CreateFFT1DComplex(
    ID3D11DeviceContext* pDeviceContext,
    DWORD X,
    DWORD Flags,
    D3DX11_FFT_BUFFER_INFO* pBufferInfo,
    ID3DX11FFT** ppFFT
);

<DllImport("d3dcsx.dll", ExactSpelling:=True)>
Public Shared Function D3DX11CreateFFT1DComplex(
    pDeviceContext As IntPtr,   ' ID3D11DeviceContext*
    X As UInteger,   ' DWORD
    Flags As UInteger,   ' DWORD
    pBufferInfo As IntPtr,   ' D3DX11_FFT_BUFFER_INFO* out
    ppFFT As IntPtr   ' ID3DX11FFT** out
) As Integer
End Function

' pDeviceContext : ID3D11DeviceContext*
' X : DWORD
' Flags : DWORD
' pBufferInfo : D3DX11_FFT_BUFFER_INFO* out
' ppFFT : ID3DX11FFT** out
Declare PtrSafe Function D3DX11CreateFFT1DComplex Lib "d3dcsx" ( _
    ByVal pDeviceContext As LongPtr, _
    ByVal X As Long, _
    ByVal Flags As Long, _
    ByVal pBufferInfo As LongPtr, _
    ByVal ppFFT 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

D3DX11CreateFFT1DComplex = ctypes.windll.d3dcsx.D3DX11CreateFFT1DComplex
D3DX11CreateFFT1DComplex.restype = ctypes.c_int
D3DX11CreateFFT1DComplex.argtypes = [
    ctypes.c_void_p,  # pDeviceContext : ID3D11DeviceContext*
    wintypes.DWORD,  # X : DWORD
    wintypes.DWORD,  # Flags : DWORD
    ctypes.c_void_p,  # pBufferInfo : D3DX11_FFT_BUFFER_INFO* out
    ctypes.c_void_p,  # ppFFT : ID3DX11FFT** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('d3dcsx.dll')
D3DX11CreateFFT1DComplex = Fiddle::Function.new(
  lib['D3DX11CreateFFT1DComplex'],
  [
    Fiddle::TYPE_VOIDP,  # pDeviceContext : ID3D11DeviceContext*
    -Fiddle::TYPE_INT,  # X : DWORD
    -Fiddle::TYPE_INT,  # Flags : DWORD
    Fiddle::TYPE_VOIDP,  # pBufferInfo : D3DX11_FFT_BUFFER_INFO* out
    Fiddle::TYPE_VOIDP,  # ppFFT : ID3DX11FFT** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "d3dcsx")]
extern "system" {
    fn D3DX11CreateFFT1DComplex(
        pDeviceContext: *mut core::ffi::c_void,  // ID3D11DeviceContext*
        X: u32,  // DWORD
        Flags: u32,  // DWORD
        pBufferInfo: *mut D3DX11_FFT_BUFFER_INFO,  // D3DX11_FFT_BUFFER_INFO* out
        ppFFT: *mut *mut core::ffi::c_void  // ID3DX11FFT** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("d3dcsx.dll")]
public static extern int D3DX11CreateFFT1DComplex(IntPtr pDeviceContext, uint X, uint Flags, IntPtr pBufferInfo, IntPtr ppFFT);
"@
$api = Add-Type -MemberDefinition $sig -Name 'd3dcsx_D3DX11CreateFFT1DComplex' -Namespace Win32 -PassThru
# $api::D3DX11CreateFFT1DComplex(pDeviceContext, X, Flags, pBufferInfo, ppFFT)

#uselib "d3dcsx.dll"
#func global D3DX11CreateFFT1DComplex "D3DX11CreateFFT1DComplex" sptr, sptr, sptr, sptr, sptr
; D3DX11CreateFFT1DComplex pDeviceContext, X, Flags, varptr(pBufferInfo), ppFFT   ; 戻り値は stat
; pDeviceContext : ID3D11DeviceContext* -> "sptr"
; X : DWORD -> "sptr"
; Flags : DWORD -> "sptr"
; pBufferInfo : D3DX11_FFT_BUFFER_INFO* out -> "sptr"
; ppFFT : ID3DX11FFT** 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 "d3dcsx.dll"
#cfunc global D3DX11CreateFFT1DComplex "D3DX11CreateFFT1DComplex" sptr, int, int, var, sptr
; res = D3DX11CreateFFT1DComplex(pDeviceContext, X, Flags, pBufferInfo, ppFFT)
; pDeviceContext : ID3D11DeviceContext* -> "sptr"
; X : DWORD -> "int"
; Flags : DWORD -> "int"
; pBufferInfo : D3DX11_FFT_BUFFER_INFO* out -> "var"
; ppFFT : ID3DX11FFT** out -> "sptr"
; ※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。

; HRESULT D3DX11CreateFFT1DComplex(ID3D11DeviceContext* pDeviceContext, DWORD X, DWORD Flags, D3DX11_FFT_BUFFER_INFO* pBufferInfo, ID3DX11FFT** ppFFT)
#uselib "d3dcsx.dll"
#cfunc global D3DX11CreateFFT1DComplex "D3DX11CreateFFT1DComplex" intptr, int, int, var, intptr
; res = D3DX11CreateFFT1DComplex(pDeviceContext, X, Flags, pBufferInfo, ppFFT)
; pDeviceContext : ID3D11DeviceContext* -> "intptr"
; X : DWORD -> "int"
; Flags : DWORD -> "int"
; pBufferInfo : D3DX11_FFT_BUFFER_INFO* out -> "var"
; ppFFT : ID3DX11FFT** out -> "intptr"
; ※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 (
	d3dcsx = windows.NewLazySystemDLL("d3dcsx.dll")
	procD3DX11CreateFFT1DComplex = d3dcsx.NewProc("D3DX11CreateFFT1DComplex")
)

// pDeviceContext (ID3D11DeviceContext*), X (DWORD), Flags (DWORD), pBufferInfo (D3DX11_FFT_BUFFER_INFO* out), ppFFT (ID3DX11FFT** out)
r1, _, err := procD3DX11CreateFFT1DComplex.Call(
	uintptr(pDeviceContext),
	uintptr(X),
	uintptr(Flags),
	uintptr(pBufferInfo),
	uintptr(ppFFT),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function D3DX11CreateFFT1DComplex(
  pDeviceContext: Pointer;   // ID3D11DeviceContext*
  X: DWORD;   // DWORD
  Flags: DWORD;   // DWORD
  pBufferInfo: Pointer;   // D3DX11_FFT_BUFFER_INFO* out
  ppFFT: Pointer   // ID3DX11FFT** out
): Integer; stdcall;
  external 'd3dcsx.dll' name 'D3DX11CreateFFT1DComplex';

result := DllCall("d3dcsx\D3DX11CreateFFT1DComplex"
    , "Ptr", pDeviceContext   ; ID3D11DeviceContext*
    , "UInt", X   ; DWORD
    , "UInt", Flags   ; DWORD
    , "Ptr", pBufferInfo   ; D3DX11_FFT_BUFFER_INFO* out
    , "Ptr", ppFFT   ; ID3DX11FFT** out
    , "Int")   ; return: HRESULT

●D3DX11CreateFFT1DComplex(pDeviceContext, X, Flags, pBufferInfo, ppFFT) = DLL("d3dcsx.dll", "int D3DX11CreateFFT1DComplex(void*, dword, dword, void*, void*)")
# 呼び出し: D3DX11CreateFFT1DComplex(pDeviceContext, X, Flags, pBufferInfo, ppFFT)
# pDeviceContext : ID3D11DeviceContext* -> "void*"
# X : DWORD -> "dword"
# Flags : DWORD -> "dword"
# pBufferInfo : D3DX11_FFT_BUFFER_INFO* out -> "void*"
# ppFFT : ID3DX11FFT** 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)。