capGetDriverDescriptionW

// AVICAP32.dll  (Unicode / -W)
#include <windows.h>

BOOL capGetDriverDescriptionW(
    DWORD wDriverIndex,
    LPWSTR lpszName,
    INT cbName,
    LPWSTR lpszVer,
    INT cbVer
);

<DllImport("AVICAP32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function capGetDriverDescriptionW(
    wDriverIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpszName As System.Text.StringBuilder,   ' LPWSTR out
    cbName As Integer,   ' INT
    <MarshalAs(UnmanagedType.LPWStr)> lpszVer As System.Text.StringBuilder,   ' LPWSTR out
    cbVer As Integer   ' INT
) As Boolean
End Function

' wDriverIndex : DWORD
' lpszName : LPWSTR out
' cbName : INT
' lpszVer : LPWSTR out
' cbVer : INT
Declare PtrSafe Function capGetDriverDescriptionW Lib "avicap32" ( _
    ByVal wDriverIndex As Long, _
    ByVal lpszName As LongPtr, _
    ByVal cbName As Long, _
    ByVal lpszVer As LongPtr, _
    ByVal cbVer As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

capGetDriverDescriptionW = ctypes.windll.avicap32.capGetDriverDescriptionW
capGetDriverDescriptionW.restype = wintypes.BOOL
capGetDriverDescriptionW.argtypes = [
    wintypes.DWORD,  # wDriverIndex : DWORD
    wintypes.LPWSTR,  # lpszName : LPWSTR out
    ctypes.c_int,  # cbName : INT
    wintypes.LPWSTR,  # lpszVer : LPWSTR out
    ctypes.c_int,  # cbVer : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('AVICAP32.dll')
capGetDriverDescriptionW = Fiddle::Function.new(
  lib['capGetDriverDescriptionW'],
  [
    -Fiddle::TYPE_INT,  # wDriverIndex : DWORD
    Fiddle::TYPE_VOIDP,  # lpszName : LPWSTR out
    Fiddle::TYPE_INT,  # cbName : INT
    Fiddle::TYPE_VOIDP,  # lpszVer : LPWSTR out
    Fiddle::TYPE_INT,  # cbVer : INT
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "avicap32")]
extern "system" {
    fn capGetDriverDescriptionW(
        wDriverIndex: u32,  // DWORD
        lpszName: *mut u16,  // LPWSTR out
        cbName: i32,  // INT
        lpszVer: *mut u16,  // LPWSTR out
        cbVer: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("AVICAP32.dll", CharSet = CharSet.Unicode)]
public static extern bool capGetDriverDescriptionW(uint wDriverIndex, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszName, int cbName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszVer, int cbVer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'AVICAP32_capGetDriverDescriptionW' -Namespace Win32 -PassThru
# $api::capGetDriverDescriptionW(wDriverIndex, lpszName, cbName, lpszVer, cbVer)

#uselib "AVICAP32.dll"
#func global capGetDriverDescriptionW "capGetDriverDescriptionW" wptr, wptr, wptr, wptr, wptr
; capGetDriverDescriptionW wDriverIndex, varptr(lpszName), cbName, varptr(lpszVer), cbVer   ; 戻り値は stat
; wDriverIndex : DWORD -> "wptr"
; lpszName : LPWSTR out -> "wptr"
; cbName : INT -> "wptr"
; lpszVer : LPWSTR out -> "wptr"
; cbVer : INT -> "wptr"
; ※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 "AVICAP32.dll"
#cfunc global capGetDriverDescriptionW "capGetDriverDescriptionW" int, var, int, var, int
; res = capGetDriverDescriptionW(wDriverIndex, lpszName, cbName, lpszVer, cbVer)
; wDriverIndex : DWORD -> "int"
; lpszName : LPWSTR out -> "var"
; cbName : INT -> "int"
; lpszVer : LPWSTR out -> "var"
; cbVer : INT -> "int"
; ※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 capGetDriverDescriptionW(DWORD wDriverIndex, LPWSTR lpszName, INT cbName, LPWSTR lpszVer, INT cbVer)
#uselib "AVICAP32.dll"
#cfunc global capGetDriverDescriptionW "capGetDriverDescriptionW" int, var, int, var, int
; res = capGetDriverDescriptionW(wDriverIndex, lpszName, cbName, lpszVer, cbVer)
; wDriverIndex : DWORD -> "int"
; lpszName : LPWSTR out -> "var"
; cbName : INT -> "int"
; lpszVer : LPWSTR out -> "var"
; cbVer : INT -> "int"
; ※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 (
	avicap32 = windows.NewLazySystemDLL("AVICAP32.dll")
	proccapGetDriverDescriptionW = avicap32.NewProc("capGetDriverDescriptionW")
)

// wDriverIndex (DWORD), lpszName (LPWSTR out), cbName (INT), lpszVer (LPWSTR out), cbVer (INT)
r1, _, err := proccapGetDriverDescriptionW.Call(
	uintptr(wDriverIndex),
	uintptr(lpszName),
	uintptr(cbName),
	uintptr(lpszVer),
	uintptr(cbVer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function capGetDriverDescriptionW(
  wDriverIndex: DWORD;   // DWORD
  lpszName: PWideChar;   // LPWSTR out
  cbName: Integer;   // INT
  lpszVer: PWideChar;   // LPWSTR out
  cbVer: Integer   // INT
): BOOL; stdcall;
  external 'AVICAP32.dll' name 'capGetDriverDescriptionW';

result := DllCall("AVICAP32\capGetDriverDescriptionW"
    , "UInt", wDriverIndex   ; DWORD
    , "Ptr", lpszName   ; LPWSTR out
    , "Int", cbName   ; INT
    , "Ptr", lpszVer   ; LPWSTR out
    , "Int", cbVer   ; INT
    , "Int")   ; return: BOOL

●capGetDriverDescriptionW(wDriverIndex, lpszName, cbName, lpszVer, cbVer) = DLL("AVICAP32.dll", "bool capGetDriverDescriptionW(dword, char*, int, char*, int)")
# 呼び出し: capGetDriverDescriptionW(wDriverIndex, lpszName, cbName, lpszVer, cbVer)
# wDriverIndex : DWORD -> "dword"
# lpszName : LPWSTR out -> "char*"
# cbName : INT -> "int"
# lpszVer : LPWSTR out -> "char*"
# cbVer : INT -> "int"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。