DCompositionGetStatistics

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

HRESULT DCompositionGetStatistics(
    ULONGLONG frameId,
    COMPOSITION_FRAME_STATS* frameStats,
    DWORD targetIdCount,
    COMPOSITION_TARGET_ID* targetIds,   // optional
    DWORD* actualTargetIdCount   // optional
);

<DllImport("dcomp.dll", ExactSpelling:=True)>
Public Shared Function DCompositionGetStatistics(
    frameId As ULong,   ' ULONGLONG
    frameStats As IntPtr,   ' COMPOSITION_FRAME_STATS* out
    targetIdCount As UInteger,   ' DWORD
    targetIds As IntPtr,   ' COMPOSITION_TARGET_ID* optional, out
    actualTargetIdCount As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' frameId : ULONGLONG
' frameStats : COMPOSITION_FRAME_STATS* out
' targetIdCount : DWORD
' targetIds : COMPOSITION_TARGET_ID* optional, out
' actualTargetIdCount : DWORD* optional, out
Declare PtrSafe Function DCompositionGetStatistics Lib "dcomp" ( _
    ByVal frameId As LongLong, _
    ByVal frameStats As LongPtr, _
    ByVal targetIdCount As Long, _
    ByVal targetIds As LongPtr, _
    ByVal actualTargetIdCount 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

DCompositionGetStatistics = ctypes.windll.dcomp.DCompositionGetStatistics
DCompositionGetStatistics.restype = ctypes.c_int
DCompositionGetStatistics.argtypes = [
    ctypes.c_ulonglong,  # frameId : ULONGLONG
    ctypes.c_void_p,  # frameStats : COMPOSITION_FRAME_STATS* out
    wintypes.DWORD,  # targetIdCount : DWORD
    ctypes.c_void_p,  # targetIds : COMPOSITION_TARGET_ID* optional, out
    ctypes.POINTER(wintypes.DWORD),  # actualTargetIdCount : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dcomp.dll')
DCompositionGetStatistics = Fiddle::Function.new(
  lib['DCompositionGetStatistics'],
  [
    -Fiddle::TYPE_LONG_LONG,  # frameId : ULONGLONG
    Fiddle::TYPE_VOIDP,  # frameStats : COMPOSITION_FRAME_STATS* out
    -Fiddle::TYPE_INT,  # targetIdCount : DWORD
    Fiddle::TYPE_VOIDP,  # targetIds : COMPOSITION_TARGET_ID* optional, out
    Fiddle::TYPE_VOIDP,  # actualTargetIdCount : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dcomp")]
extern "system" {
    fn DCompositionGetStatistics(
        frameId: u64,  // ULONGLONG
        frameStats: *mut COMPOSITION_FRAME_STATS,  // COMPOSITION_FRAME_STATS* out
        targetIdCount: u32,  // DWORD
        targetIds: *mut COMPOSITION_TARGET_ID,  // COMPOSITION_TARGET_ID* optional, out
        actualTargetIdCount: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dcomp.dll")]
public static extern int DCompositionGetStatistics(ulong frameId, IntPtr frameStats, uint targetIdCount, IntPtr targetIds, IntPtr actualTargetIdCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dcomp_DCompositionGetStatistics' -Namespace Win32 -PassThru
# $api::DCompositionGetStatistics(frameId, frameStats, targetIdCount, targetIds, actualTargetIdCount)

#uselib "dcomp.dll"
#func global DCompositionGetStatistics "DCompositionGetStatistics" sptr, sptr, sptr, sptr, sptr
; DCompositionGetStatistics frameId, varptr(frameStats), targetIdCount, varptr(targetIds), varptr(actualTargetIdCount)   ; 戻り値は stat
; frameId : ULONGLONG -> "sptr"
; frameStats : COMPOSITION_FRAME_STATS* out -> "sptr"
; targetIdCount : DWORD -> "sptr"
; targetIds : COMPOSITION_TARGET_ID* optional, out -> "sptr"
; actualTargetIdCount : DWORD* optional, out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 "dcomp.dll"
#cfunc global DCompositionGetStatistics "DCompositionGetStatistics" int64, var, int, var, var
; res = DCompositionGetStatistics(frameId, frameStats, targetIdCount, targetIds, actualTargetIdCount)
; frameId : ULONGLONG -> "int64"
; frameStats : COMPOSITION_FRAME_STATS* out -> "var"
; targetIdCount : DWORD -> "int"
; targetIds : COMPOSITION_TARGET_ID* optional, out -> "var"
; actualTargetIdCount : DWORD* optional, 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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; HRESULT DCompositionGetStatistics(ULONGLONG frameId, COMPOSITION_FRAME_STATS* frameStats, DWORD targetIdCount, COMPOSITION_TARGET_ID* targetIds, DWORD* actualTargetIdCount)
#uselib "dcomp.dll"
#cfunc global DCompositionGetStatistics "DCompositionGetStatistics" int64, var, int, var, var
; res = DCompositionGetStatistics(frameId, frameStats, targetIdCount, targetIds, actualTargetIdCount)
; frameId : ULONGLONG -> "int64"
; frameStats : COMPOSITION_FRAME_STATS* out -> "var"
; targetIdCount : DWORD -> "int"
; targetIds : COMPOSITION_TARGET_ID* optional, out -> "var"
; actualTargetIdCount : DWORD* optional, 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 (
	dcomp = windows.NewLazySystemDLL("dcomp.dll")
	procDCompositionGetStatistics = dcomp.NewProc("DCompositionGetStatistics")
)

// frameId (ULONGLONG), frameStats (COMPOSITION_FRAME_STATS* out), targetIdCount (DWORD), targetIds (COMPOSITION_TARGET_ID* optional, out), actualTargetIdCount (DWORD* optional, out)
r1, _, err := procDCompositionGetStatistics.Call(
	uintptr(frameId),
	uintptr(frameStats),
	uintptr(targetIdCount),
	uintptr(targetIds),
	uintptr(actualTargetIdCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DCompositionGetStatistics(
  frameId: UInt64;   // ULONGLONG
  frameStats: Pointer;   // COMPOSITION_FRAME_STATS* out
  targetIdCount: DWORD;   // DWORD
  targetIds: Pointer;   // COMPOSITION_TARGET_ID* optional, out
  actualTargetIdCount: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'dcomp.dll' name 'DCompositionGetStatistics';

result := DllCall("dcomp\DCompositionGetStatistics"
    , "Int64", frameId   ; ULONGLONG
    , "Ptr", frameStats   ; COMPOSITION_FRAME_STATS* out
    , "UInt", targetIdCount   ; DWORD
    , "Ptr", targetIds   ; COMPOSITION_TARGET_ID* optional, out
    , "Ptr", actualTargetIdCount   ; DWORD* optional, out
    , "Int")   ; return: HRESULT

●DCompositionGetStatistics(frameId, frameStats, targetIdCount, targetIds, actualTargetIdCount) = DLL("dcomp.dll", "int DCompositionGetStatistics(qword, void*, dword, void*, void*)")
# 呼び出し: DCompositionGetStatistics(frameId, frameStats, targetIdCount, targetIds, actualTargetIdCount)
# frameId : ULONGLONG -> "qword"
# frameStats : COMPOSITION_FRAME_STATS* out -> "void*"
# targetIdCount : DWORD -> "dword"
# targetIds : COMPOSITION_TARGET_ID* optional, out -> "void*"
# actualTargetIdCount : DWORD* optional, 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)。