GdipImageGetFrameCount

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

Status GdipImageGetFrameCount(
    GpImage* image,
    const GUID* dimensionID,
    DWORD* count
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipImageGetFrameCount(
    image As IntPtr,   ' GpImage* in/out
    ByRef dimensionID As Guid,   ' GUID*
    ByRef count As UInteger   ' DWORD* in/out
) As Integer
End Function

' image : GpImage* in/out
' dimensionID : GUID*
' count : DWORD* in/out
Declare PtrSafe Function GdipImageGetFrameCount Lib "gdiplus" ( _
    ByVal image As LongPtr, _
    ByVal dimensionID As LongPtr, _
    ByRef count As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipImageGetFrameCount = ctypes.windll.gdiplus.GdipImageGetFrameCount
GdipImageGetFrameCount.restype = ctypes.c_int
GdipImageGetFrameCount.argtypes = [
    ctypes.c_void_p,  # image : GpImage* in/out
    ctypes.c_void_p,  # dimensionID : GUID*
    ctypes.POINTER(wintypes.DWORD),  # count : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipImageGetFrameCount = Fiddle::Function.new(
  lib['GdipImageGetFrameCount'],
  [
    Fiddle::TYPE_VOIDP,  # image : GpImage* in/out
    Fiddle::TYPE_VOIDP,  # dimensionID : GUID*
    Fiddle::TYPE_VOIDP,  # count : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipImageGetFrameCount(
        image: *mut GpImage,  // GpImage* in/out
        dimensionID: *const GUID,  // GUID*
        count: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipImageGetFrameCount(IntPtr image, ref Guid dimensionID, ref uint count);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipImageGetFrameCount' -Namespace Win32 -PassThru
# $api::GdipImageGetFrameCount(image, dimensionID, count)

#uselib "gdiplus.dll"
#func global GdipImageGetFrameCount "GdipImageGetFrameCount" sptr, sptr, sptr
; GdipImageGetFrameCount varptr(image), varptr(dimensionID), varptr(count)   ; 戻り値は stat
; image : GpImage* in/out -> "sptr"
; dimensionID : GUID* -> "sptr"
; count : DWORD* 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 "gdiplus.dll"
#cfunc global GdipImageGetFrameCount "GdipImageGetFrameCount" var, var, var
; res = GdipImageGetFrameCount(image, dimensionID, count)
; image : GpImage* in/out -> "var"
; dimensionID : GUID* -> "var"
; count : DWORD* 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。

; Status GdipImageGetFrameCount(GpImage* image, GUID* dimensionID, DWORD* count)
#uselib "gdiplus.dll"
#cfunc global GdipImageGetFrameCount "GdipImageGetFrameCount" var, var, var
; res = GdipImageGetFrameCount(image, dimensionID, count)
; image : GpImage* in/out -> "var"
; dimensionID : GUID* -> "var"
; count : DWORD* 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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipImageGetFrameCount = gdiplus.NewProc("GdipImageGetFrameCount")
)

// image (GpImage* in/out), dimensionID (GUID*), count (DWORD* in/out)
r1, _, err := procGdipImageGetFrameCount.Call(
	uintptr(image),
	uintptr(dimensionID),
	uintptr(count),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipImageGetFrameCount(
  image: Pointer;   // GpImage* in/out
  dimensionID: PGUID;   // GUID*
  count: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipImageGetFrameCount';

result := DllCall("gdiplus\GdipImageGetFrameCount"
    , "Ptr", image   ; GpImage* in/out
    , "Ptr", dimensionID   ; GUID*
    , "Ptr", count   ; DWORD* in/out
    , "Int")   ; return: Status

●GdipImageGetFrameCount(image, dimensionID, count) = DLL("gdiplus.dll", "int GdipImageGetFrameCount(void*, void*, void*)")
# 呼び出し: GdipImageGetFrameCount(image, dimensionID, count)
# image : GpImage* in/out -> "void*"
# dimensionID : GUID* -> "void*"
# count : DWORD* 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)。