GdipSetPageUnit

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

Status GdipSetPageUnit(
    GpGraphics* graphics,
    Unit unit
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipSetPageUnit(
    graphics As IntPtr,   ' GpGraphics* in/out
    unit As Integer   ' Unit
) As Integer
End Function

' graphics : GpGraphics* in/out
' unit : Unit
Declare PtrSafe Function GdipSetPageUnit Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal unit 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

GdipSetPageUnit = ctypes.windll.gdiplus.GdipSetPageUnit
GdipSetPageUnit.restype = ctypes.c_int
GdipSetPageUnit.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_int,  # unit : Unit
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipSetPageUnit = Fiddle::Function.new(
  lib['GdipSetPageUnit'],
  [
    Fiddle::TYPE_VOIDP,  # graphics : GpGraphics* in/out
    Fiddle::TYPE_INT,  # unit : Unit
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipSetPageUnit(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        unit: i32  // Unit
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipSetPageUnit(IntPtr graphics, int unit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipSetPageUnit' -Namespace Win32 -PassThru
# $api::GdipSetPageUnit(graphics, unit)

#uselib "gdiplus.dll"
#func global GdipSetPageUnit "GdipSetPageUnit" sptr, sptr
; GdipSetPageUnit varptr(graphics), unit   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; unit : Unit -> "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 GdipSetPageUnit "GdipSetPageUnit" var, int
; res = GdipSetPageUnit(graphics, unit)
; graphics : GpGraphics* in/out -> "var"
; unit : Unit -> "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。

; Status GdipSetPageUnit(GpGraphics* graphics, Unit unit)
#uselib "gdiplus.dll"
#cfunc global GdipSetPageUnit "GdipSetPageUnit" var, int
; res = GdipSetPageUnit(graphics, unit)
; graphics : GpGraphics* in/out -> "var"
; unit : Unit -> "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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipSetPageUnit = gdiplus.NewProc("GdipSetPageUnit")
)

// graphics (GpGraphics* in/out), unit (Unit)
r1, _, err := procGdipSetPageUnit.Call(
	uintptr(graphics),
	uintptr(unit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipSetPageUnit(
  graphics: Pointer;   // GpGraphics* in/out
  unit: Integer   // Unit
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipSetPageUnit';

result := DllCall("gdiplus\GdipSetPageUnit"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Int", unit   ; Unit
    , "Int")   ; return: Status

●GdipSetPageUnit(graphics, unit) = DLL("gdiplus.dll", "int GdipSetPageUnit(void*, int)")
# 呼び出し: GdipSetPageUnit(graphics, unit)
# graphics : GpGraphics* in/out -> "void*"
# unit : Unit -> "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)。