GdipBitmapSetResolution

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

Status GdipBitmapSetResolution(
    GpBitmap* bitmap,
    FLOAT xdpi,
    FLOAT ydpi
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipBitmapSetResolution(
    bitmap As IntPtr,   ' GpBitmap* in/out
    xdpi As Single,   ' FLOAT
    ydpi As Single   ' FLOAT
) As Integer
End Function

' bitmap : GpBitmap* in/out
' xdpi : FLOAT
' ydpi : FLOAT
Declare PtrSafe Function GdipBitmapSetResolution Lib "gdiplus" ( _
    ByVal bitmap As LongPtr, _
    ByVal xdpi As Single, _
    ByVal ydpi As Single) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipBitmapSetResolution = ctypes.windll.gdiplus.GdipBitmapSetResolution
GdipBitmapSetResolution.restype = ctypes.c_int
GdipBitmapSetResolution.argtypes = [
    ctypes.c_void_p,  # bitmap : GpBitmap* in/out
    ctypes.c_float,  # xdpi : FLOAT
    ctypes.c_float,  # ydpi : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipBitmapSetResolution = Fiddle::Function.new(
  lib['GdipBitmapSetResolution'],
  [
    Fiddle::TYPE_VOIDP,  # bitmap : GpBitmap* in/out
    Fiddle::TYPE_FLOAT,  # xdpi : FLOAT
    Fiddle::TYPE_FLOAT,  # ydpi : FLOAT
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipBitmapSetResolution(
        bitmap: *mut GpBitmap,  // GpBitmap* in/out
        xdpi: f32,  // FLOAT
        ydpi: f32  // FLOAT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipBitmapSetResolution(IntPtr bitmap, float xdpi, float ydpi);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipBitmapSetResolution' -Namespace Win32 -PassThru
# $api::GdipBitmapSetResolution(bitmap, xdpi, ydpi)

#uselib "gdiplus.dll"
#func global GdipBitmapSetResolution "GdipBitmapSetResolution" sptr, float, float
; GdipBitmapSetResolution varptr(bitmap), xdpi, ydpi   ; 戻り値は stat
; bitmap : GpBitmap* in/out -> "sptr"
; xdpi : FLOAT -> "float"
; ydpi : FLOAT -> "float"
; ※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 GdipBitmapSetResolution "GdipBitmapSetResolution" var, float, float
; res = GdipBitmapSetResolution(bitmap, xdpi, ydpi)
; bitmap : GpBitmap* in/out -> "var"
; xdpi : FLOAT -> "float"
; ydpi : FLOAT -> "float"
; ※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 GdipBitmapSetResolution(GpBitmap* bitmap, FLOAT xdpi, FLOAT ydpi)
#uselib "gdiplus.dll"
#cfunc global GdipBitmapSetResolution "GdipBitmapSetResolution" var, float, float
; res = GdipBitmapSetResolution(bitmap, xdpi, ydpi)
; bitmap : GpBitmap* in/out -> "var"
; xdpi : FLOAT -> "float"
; ydpi : FLOAT -> "float"
; ※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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipBitmapSetResolution = gdiplus.NewProc("GdipBitmapSetResolution")
)

// bitmap (GpBitmap* in/out), xdpi (FLOAT), ydpi (FLOAT)
r1, _, err := procGdipBitmapSetResolution.Call(
	uintptr(bitmap),
	uintptr(math.Float32bits(xdpi)),
	uintptr(math.Float32bits(ydpi)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

function GdipBitmapSetResolution(
  bitmap: Pointer;   // GpBitmap* in/out
  xdpi: Single;   // FLOAT
  ydpi: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipBitmapSetResolution';

result := DllCall("gdiplus\GdipBitmapSetResolution"
    , "Ptr", bitmap   ; GpBitmap* in/out
    , "Float", xdpi   ; FLOAT
    , "Float", ydpi   ; FLOAT
    , "Int")   ; return: Status

●GdipBitmapSetResolution(bitmap, xdpi, ydpi) = DLL("gdiplus.dll", "int GdipBitmapSetResolution(void*, float, float)")
# 呼び出し: GdipBitmapSetResolution(bitmap, xdpi, ydpi)
# bitmap : GpBitmap* in/out -> "void*"
# xdpi : FLOAT -> "float"
# ydpi : FLOAT -> "float"
# 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)。