GdipInitializePalette

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

Status GdipInitializePalette(
    ColorPalette* palette,
    PaletteType palettetype,
    INT optimalColors,
    BOOL useTransparentColor,
    GpBitmap* bitmap
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipInitializePalette(
    palette As IntPtr,   ' ColorPalette* in/out
    palettetype As Integer,   ' PaletteType
    optimalColors As Integer,   ' INT
    useTransparentColor As Boolean,   ' BOOL
    bitmap As IntPtr   ' GpBitmap* in/out
) As Integer
End Function

' palette : ColorPalette* in/out
' palettetype : PaletteType
' optimalColors : INT
' useTransparentColor : BOOL
' bitmap : GpBitmap* in/out
Declare PtrSafe Function GdipInitializePalette Lib "gdiplus" ( _
    ByVal palette As LongPtr, _
    ByVal palettetype As Long, _
    ByVal optimalColors As Long, _
    ByVal useTransparentColor As Long, _
    ByVal bitmap 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

GdipInitializePalette = ctypes.windll.gdiplus.GdipInitializePalette
GdipInitializePalette.restype = ctypes.c_int
GdipInitializePalette.argtypes = [
    ctypes.c_void_p,  # palette : ColorPalette* in/out
    ctypes.c_int,  # palettetype : PaletteType
    ctypes.c_int,  # optimalColors : INT
    wintypes.BOOL,  # useTransparentColor : BOOL
    ctypes.c_void_p,  # bitmap : GpBitmap* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipInitializePalette = Fiddle::Function.new(
  lib['GdipInitializePalette'],
  [
    Fiddle::TYPE_VOIDP,  # palette : ColorPalette* in/out
    Fiddle::TYPE_INT,  # palettetype : PaletteType
    Fiddle::TYPE_INT,  # optimalColors : INT
    Fiddle::TYPE_INT,  # useTransparentColor : BOOL
    Fiddle::TYPE_VOIDP,  # bitmap : GpBitmap* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipInitializePalette(
        palette: *mut ColorPalette,  // ColorPalette* in/out
        palettetype: i32,  // PaletteType
        optimalColors: i32,  // INT
        useTransparentColor: i32,  // BOOL
        bitmap: *mut GpBitmap  // GpBitmap* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipInitializePalette(IntPtr palette, int palettetype, int optimalColors, bool useTransparentColor, IntPtr bitmap);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipInitializePalette' -Namespace Win32 -PassThru
# $api::GdipInitializePalette(palette, palettetype, optimalColors, useTransparentColor, bitmap)

#uselib "gdiplus.dll"
#func global GdipInitializePalette "GdipInitializePalette" sptr, sptr, sptr, sptr, sptr
; GdipInitializePalette varptr(palette), palettetype, optimalColors, useTransparentColor, varptr(bitmap)   ; 戻り値は stat
; palette : ColorPalette* in/out -> "sptr"
; palettetype : PaletteType -> "sptr"
; optimalColors : INT -> "sptr"
; useTransparentColor : BOOL -> "sptr"
; bitmap : GpBitmap* 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 GdipInitializePalette "GdipInitializePalette" var, int, int, int, var
; res = GdipInitializePalette(palette, palettetype, optimalColors, useTransparentColor, bitmap)
; palette : ColorPalette* in/out -> "var"
; palettetype : PaletteType -> "int"
; optimalColors : INT -> "int"
; useTransparentColor : BOOL -> "int"
; bitmap : GpBitmap* 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 GdipInitializePalette(ColorPalette* palette, PaletteType palettetype, INT optimalColors, BOOL useTransparentColor, GpBitmap* bitmap)
#uselib "gdiplus.dll"
#cfunc global GdipInitializePalette "GdipInitializePalette" var, int, int, int, var
; res = GdipInitializePalette(palette, palettetype, optimalColors, useTransparentColor, bitmap)
; palette : ColorPalette* in/out -> "var"
; palettetype : PaletteType -> "int"
; optimalColors : INT -> "int"
; useTransparentColor : BOOL -> "int"
; bitmap : GpBitmap* 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")
	procGdipInitializePalette = gdiplus.NewProc("GdipInitializePalette")
)

// palette (ColorPalette* in/out), palettetype (PaletteType), optimalColors (INT), useTransparentColor (BOOL), bitmap (GpBitmap* in/out)
r1, _, err := procGdipInitializePalette.Call(
	uintptr(palette),
	uintptr(palettetype),
	uintptr(optimalColors),
	uintptr(useTransparentColor),
	uintptr(bitmap),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipInitializePalette(
  palette: Pointer;   // ColorPalette* in/out
  palettetype: Integer;   // PaletteType
  optimalColors: Integer;   // INT
  useTransparentColor: BOOL;   // BOOL
  bitmap: Pointer   // GpBitmap* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipInitializePalette';

result := DllCall("gdiplus\GdipInitializePalette"
    , "Ptr", palette   ; ColorPalette* in/out
    , "Int", palettetype   ; PaletteType
    , "Int", optimalColors   ; INT
    , "Int", useTransparentColor   ; BOOL
    , "Ptr", bitmap   ; GpBitmap* in/out
    , "Int")   ; return: Status

●GdipInitializePalette(palette, palettetype, optimalColors, useTransparentColor, bitmap) = DLL("gdiplus.dll", "int GdipInitializePalette(void*, int, int, bool, void*)")
# 呼び出し: GdipInitializePalette(palette, palettetype, optimalColors, useTransparentColor, bitmap)
# palette : ColorPalette* in/out -> "void*"
# palettetype : PaletteType -> "int"
# optimalColors : INT -> "int"
# useTransparentColor : BOOL -> "bool"
# bitmap : GpBitmap* 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)。