GdipGetTextContrast

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

Status GdipGetTextContrast(
    GpGraphics* graphics,
    DWORD* contrast
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetTextContrast(
    graphics As IntPtr,   ' GpGraphics* in/out
    ByRef contrast As UInteger   ' DWORD* in/out
) As Integer
End Function

' graphics : GpGraphics* in/out
' contrast : DWORD* in/out
Declare PtrSafe Function GdipGetTextContrast Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByRef contrast 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

GdipGetTextContrast = ctypes.windll.gdiplus.GdipGetTextContrast
GdipGetTextContrast.restype = ctypes.c_int
GdipGetTextContrast.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.POINTER(wintypes.DWORD),  # contrast : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetTextContrast(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        contrast: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "gdiplus.dll"
#func global GdipGetTextContrast "GdipGetTextContrast" sptr, sptr
; GdipGetTextContrast varptr(graphics), varptr(contrast)   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; contrast : 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 GdipGetTextContrast "GdipGetTextContrast" var, var
; res = GdipGetTextContrast(graphics, contrast)
; graphics : GpGraphics* in/out -> "var"
; contrast : 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 GdipGetTextContrast(GpGraphics* graphics, DWORD* contrast)
#uselib "gdiplus.dll"
#cfunc global GdipGetTextContrast "GdipGetTextContrast" var, var
; res = GdipGetTextContrast(graphics, contrast)
; graphics : GpGraphics* in/out -> "var"
; contrast : 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")
	procGdipGetTextContrast = gdiplus.NewProc("GdipGetTextContrast")
)

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

function GdipGetTextContrast(
  graphics: Pointer;   // GpGraphics* in/out
  contrast: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetTextContrast';

result := DllCall("gdiplus\GdipGetTextContrast"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Ptr", contrast   ; DWORD* in/out
    , "Int")   ; return: Status

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