GdipTranslateLineTransform

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

Status GdipTranslateLineTransform(
    GpLineGradient* brush,
    FLOAT dx,
    FLOAT dy,
    MatrixOrder order
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipTranslateLineTransform(
    brush As IntPtr,   ' GpLineGradient* in/out
    dx As Single,   ' FLOAT
    dy As Single,   ' FLOAT
    order As Integer   ' MatrixOrder
) As Integer
End Function

' brush : GpLineGradient* in/out
' dx : FLOAT
' dy : FLOAT
' order : MatrixOrder
Declare PtrSafe Function GdipTranslateLineTransform Lib "gdiplus" ( _
    ByVal brush As LongPtr, _
    ByVal dx As Single, _
    ByVal dy As Single, _
    ByVal order 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

GdipTranslateLineTransform = ctypes.windll.gdiplus.GdipTranslateLineTransform
GdipTranslateLineTransform.restype = ctypes.c_int
GdipTranslateLineTransform.argtypes = [
    ctypes.c_void_p,  # brush : GpLineGradient* in/out
    ctypes.c_float,  # dx : FLOAT
    ctypes.c_float,  # dy : FLOAT
    ctypes.c_int,  # order : MatrixOrder
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipTranslateLineTransform = Fiddle::Function.new(
  lib['GdipTranslateLineTransform'],
  [
    Fiddle::TYPE_VOIDP,  # brush : GpLineGradient* in/out
    Fiddle::TYPE_FLOAT,  # dx : FLOAT
    Fiddle::TYPE_FLOAT,  # dy : FLOAT
    Fiddle::TYPE_INT,  # order : MatrixOrder
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipTranslateLineTransform(
        brush: *mut GpLineGradient,  // GpLineGradient* in/out
        dx: f32,  // FLOAT
        dy: f32,  // FLOAT
        order: i32  // MatrixOrder
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipTranslateLineTransform(IntPtr brush, float dx, float dy, int order);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipTranslateLineTransform' -Namespace Win32 -PassThru
# $api::GdipTranslateLineTransform(brush, dx, dy, order)

#uselib "gdiplus.dll"
#func global GdipTranslateLineTransform "GdipTranslateLineTransform" sptr, float, float, sptr
; GdipTranslateLineTransform varptr(brush), dx, dy, order   ; 戻り値は stat
; brush : GpLineGradient* in/out -> "sptr"
; dx : FLOAT -> "float"
; dy : FLOAT -> "float"
; order : MatrixOrder -> "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 GdipTranslateLineTransform "GdipTranslateLineTransform" var, float, float, int
; res = GdipTranslateLineTransform(brush, dx, dy, order)
; brush : GpLineGradient* in/out -> "var"
; dx : FLOAT -> "float"
; dy : FLOAT -> "float"
; order : MatrixOrder -> "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 GdipTranslateLineTransform(GpLineGradient* brush, FLOAT dx, FLOAT dy, MatrixOrder order)
#uselib "gdiplus.dll"
#cfunc global GdipTranslateLineTransform "GdipTranslateLineTransform" var, float, float, int
; res = GdipTranslateLineTransform(brush, dx, dy, order)
; brush : GpLineGradient* in/out -> "var"
; dx : FLOAT -> "float"
; dy : FLOAT -> "float"
; order : MatrixOrder -> "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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipTranslateLineTransform = gdiplus.NewProc("GdipTranslateLineTransform")
)

// brush (GpLineGradient* in/out), dx (FLOAT), dy (FLOAT), order (MatrixOrder)
r1, _, err := procGdipTranslateLineTransform.Call(
	uintptr(brush),
	uintptr(math.Float32bits(dx)),
	uintptr(math.Float32bits(dy)),
	uintptr(order),
)
_ = 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 GdipTranslateLineTransform(
  brush: Pointer;   // GpLineGradient* in/out
  dx: Single;   // FLOAT
  dy: Single;   // FLOAT
  order: Integer   // MatrixOrder
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipTranslateLineTransform';

result := DllCall("gdiplus\GdipTranslateLineTransform"
    , "Ptr", brush   ; GpLineGradient* in/out
    , "Float", dx   ; FLOAT
    , "Float", dy   ; FLOAT
    , "Int", order   ; MatrixOrder
    , "Int")   ; return: Status

●GdipTranslateLineTransform(brush, dx, dy, order) = DLL("gdiplus.dll", "int GdipTranslateLineTransform(void*, float, float, int)")
# 呼び出し: GdipTranslateLineTransform(brush, dx, dy, order)
# brush : GpLineGradient* in/out -> "void*"
# dx : FLOAT -> "float"
# dy : FLOAT -> "float"
# order : MatrixOrder -> "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)。