GdipSetCustomLineCapStrokeCaps

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

Status GdipSetCustomLineCapStrokeCaps(
    GpCustomLineCap* customCap,
    LineCap startCap,
    LineCap endCap
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipSetCustomLineCapStrokeCaps(
    customCap As IntPtr,   ' GpCustomLineCap* in/out
    startCap As Integer,   ' LineCap
    endCap As Integer   ' LineCap
) As Integer
End Function

' customCap : GpCustomLineCap* in/out
' startCap : LineCap
' endCap : LineCap
Declare PtrSafe Function GdipSetCustomLineCapStrokeCaps Lib "gdiplus" ( _
    ByVal customCap As LongPtr, _
    ByVal startCap As Long, _
    ByVal endCap 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

GdipSetCustomLineCapStrokeCaps = ctypes.windll.gdiplus.GdipSetCustomLineCapStrokeCaps
GdipSetCustomLineCapStrokeCaps.restype = ctypes.c_int
GdipSetCustomLineCapStrokeCaps.argtypes = [
    ctypes.c_void_p,  # customCap : GpCustomLineCap* in/out
    ctypes.c_int,  # startCap : LineCap
    ctypes.c_int,  # endCap : LineCap
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipSetCustomLineCapStrokeCaps = Fiddle::Function.new(
  lib['GdipSetCustomLineCapStrokeCaps'],
  [
    Fiddle::TYPE_VOIDP,  # customCap : GpCustomLineCap* in/out
    Fiddle::TYPE_INT,  # startCap : LineCap
    Fiddle::TYPE_INT,  # endCap : LineCap
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipSetCustomLineCapStrokeCaps(
        customCap: *mut GpCustomLineCap,  // GpCustomLineCap* in/out
        startCap: i32,  // LineCap
        endCap: i32  // LineCap
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipSetCustomLineCapStrokeCaps(IntPtr customCap, int startCap, int endCap);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipSetCustomLineCapStrokeCaps' -Namespace Win32 -PassThru
# $api::GdipSetCustomLineCapStrokeCaps(customCap, startCap, endCap)

#uselib "gdiplus.dll"
#func global GdipSetCustomLineCapStrokeCaps "GdipSetCustomLineCapStrokeCaps" sptr, sptr, sptr
; GdipSetCustomLineCapStrokeCaps varptr(customCap), startCap, endCap   ; 戻り値は stat
; customCap : GpCustomLineCap* in/out -> "sptr"
; startCap : LineCap -> "sptr"
; endCap : LineCap -> "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 GdipSetCustomLineCapStrokeCaps "GdipSetCustomLineCapStrokeCaps" var, int, int
; res = GdipSetCustomLineCapStrokeCaps(customCap, startCap, endCap)
; customCap : GpCustomLineCap* in/out -> "var"
; startCap : LineCap -> "int"
; endCap : LineCap -> "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 GdipSetCustomLineCapStrokeCaps(GpCustomLineCap* customCap, LineCap startCap, LineCap endCap)
#uselib "gdiplus.dll"
#cfunc global GdipSetCustomLineCapStrokeCaps "GdipSetCustomLineCapStrokeCaps" var, int, int
; res = GdipSetCustomLineCapStrokeCaps(customCap, startCap, endCap)
; customCap : GpCustomLineCap* in/out -> "var"
; startCap : LineCap -> "int"
; endCap : LineCap -> "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")
	procGdipSetCustomLineCapStrokeCaps = gdiplus.NewProc("GdipSetCustomLineCapStrokeCaps")
)

// customCap (GpCustomLineCap* in/out), startCap (LineCap), endCap (LineCap)
r1, _, err := procGdipSetCustomLineCapStrokeCaps.Call(
	uintptr(customCap),
	uintptr(startCap),
	uintptr(endCap),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipSetCustomLineCapStrokeCaps(
  customCap: Pointer;   // GpCustomLineCap* in/out
  startCap: Integer;   // LineCap
  endCap: Integer   // LineCap
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipSetCustomLineCapStrokeCaps';

result := DllCall("gdiplus\GdipSetCustomLineCapStrokeCaps"
    , "Ptr", customCap   ; GpCustomLineCap* in/out
    , "Int", startCap   ; LineCap
    , "Int", endCap   ; LineCap
    , "Int")   ; return: Status

●GdipSetCustomLineCapStrokeCaps(customCap, startCap, endCap) = DLL("gdiplus.dll", "int GdipSetCustomLineCapStrokeCaps(void*, int, int)")
# 呼び出し: GdipSetCustomLineCapStrokeCaps(customCap, startCap, endCap)
# customCap : GpCustomLineCap* in/out -> "void*"
# startCap : LineCap -> "int"
# endCap : LineCap -> "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)。