LineDDA

// GDI32.dll
#include <windows.h>

BOOL LineDDA(
    INT xStart,
    INT yStart,
    INT xEnd,
    INT yEnd,
    LINEDDAPROC lpProc,
    LPARAM data   // optional
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function LineDDA(
    xStart As Integer,   ' INT
    yStart As Integer,   ' INT
    xEnd As Integer,   ' INT
    yEnd As Integer,   ' INT
    lpProc As IntPtr,   ' LINEDDAPROC
    data As IntPtr   ' LPARAM optional
) As Boolean
End Function

' xStart : INT
' yStart : INT
' xEnd : INT
' yEnd : INT
' lpProc : LINEDDAPROC
' data : LPARAM optional
Declare PtrSafe Function LineDDA Lib "gdi32" ( _
    ByVal xStart As Long, _
    ByVal yStart As Long, _
    ByVal xEnd As Long, _
    ByVal yEnd As Long, _
    ByVal lpProc As LongPtr, _
    ByVal data 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

LineDDA = ctypes.windll.gdi32.LineDDA
LineDDA.restype = wintypes.BOOL
LineDDA.argtypes = [
    ctypes.c_int,  # xStart : INT
    ctypes.c_int,  # yStart : INT
    ctypes.c_int,  # xEnd : INT
    ctypes.c_int,  # yEnd : INT
    ctypes.c_void_p,  # lpProc : LINEDDAPROC
    ctypes.c_ssize_t,  # data : LPARAM optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
LineDDA = Fiddle::Function.new(
  lib['LineDDA'],
  [
    Fiddle::TYPE_INT,  # xStart : INT
    Fiddle::TYPE_INT,  # yStart : INT
    Fiddle::TYPE_INT,  # xEnd : INT
    Fiddle::TYPE_INT,  # yEnd : INT
    Fiddle::TYPE_VOIDP,  # lpProc : LINEDDAPROC
    Fiddle::TYPE_INTPTR_T,  # data : LPARAM optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn LineDDA(
        xStart: i32,  // INT
        yStart: i32,  // INT
        xEnd: i32,  // INT
        yEnd: i32,  // INT
        lpProc: *const core::ffi::c_void,  // LINEDDAPROC
        data: isize  // LPARAM optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool LineDDA(int xStart, int yStart, int xEnd, int yEnd, IntPtr lpProc, IntPtr data);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_LineDDA' -Namespace Win32 -PassThru
# $api::LineDDA(xStart, yStart, xEnd, yEnd, lpProc, data)

#uselib "GDI32.dll"
#func global LineDDA "LineDDA" sptr, sptr, sptr, sptr, sptr, sptr
; LineDDA xStart, yStart, xEnd, yEnd, lpProc, data   ; 戻り値は stat
; xStart : INT -> "sptr"
; yStart : INT -> "sptr"
; xEnd : INT -> "sptr"
; yEnd : INT -> "sptr"
; lpProc : LINEDDAPROC -> "sptr"
; data : LPARAM optional -> "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 "GDI32.dll"
#cfunc global LineDDA "LineDDA" int, int, int, int, sptr, sptr
; res = LineDDA(xStart, yStart, xEnd, yEnd, lpProc, data)
; xStart : INT -> "int"
; yStart : INT -> "int"
; xEnd : INT -> "int"
; yEnd : INT -> "int"
; lpProc : LINEDDAPROC -> "sptr"
; data : LPARAM optional -> "sptr"

; BOOL LineDDA(INT xStart, INT yStart, INT xEnd, INT yEnd, LINEDDAPROC lpProc, LPARAM data)
#uselib "GDI32.dll"
#cfunc global LineDDA "LineDDA" int, int, int, int, intptr, intptr
; res = LineDDA(xStart, yStart, xEnd, yEnd, lpProc, data)
; xStart : INT -> "int"
; yStart : INT -> "int"
; xEnd : INT -> "int"
; yEnd : INT -> "int"
; lpProc : LINEDDAPROC -> "intptr"
; data : LPARAM optional -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procLineDDA = gdi32.NewProc("LineDDA")
)

// xStart (INT), yStart (INT), xEnd (INT), yEnd (INT), lpProc (LINEDDAPROC), data (LPARAM optional)
r1, _, err := procLineDDA.Call(
	uintptr(xStart),
	uintptr(yStart),
	uintptr(xEnd),
	uintptr(yEnd),
	uintptr(lpProc),
	uintptr(data),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function LineDDA(
  xStart: Integer;   // INT
  yStart: Integer;   // INT
  xEnd: Integer;   // INT
  yEnd: Integer;   // INT
  lpProc: Pointer;   // LINEDDAPROC
  data: NativeInt   // LPARAM optional
): BOOL; stdcall;
  external 'GDI32.dll' name 'LineDDA';

result := DllCall("GDI32\LineDDA"
    , "Int", xStart   ; INT
    , "Int", yStart   ; INT
    , "Int", xEnd   ; INT
    , "Int", yEnd   ; INT
    , "Ptr", lpProc   ; LINEDDAPROC
    , "Ptr", data   ; LPARAM optional
    , "Int")   ; return: BOOL

●LineDDA(xStart, yStart, xEnd, yEnd, lpProc, data) = DLL("GDI32.dll", "bool LineDDA(int, int, int, int, void*, int)")
# 呼び出し: LineDDA(xStart, yStart, xEnd, yEnd, lpProc, data)
# xStart : INT -> "int"
# yStart : INT -> "int"
# xEnd : INT -> "int"
# yEnd : INT -> "int"
# lpProc : LINEDDAPROC -> "void*"
# data : LPARAM optional -> "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)。