GdipIsVisiblePoint

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

Status GdipIsVisiblePoint(
    GpGraphics* graphics,
    FLOAT x,
    FLOAT y,
    BOOL* result
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipIsVisiblePoint(
    graphics As IntPtr,   ' GpGraphics* in/out
    x As Single,   ' FLOAT
    y As Single,   ' FLOAT
    ByRef result As Integer   ' BOOL* in/out
) As Integer
End Function

' graphics : GpGraphics* in/out
' x : FLOAT
' y : FLOAT
' result : BOOL* in/out
Declare PtrSafe Function GdipIsVisiblePoint Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal x As Single, _
    ByVal y As Single, _
    ByRef result 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

GdipIsVisiblePoint = ctypes.windll.gdiplus.GdipIsVisiblePoint
GdipIsVisiblePoint.restype = ctypes.c_int
GdipIsVisiblePoint.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_float,  # x : FLOAT
    ctypes.c_float,  # y : FLOAT
    ctypes.c_void_p,  # result : BOOL* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipIsVisiblePoint = Fiddle::Function.new(
  lib['GdipIsVisiblePoint'],
  [
    Fiddle::TYPE_VOIDP,  # graphics : GpGraphics* in/out
    Fiddle::TYPE_FLOAT,  # x : FLOAT
    Fiddle::TYPE_FLOAT,  # y : FLOAT
    Fiddle::TYPE_VOIDP,  # result : BOOL* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipIsVisiblePoint(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        x: f32,  // FLOAT
        y: f32,  // FLOAT
        result: *mut i32  // BOOL* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipIsVisiblePoint(IntPtr graphics, float x, float y, ref int result);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipIsVisiblePoint' -Namespace Win32 -PassThru
# $api::GdipIsVisiblePoint(graphics, x, y, result)

#uselib "gdiplus.dll"
#func global GdipIsVisiblePoint "GdipIsVisiblePoint" sptr, float, float, sptr
; GdipIsVisiblePoint varptr(graphics), x, y, result   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; x : FLOAT -> "float"
; y : FLOAT -> "float"
; result : BOOL* 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 GdipIsVisiblePoint "GdipIsVisiblePoint" var, float, float, int
; res = GdipIsVisiblePoint(graphics, x, y, result)
; graphics : GpGraphics* in/out -> "var"
; x : FLOAT -> "float"
; y : FLOAT -> "float"
; result : BOOL* in/out -> "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 GdipIsVisiblePoint(GpGraphics* graphics, FLOAT x, FLOAT y, BOOL* result)
#uselib "gdiplus.dll"
#cfunc global GdipIsVisiblePoint "GdipIsVisiblePoint" var, float, float, int
; res = GdipIsVisiblePoint(graphics, x, y, result)
; graphics : GpGraphics* in/out -> "var"
; x : FLOAT -> "float"
; y : FLOAT -> "float"
; result : BOOL* in/out -> "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")
	procGdipIsVisiblePoint = gdiplus.NewProc("GdipIsVisiblePoint")
)

// graphics (GpGraphics* in/out), x (FLOAT), y (FLOAT), result (BOOL* in/out)
r1, _, err := procGdipIsVisiblePoint.Call(
	uintptr(graphics),
	uintptr(math.Float32bits(x)),
	uintptr(math.Float32bits(y)),
	uintptr(result),
)
_ = 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 GdipIsVisiblePoint(
  graphics: Pointer;   // GpGraphics* in/out
  x: Single;   // FLOAT
  y: Single;   // FLOAT
  result: Pointer   // BOOL* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipIsVisiblePoint';

result := DllCall("gdiplus\GdipIsVisiblePoint"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Float", x   ; FLOAT
    , "Float", y   ; FLOAT
    , "Ptr", result   ; BOOL* in/out
    , "Int")   ; return: Status

●GdipIsVisiblePoint(graphics, x, y, result) = DLL("gdiplus.dll", "int GdipIsVisiblePoint(void*, float, float, void*)")
# 呼び出し: GdipIsVisiblePoint(graphics, x, y, result)
# graphics : GpGraphics* in/out -> "void*"
# x : FLOAT -> "float"
# y : FLOAT -> "float"
# result : BOOL* 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)。