GetTextExtentPoint32A

// GDI32.dll  (ANSI / -A)
#include <windows.h>

BOOL GetTextExtentPoint32A(
    HDC hdc,
    LPCSTR lpString,
    INT c,
    SIZE* psizl
);

<DllImport("GDI32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetTextExtentPoint32A(
    hdc As IntPtr,   ' HDC
    <MarshalAs(UnmanagedType.LPStr)> lpString As String,   ' LPCSTR
    c As Integer,   ' INT
    psizl As IntPtr   ' SIZE* out
) As Boolean
End Function

' hdc : HDC
' lpString : LPCSTR
' c : INT
' psizl : SIZE* out
Declare PtrSafe Function GetTextExtentPoint32A Lib "gdi32" ( _
    ByVal hdc As LongPtr, _
    ByVal lpString As String, _
    ByVal c As Long, _
    ByVal psizl 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

GetTextExtentPoint32A = ctypes.windll.gdi32.GetTextExtentPoint32A
GetTextExtentPoint32A.restype = wintypes.BOOL
GetTextExtentPoint32A.argtypes = [
    wintypes.HANDLE,  # hdc : HDC
    wintypes.LPCSTR,  # lpString : LPCSTR
    ctypes.c_int,  # c : INT
    ctypes.c_void_p,  # psizl : SIZE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GetTextExtentPoint32A = Fiddle::Function.new(
  lib['GetTextExtentPoint32A'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_VOIDP,  # lpString : LPCSTR
    Fiddle::TYPE_INT,  # c : INT
    Fiddle::TYPE_VOIDP,  # psizl : SIZE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn GetTextExtentPoint32A(
        hdc: *mut core::ffi::c_void,  // HDC
        lpString: *const u8,  // LPCSTR
        c: i32,  // INT
        psizl: *mut SIZE  // SIZE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll", CharSet = CharSet.Ansi)]
public static extern bool GetTextExtentPoint32A(IntPtr hdc, [MarshalAs(UnmanagedType.LPStr)] string lpString, int c, IntPtr psizl);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GetTextExtentPoint32A' -Namespace Win32 -PassThru
# $api::GetTextExtentPoint32A(hdc, lpString, c, psizl)

#uselib "GDI32.dll"
#func global GetTextExtentPoint32A "GetTextExtentPoint32A" sptr, sptr, sptr, sptr
; GetTextExtentPoint32A hdc, lpString, c, varptr(psizl)   ; 戻り値は stat
; hdc : HDC -> "sptr"
; lpString : LPCSTR -> "sptr"
; c : INT -> "sptr"
; psizl : SIZE* 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 "GDI32.dll"
#cfunc global GetTextExtentPoint32A "GetTextExtentPoint32A" sptr, str, int, var
; res = GetTextExtentPoint32A(hdc, lpString, c, psizl)
; hdc : HDC -> "sptr"
; lpString : LPCSTR -> "str"
; c : INT -> "int"
; psizl : SIZE* 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。

; BOOL GetTextExtentPoint32A(HDC hdc, LPCSTR lpString, INT c, SIZE* psizl)
#uselib "GDI32.dll"
#cfunc global GetTextExtentPoint32A "GetTextExtentPoint32A" intptr, str, int, var
; res = GetTextExtentPoint32A(hdc, lpString, c, psizl)
; hdc : HDC -> "intptr"
; lpString : LPCSTR -> "str"
; c : INT -> "int"
; psizl : SIZE* 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 (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procGetTextExtentPoint32A = gdi32.NewProc("GetTextExtentPoint32A")
)

// hdc (HDC), lpString (LPCSTR), c (INT), psizl (SIZE* out)
r1, _, err := procGetTextExtentPoint32A.Call(
	uintptr(hdc),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpString))),
	uintptr(c),
	uintptr(psizl),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetTextExtentPoint32A(
  hdc: THandle;   // HDC
  lpString: PAnsiChar;   // LPCSTR
  c: Integer;   // INT
  psizl: Pointer   // SIZE* out
): BOOL; stdcall;
  external 'GDI32.dll' name 'GetTextExtentPoint32A';

result := DllCall("GDI32\GetTextExtentPoint32A"
    , "Ptr", hdc   ; HDC
    , "AStr", lpString   ; LPCSTR
    , "Int", c   ; INT
    , "Ptr", psizl   ; SIZE* out
    , "Int")   ; return: BOOL

●GetTextExtentPoint32A(hdc, lpString, c, psizl) = DLL("GDI32.dll", "bool GetTextExtentPoint32A(void*, char*, int, void*)")
# 呼び出し: GetTextExtentPoint32A(hdc, lpString, c, psizl)
# hdc : HDC -> "void*"
# lpString : LPCSTR -> "char*"
# c : INT -> "int"
# psizl : SIZE* 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)。