wglGetProcAddress

// OPENGL32.dll
#include <windows.h>

PROC wglGetProcAddress(
    LPCSTR param0
);

<DllImport("OPENGL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function wglGetProcAddress(
    <MarshalAs(UnmanagedType.LPStr)> param0 As String   ' LPCSTR
) As IntPtr
End Function

' param0 : LPCSTR
Declare PtrSafe Function wglGetProcAddress Lib "opengl32" ( _
    ByVal param0 As String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

wglGetProcAddress = ctypes.windll.opengl32.wglGetProcAddress
wglGetProcAddress.restype = ctypes.c_void_p
wglGetProcAddress.argtypes = [
    wintypes.LPCSTR,  # param0 : LPCSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
wglGetProcAddress = Fiddle::Function.new(
  lib['wglGetProcAddress'],
  [
    Fiddle::TYPE_VOIDP,  # param0 : LPCSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "opengl32")]
extern "system" {
    fn wglGetProcAddress(
        param0: *const u8  // LPCSTR
    ) -> *const core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll", SetLastError = true)]
public static extern IntPtr wglGetProcAddress([MarshalAs(UnmanagedType.LPStr)] string param0);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_wglGetProcAddress' -Namespace Win32 -PassThru
# $api::wglGetProcAddress(param0)

#uselib "OPENGL32.dll"
#func global wglGetProcAddress "wglGetProcAddress" sptr
; wglGetProcAddress param0   ; 戻り値は stat
; param0 : LPCSTR -> "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 "OPENGL32.dll"
#cfunc global wglGetProcAddress "wglGetProcAddress" str
; res = wglGetProcAddress(param0)
; param0 : LPCSTR -> "str"

; PROC wglGetProcAddress(LPCSTR param0)
#uselib "OPENGL32.dll"
#cfunc global wglGetProcAddress "wglGetProcAddress" str
; res = wglGetProcAddress(param0)
; param0 : LPCSTR -> "str"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procwglGetProcAddress = opengl32.NewProc("wglGetProcAddress")
)

// param0 (LPCSTR)
r1, _, err := procwglGetProcAddress.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(param0))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // PROC

function wglGetProcAddress(
  param0: PAnsiChar   // LPCSTR
): Pointer; stdcall;
  external 'OPENGL32.dll' name 'wglGetProcAddress';

result := DllCall("OPENGL32\wglGetProcAddress"
    , "AStr", param0   ; LPCSTR
    , "Ptr")   ; return: PROC

●wglGetProcAddress(param0) = DLL("OPENGL32.dll", "void* wglGetProcAddress(char*)")
# 呼び出し: wglGetProcAddress(param0)
# param0 : LPCSTR -> "char*"
# 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)。