DeletePrinterDataExA

// winspool.drv  (ANSI / -A)
#include <windows.h>

DWORD DeletePrinterDataExA(
    PRINTER_HANDLE hPrinter,
    LPCSTR pKeyName,
    LPCSTR pValueName
);

<DllImport("winspool.drv", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function DeletePrinterDataExA(
    hPrinter As PRINTER_HANDLE,   ' PRINTER_HANDLE
    <MarshalAs(UnmanagedType.LPStr)> pKeyName As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> pValueName As String   ' LPCSTR
) As UInteger
End Function

' hPrinter : PRINTER_HANDLE
' pKeyName : LPCSTR
' pValueName : LPCSTR
Declare PtrSafe Function DeletePrinterDataExA Lib "winspool.drv" ( _
    ByVal hPrinter As LongPtr, _
    ByVal pKeyName As String, _
    ByVal pValueName As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DeletePrinterDataExA = ctypes.windll.LoadLibrary("winspool.drv").DeletePrinterDataExA
DeletePrinterDataExA.restype = wintypes.DWORD
DeletePrinterDataExA.argtypes = [
    PRINTER_HANDLE,  # hPrinter : PRINTER_HANDLE
    wintypes.LPCSTR,  # pKeyName : LPCSTR
    wintypes.LPCSTR,  # pValueName : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
DeletePrinterDataExA = Fiddle::Function.new(
  lib['DeletePrinterDataExA'],
  [
    Fiddle::TYPE_VOIDP,  # hPrinter : PRINTER_HANDLE
    Fiddle::TYPE_VOIDP,  # pKeyName : LPCSTR
    Fiddle::TYPE_VOIDP,  # pValueName : LPCSTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "winspool.drv")]
extern "system" {
    fn DeletePrinterDataExA(
        hPrinter: PRINTER_HANDLE,  // PRINTER_HANDLE
        pKeyName: *const u8,  // LPCSTR
        pValueName: *const u8  // LPCSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("winspool.drv", CharSet = CharSet.Ansi)]
public static extern uint DeletePrinterDataExA(PRINTER_HANDLE hPrinter, [MarshalAs(UnmanagedType.LPStr)] string pKeyName, [MarshalAs(UnmanagedType.LPStr)] string pValueName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_DeletePrinterDataExA' -Namespace Win32 -PassThru
# $api::DeletePrinterDataExA(hPrinter, pKeyName, pValueName)

#uselib "winspool.drv"
#func global DeletePrinterDataExA "DeletePrinterDataExA" sptr, sptr, sptr
; DeletePrinterDataExA hPrinter, pKeyName, pValueName   ; 戻り値は stat
; hPrinter : PRINTER_HANDLE -> "sptr"
; pKeyName : LPCSTR -> "sptr"
; pValueName : LPCSTR -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "winspool.drv"
#cfunc global DeletePrinterDataExA "DeletePrinterDataExA" int, str, str
; res = DeletePrinterDataExA(hPrinter, pKeyName, pValueName)
; hPrinter : PRINTER_HANDLE -> "int"
; pKeyName : LPCSTR -> "str"
; pValueName : LPCSTR -> "str"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; DWORD DeletePrinterDataExA(PRINTER_HANDLE hPrinter, LPCSTR pKeyName, LPCSTR pValueName)
#uselib "winspool.drv"
#cfunc global DeletePrinterDataExA "DeletePrinterDataExA" int, str, str
; res = DeletePrinterDataExA(hPrinter, pKeyName, pValueName)
; hPrinter : PRINTER_HANDLE -> "int"
; pKeyName : LPCSTR -> "str"
; pValueName : LPCSTR -> "str"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procDeletePrinterDataExA = winspool_drv.NewProc("DeletePrinterDataExA")
)

// hPrinter (PRINTER_HANDLE), pKeyName (LPCSTR), pValueName (LPCSTR)
r1, _, err := procDeletePrinterDataExA.Call(
	uintptr(hPrinter),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pKeyName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pValueName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DeletePrinterDataExA(
  hPrinter: PRINTER_HANDLE;   // PRINTER_HANDLE
  pKeyName: PAnsiChar;   // LPCSTR
  pValueName: PAnsiChar   // LPCSTR
): DWORD; stdcall;
  external 'winspool.drv' name 'DeletePrinterDataExA';

result := DllCall("winspool.drv\DeletePrinterDataExA"
    , "Ptr", hPrinter   ; PRINTER_HANDLE
    , "AStr", pKeyName   ; LPCSTR
    , "AStr", pValueName   ; LPCSTR
    , "UInt")   ; return: DWORD

●DeletePrinterDataExA(hPrinter, pKeyName, pValueName) = DLL("winspool.drv", "dword DeletePrinterDataExA(void*, char*, char*)")
# 呼び出し: DeletePrinterDataExA(hPrinter, pKeyName, pValueName)
# hPrinter : PRINTER_HANDLE -> "void*"
# pKeyName : LPCSTR -> "char*"
# pValueName : 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)。