DeletePrinterDriverExW

// winspool.drv  (Unicode / -W)
#include <windows.h>

BOOL DeletePrinterDriverExW(
    LPCWSTR pName,   // optional
    LPCWSTR pEnvironment,   // optional
    LPCWSTR pDriverName,
    DWORD dwDeleteFlag,
    DWORD dwVersionFlag
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DeletePrinterDriverExW(
    <MarshalAs(UnmanagedType.LPWStr)> pName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pEnvironment As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pDriverName As String,   ' LPCWSTR
    dwDeleteFlag As UInteger,   ' DWORD
    dwVersionFlag As UInteger   ' DWORD
) As Boolean
End Function

' pName : LPCWSTR optional
' pEnvironment : LPCWSTR optional
' pDriverName : LPCWSTR
' dwDeleteFlag : DWORD
' dwVersionFlag : DWORD
Declare PtrSafe Function DeletePrinterDriverExW Lib "winspool.drv" ( _
    ByVal pName As LongPtr, _
    ByVal pEnvironment As LongPtr, _
    ByVal pDriverName As LongPtr, _
    ByVal dwDeleteFlag As Long, _
    ByVal dwVersionFlag As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DeletePrinterDriverExW = ctypes.windll.LoadLibrary("winspool.drv").DeletePrinterDriverExW
DeletePrinterDriverExW.restype = wintypes.BOOL
DeletePrinterDriverExW.argtypes = [
    wintypes.LPCWSTR,  # pName : LPCWSTR optional
    wintypes.LPCWSTR,  # pEnvironment : LPCWSTR optional
    wintypes.LPCWSTR,  # pDriverName : LPCWSTR
    wintypes.DWORD,  # dwDeleteFlag : DWORD
    wintypes.DWORD,  # dwVersionFlag : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
DeletePrinterDriverExW = Fiddle::Function.new(
  lib['DeletePrinterDriverExW'],
  [
    Fiddle::TYPE_VOIDP,  # pName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pEnvironment : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pDriverName : LPCWSTR
    -Fiddle::TYPE_INT,  # dwDeleteFlag : DWORD
    -Fiddle::TYPE_INT,  # dwVersionFlag : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn DeletePrinterDriverExW(
        pName: *const u16,  // LPCWSTR optional
        pEnvironment: *const u16,  // LPCWSTR optional
        pDriverName: *const u16,  // LPCWSTR
        dwDeleteFlag: u32,  // DWORD
        dwVersionFlag: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Unicode)]
public static extern bool DeletePrinterDriverExW([MarshalAs(UnmanagedType.LPWStr)] string pName, [MarshalAs(UnmanagedType.LPWStr)] string pEnvironment, [MarshalAs(UnmanagedType.LPWStr)] string pDriverName, uint dwDeleteFlag, uint dwVersionFlag);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_DeletePrinterDriverExW' -Namespace Win32 -PassThru
# $api::DeletePrinterDriverExW(pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag)

#uselib "winspool.drv"
#func global DeletePrinterDriverExW "DeletePrinterDriverExW" wptr, wptr, wptr, wptr, wptr
; DeletePrinterDriverExW pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag   ; 戻り値は stat
; pName : LPCWSTR optional -> "wptr"
; pEnvironment : LPCWSTR optional -> "wptr"
; pDriverName : LPCWSTR -> "wptr"
; dwDeleteFlag : DWORD -> "wptr"
; dwVersionFlag : DWORD -> "wptr"
; ※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 DeletePrinterDriverExW "DeletePrinterDriverExW" wstr, wstr, wstr, int, int
; res = DeletePrinterDriverExW(pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag)
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; pDriverName : LPCWSTR -> "wstr"
; dwDeleteFlag : DWORD -> "int"
; dwVersionFlag : DWORD -> "int"

; BOOL DeletePrinterDriverExW(LPCWSTR pName, LPCWSTR pEnvironment, LPCWSTR pDriverName, DWORD dwDeleteFlag, DWORD dwVersionFlag)
#uselib "winspool.drv"
#cfunc global DeletePrinterDriverExW "DeletePrinterDriverExW" wstr, wstr, wstr, int, int
; res = DeletePrinterDriverExW(pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag)
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; pDriverName : LPCWSTR -> "wstr"
; dwDeleteFlag : DWORD -> "int"
; dwVersionFlag : DWORD -> "int"

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

var (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procDeletePrinterDriverExW = winspool_drv.NewProc("DeletePrinterDriverExW")
)

// pName (LPCWSTR optional), pEnvironment (LPCWSTR optional), pDriverName (LPCWSTR), dwDeleteFlag (DWORD), dwVersionFlag (DWORD)
r1, _, err := procDeletePrinterDriverExW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pEnvironment))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pDriverName))),
	uintptr(dwDeleteFlag),
	uintptr(dwVersionFlag),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function DeletePrinterDriverExW(
  pName: PWideChar;   // LPCWSTR optional
  pEnvironment: PWideChar;   // LPCWSTR optional
  pDriverName: PWideChar;   // LPCWSTR
  dwDeleteFlag: DWORD;   // DWORD
  dwVersionFlag: DWORD   // DWORD
): BOOL; stdcall;
  external 'winspool.drv' name 'DeletePrinterDriverExW';

result := DllCall("winspool.drv\DeletePrinterDriverExW"
    , "WStr", pName   ; LPCWSTR optional
    , "WStr", pEnvironment   ; LPCWSTR optional
    , "WStr", pDriverName   ; LPCWSTR
    , "UInt", dwDeleteFlag   ; DWORD
    , "UInt", dwVersionFlag   ; DWORD
    , "Int")   ; return: BOOL

●DeletePrinterDriverExW(pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag) = DLL("winspool.drv", "bool DeletePrinterDriverExW(char*, char*, char*, dword, dword)")
# 呼び出し: DeletePrinterDriverExW(pName, pEnvironment, pDriverName, dwDeleteFlag, dwVersionFlag)
# pName : LPCWSTR optional -> "char*"
# pEnvironment : LPCWSTR optional -> "char*"
# pDriverName : LPCWSTR -> "char*"
# dwDeleteFlag : DWORD -> "dword"
# dwVersionFlag : DWORD -> "dword"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。