UninstallApplication

// ADVAPI32.dll
#include <windows.h>

DWORD UninstallApplication(
    LPWSTR ProductCode,
    DWORD dwStatus
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function UninstallApplication(
    <MarshalAs(UnmanagedType.LPWStr)> ProductCode As String,   ' LPWSTR
    dwStatus As UInteger   ' DWORD
) As UInteger
End Function

' ProductCode : LPWSTR
' dwStatus : DWORD
Declare PtrSafe Function UninstallApplication Lib "advapi32" ( _
    ByVal ProductCode As LongPtr, _
    ByVal dwStatus 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

UninstallApplication = ctypes.windll.advapi32.UninstallApplication
UninstallApplication.restype = wintypes.DWORD
UninstallApplication.argtypes = [
    wintypes.LPCWSTR,  # ProductCode : LPWSTR
    wintypes.DWORD,  # dwStatus : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
UninstallApplication = Fiddle::Function.new(
  lib['UninstallApplication'],
  [
    Fiddle::TYPE_VOIDP,  # ProductCode : LPWSTR
    -Fiddle::TYPE_INT,  # dwStatus : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn UninstallApplication(
        ProductCode: *mut u16,  // LPWSTR
        dwStatus: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint UninstallApplication([MarshalAs(UnmanagedType.LPWStr)] string ProductCode, uint dwStatus);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_UninstallApplication' -Namespace Win32 -PassThru
# $api::UninstallApplication(ProductCode, dwStatus)

#uselib "ADVAPI32.dll"
#func global UninstallApplication "UninstallApplication" sptr, sptr
; UninstallApplication ProductCode, dwStatus   ; 戻り値は stat
; ProductCode : LPWSTR -> "sptr"
; dwStatus : DWORD -> "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 "ADVAPI32.dll"
#cfunc global UninstallApplication "UninstallApplication" wstr, int
; res = UninstallApplication(ProductCode, dwStatus)
; ProductCode : LPWSTR -> "wstr"
; dwStatus : DWORD -> "int"

; DWORD UninstallApplication(LPWSTR ProductCode, DWORD dwStatus)
#uselib "ADVAPI32.dll"
#cfunc global UninstallApplication "UninstallApplication" wstr, int
; res = UninstallApplication(ProductCode, dwStatus)
; ProductCode : LPWSTR -> "wstr"
; dwStatus : DWORD -> "int"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procUninstallApplication = advapi32.NewProc("UninstallApplication")
)

// ProductCode (LPWSTR), dwStatus (DWORD)
r1, _, err := procUninstallApplication.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ProductCode))),
	uintptr(dwStatus),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function UninstallApplication(
  ProductCode: PWideChar;   // LPWSTR
  dwStatus: DWORD   // DWORD
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'UninstallApplication';

result := DllCall("ADVAPI32\UninstallApplication"
    , "WStr", ProductCode   ; LPWSTR
    , "UInt", dwStatus   ; DWORD
    , "UInt")   ; return: DWORD

●UninstallApplication(ProductCode, dwStatus) = DLL("ADVAPI32.dll", "dword UninstallApplication(char*, dword)")
# 呼び出し: UninstallApplication(ProductCode, dwStatus)
# ProductCode : LPWSTR -> "char*"
# dwStatus : 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)。