// Written in the D programming language. /** * The only purpose of this module is to do the static construction for * std.windows.registry, to eliminate cyclic construction errors. * * License:   $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0). * Authors:   Kenji Hara * Source:    $(PHOBOSSRC std/internal/windows/advapi32.d) */module std.internal.windows.advapi32; version (Windows): import core.sys.windows.winbase, core.sys.windows.winnt, core.sys.windows.winreg; pragma(lib, "advapi32.lib"); @property bool isWow64(){    // WOW64 is the x86 emulator that allows 32-bit Windows-based applications to run seamlessly on 64-bit Windows    // IsWow64Process Function - Minimum supported client - Windows Vista, Windows XP with SP2    static int result = -1; // <0 if uninitialized, >0 if yes, ==0 if no    if (result >= 0)        return result > 0;  // short path    // Will do this work once per thread to avoid importing std.concurrency    // or doing gnarly initonce work.    alias fptr_t = extern(Windows) BOOL function(HANDLE, PBOOL);    auto hKernel = GetModuleHandleA("kernel32");    auto IsWow64Process = cast(fptr_t) GetProcAddress(hKernel, "IsWow64Process");    BOOL bIsWow64;    result = IsWow64Process && IsWow64Process(GetCurrentProcess(), &bIsWow64) && bIsWow64;    return result > 0;} HMODULE hAdvapi32 = null;extern (Windows){    LONG function(        scope const HKEY hkey, scope const LPCWSTR lpSubKey,        scope const REGSAM samDesired, scope const DWORD reserved) pRegDeleteKeyExW;} void loadAdvapi32(){    if (!hAdvapi32)    {        hAdvapi32 = LoadLibraryA("Advapi32.dll");        if (!hAdvapi32)            throw new Exception(`LoadLibraryA("Advapi32.dll")`);         pRegDeleteKeyExW = cast(typeof(pRegDeleteKeyExW)) GetProcAddress(hAdvapi32 , "RegDeleteKeyExW");        if (!pRegDeleteKeyExW)            throw new Exception(`GetProcAddress(hAdvapi32 , "RegDeleteKeyExW")`);    }} // It will free Advapi32.dll, which may be loaded for RegDeleteKeyEx functionprivate void freeAdvapi32(){    if (hAdvapi32)    {        if (!FreeLibrary(hAdvapi32))            throw new Exception(`FreeLibrary("Advapi32.dll")`);        hAdvapi32 = null;         pRegDeleteKeyExW = null;    }} static ~this(){    freeAdvapi32();}