Function RegisterShellExtension

Src/PropShell.cpp:87–135

}

static bool RegisterShellExtension(bool unregister, bool peruser)
{
	tchar_t szSystem32[260] = { 0 };
	tchar_t szSysWow64[260] = { 0 };
	GetSystemDirectory(szSystem32, sizeof(szSystem32) / sizeof(szSystem32[0]));
	GetSystemWow64Directory(szSysWow64, sizeof(szSysWow64) / sizeof(szSysWow64[0]));

	String progpath = env::GetProgPath();
	String regsvr32 = paths::ConcatPath(szSystem32, _T("regsvr32.exe"));
	String args;
	String options = (unregister ? _T("/s /u") : _T("/s"));
	options += peruser ? _T(" /n /i:user") : _T("");
	SHELLEXECUTEINFO sei = { sizeof(sei) };
	if (!peruser)
		sei.lpVerb = _T("runas");
	if (szSysWow64[0])
	{
#if defined _M_ARM64
		args = options + _T(" \"") + paths::ConcatPath(progpath, _T("ShellExtensionARM64.dll")) + _T("\"");

		sei.lpFile = regsvr32.c_str();
		sei.lpParameters = args.c_str();
		return !!ShellExecuteEx(&sei);
#else
		args = options + _T(" \"") + paths::ConcatPath(progpath, _T("ShellExtensionX64.dll")) + _T("\"");

		sei.lpFile = regsvr32.c_str();
		sei.lpParameters = args.c_str();
		ShellExecuteEx(&sei);

		regsvr32 = paths::ConcatPath(szSysWow64, _T("regsvr32.exe"));
		args = options + _T(" \"") + paths::ConcatPath(progpath, _T("ShellExtensionU.dll")) + _T("\"");
		sei.lpFile = regsvr32.c_str();
		sei.lpParameters = args.c_str();
		return !!ShellExecuteEx(&sei);
#endif
	}
	else
	{
#if defined _M_ARM
		args = options + _T(" \"") + paths::ConcatPath(progpath, _T("ShellExtensionARM.dll")) + _T("\"");
#else
		args = options + _T(" \"") + paths::ConcatPath(progpath, _T("ShellExtensionU.dll")) + _T("\"");
#endif
		sei.lpFile = regsvr32.c_str();
		sei.lpParameters = args.c_str();
		return !!ShellExecuteEx(&sei);
	}
}

static bool RegisterWinMergeContextMenu(bool unregister)
{