Add support for WinTrust API

include/WinStd/WinTrust.h

@@ -0,0 +1,76 @@
+/*
+    Copyright 1991-2018 Amebis
+    Copyright 2016 G<>ANT
+
+    This file is part of WinStd.
+
+    Setup is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Setup is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Setup. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+///
+/// \defgroup WinTrustAPI WinTrust API
+/// Integrates WinStd classes with Microsoft WinTrust API
+///
+
+#include "Common.h"
+
+namespace winstd
+{
+    class WINSTD_API wintrust;
+}
+
+#pragma once
+
+#include <WinTrust.h>
+
+
+namespace winstd
+{
+    /// \addtogroup WinTrustAPI
+    /// @{
+
+    ///
+    /// WinTrust engine wrapper class
+    ///
+    class WINSTD_API wintrust
+    {
+    public:
+        ///
+        /// Initializes a new class instance.
+        ///
+        inline wintrust(_In_opt_ HWND hwnd, _In_ const GUID &action, _Inout_ WINTRUST_DATA &wtd) :
+            m_hwnd(hwnd),
+            m_action(action),
+            m_wtd(wtd)
+        {
+            LONG lResult = WinVerifyTrust(m_hwnd, &m_action, &m_wtd);
+            if (lResult != ERROR_SUCCESS)
+                throw win_runtime_error(lResult, "WinVerifyTrust failed.");
+        }
+
+        ///
+        /// Destroys the WinTrust context.
+        ///
+        virtual ~wintrust();
+
+    protected:
+        HWND          m_hwnd;
+        GUID          m_action;
+        WINTRUST_DATA &m_wtd;
+    };
+
+    /// @}
+}