67 lines
2.0 KiB
C#
67 lines
2.0 KiB
C#
/* This file is part of SevenZipSharp.
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SevenZipSharp is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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SevenZipSharp is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with SevenZipSharp. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Runtime.InteropServices;
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#if MONO
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using SevenZip.Mono.COM;
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#endif
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namespace SevenZip
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{
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#if UNMANAGED
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internal static class NativeMethods
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{
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#if !WINCE && !MONO
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#region Delegates
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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public delegate int CreateObjectDelegate(
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[In] ref Guid classID,
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[In] ref Guid interfaceID,
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[MarshalAs(UnmanagedType.Interface)] out object outObject);
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#endregion
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#endif
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#if WINCE
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[DllImport("7z.dll", EntryPoint="CreateObject")]
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public static extern int CreateCOMObject(
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[In] ref Guid classID,
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[In] ref Guid interfaceID,
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[MarshalAs(UnmanagedType.Interface)] out object outObject);
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#endif
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public static T SafeCast<T>(PropVariant var, T def)
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{
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object obj;
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try
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{
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obj = var.Object;
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}
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catch (Exception)
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{
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return def;
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}
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if (obj != null && obj is T)
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{
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return (T) obj;
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}
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return def;
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}
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}
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#endif
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} |