我有进程内 (DLL) COM 服务器,但我选择以 DllSurrogate 身份运行,因此从非托管代码 (Delphi) 中我有:
function TComWrapper.GetServer: IUnknown;
begin
OleCheck(CoCreateInstance(ServerData^.ClassId, nil, CLSCTX_LOCAL_SERVER, IUnknown, Result));
end;
现在正在使用 C#:
[DllImport("ole32.dll", EntryPoint = "CoCreateInstance", CallingConvention = CallingConvention.StdCall)]
static extern UInt32 CoCreateInstance([In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid,
IntPtr pUnkOuter, UInt32 dwClsContext, [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,
[MarshalAs(UnmanagedType.IUnknown)] out object rReturnedComObject);
...
UInt32 dwRes = CoCreateInstance(ClassIdGuid,
IntPtr.Zero,
(uint)(CLSCTX.CLSCTX_LOCAL_SERVER), //if OR with CLSCTX_INPROC_SERVER then INPROC Server will be created, because of DLL COM Server
IUnknownGuid,
out instance);
上面的代码是不安全的。
上面是否存在安全版本CoCreateInstance
?
看起来Activator.CreateInstance
对我没有帮助。我必须显式设置运行上下文(第三个参数)