Pitayus' vipolnit' vot takoy kod nizhe, no CoCreateInstnace vidaet neizvestniy hr i COMException vidaet ctho hr nezivestnie.
Chto ya delayu ne pravil'no?
Lyubie komentarii budu ochen' polezni. Spasibo.

//-----------------------------------------------------------
       using System;
       using System.Runtime.InteropServices;
       using System.Windows.Forms;
       using Microsoft.VisualStudio.OLE.Interop;

       [DllImport("OLE32.DLL", EntryPoint = "CoCreateInstance", CallingConvention = CallingConvention.StdCall)]
       public static extern uint CoCreateInstance(ref Guid ClassGuid, IntPtr pUnkOuter, CLSCTX dwClsContext, ref Guid InterfaceGuid, ref IntPtr Result);
       [DllImport("ole32.dll", ExactSpelling = true, EntryPoint = "CoInitializeEx", CallingConvention = CallingConvention.StdCall, SetLastError = false, PreserveSig = false)]
       internal static extern void CoInitializeEx(IntPtr pvReserved, uint dwCoInit);

       public static Guid CGID_ShellServiceObject = new Guid(0x000214D2, 0x0000, 0x0000, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
       public static Guid IID_IOleCommandTarget   = new Guid(0xB722BCCB, 0x4E68, 0x101B, 0xA2, 0xBC, 0x00, 0xAA, 0x00, 0x40, 0x47, 0x70);
       public const uint S_OK = 0x00000000;

       public enum COINIT
       {
       COINIT_MULTITHREADED = 0x0,
       COINIT_APARTMENTTHREADED = 0x2,
       COINIT_DISABLE_OLE1DDE = 0x4,
       COINIT_SPEED_OVER_MEMORY = 0x8
       }

       IntPtr Result = IntPtr.Zero;
       uint hr = S_OK;
       CoInitializeEx(IntPtr.Zero, (uint)COINIT.COINIT_APARTMENTTHREADED | (uint)COINIT.COINIT_DISABLE_OLE1DDE);

       hr = CoCreateInstance(ref CGID_ShellServiceObject, IntPtr.Zero, CLSCTX.CLSCTX_INPROC_HANDLER | CLSCTX.CLSCTX_INPROC_SERVER, ref IID_IOleCommandTarget, ref Result);
       if (hr == S_OK)
       {
           pCmdTarget = (IOleCommandTarget)(Marshal.GetObjectForIUnknown(Result));
           pCmdTarget.Exec(ref CGID_ShellServiceObject, 2, 0, IntPtr.Zero, IntPtr.Zero);
       }
       else
       {
           throw new COMException("Error creating instance", (int)hr);
       }

heh... navernoe nikto s COM ne hochet rabotat' v .NET :(

Во-первых, зачем такие сложности?
Почему не нравится обычный путь
Type.GetTypeFromCLSID(guid)
Activator.CreateInstance(type)

Во-вторых, что это за объект? Какой-то CLSID у него подозрительный...

> heh... navernoe nikto s COM ne hochet rabotat' v .NET :(

таким образом, как написано -- правда, никто не хочет.
;)

DiamondShark ©   (24.10.06 00:27) [2]

da vi pravi... sdelal oshibku.. v createinstance dolzhen bil bit' drugoy GUID.

eto Shell Service Object;
public Guid MyObject  = new Guid(0x35CEC8A3, 0x2BE6, 0x11D2, 0x87, 0x73, 0x92, 0xE2, 0x20, 0x52, 0x41, 0x53);

posledoval vashemu sovetu...
Type mytype = Type.GetTypeFromCLSID(MyObject);
pCmdTarget = (IOleCommandTarget)Activator.CreateInstance(mytype);
pCmdTarget.Exec(ref CGID_ShellServiceObject, 2, 0, IntPtr.Zero, IntPtr.Zero);

i vse rabotaet,.... URA....
budu ochen' blagodaren esli posovetuete gde mozheno prochitat' pro Activator (ne msdn, tam ya uzhe bill, opisanie tam konehcno horoshee, no vto kak ispol'zovat' primerov malo)